Term
what is the bottom number of a fraction called that tells how many parts the whole is being divided into? |
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Definition
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Term
| What is the top number of a fraction called that tells how many of the parts are being used |
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Definition
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Term
| numerator has larger number then denominator |
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Definition
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Term
| what is the whole number with a fraction known as |
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Definition
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Term
| how many steps are there to convert a decimal to a fraction |
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Definition
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Term
| what rule specifies a ratio of 1:2:4 for cement, sand, and aggregates for concrete mixes |
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Definition
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Term
| What is a number expressed as a fraction of 100? |
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Definition
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Term
| What property of a number is a value that, multiplied by itself, gives the original number? |
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Definition
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Term
| What is the standard metric unit of mass? |
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Definition
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Term
| What is the standard metric unit of length? |
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Definition
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Term
| What is the standard metric unit of volume? |
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Definition
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Term
| what is the boiling poin of water at sea level |
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Definition
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Term
| An architect’s scale is used to read all plans except for what? |
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Definition
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Term
| What do two straight lines that meet at a common point form? |
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Definition
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Term
| What is the point where two lines meet to form an angle called? |
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Definition
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Term
| What tool are angles measured with |
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Definition
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Term
| What type of angle measures between 0 and 90 degrees? |
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Definition
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Term
| A right angle measures how many degrees |
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Definition
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Term
| What type of angle measures between 90° and 180°? |
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Definition
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Term
| What is a four sided shape with all four angles being right angles? |
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Definition
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Term
| What is a special rectangle with four right angles and equal length parallel sides? |
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Definition
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Term
| What do the three angles of a triangle always add up to? |
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Definition
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Term
| What type of triangle has two sides of equal length? |
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Definition
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Term
| What type of triangle has three sides of different lengths? |
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Definition
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Term
| What measurement of a circle is the outside perimeter of the circle? |
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Definition
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Term
| What measurement of a circle is a line straight through the circle from one point on the outside to a point directly opposite on the outside? |
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Definition
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Term
| What measurent of a circle is the distance from the center of the circle to a fixed point on the outside of the circle? |
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Definition
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Term
| What is the measurement of the two-dimensional size of a surface |
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Definition
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Term
| What is the formula for finding the area of a rectangle? |
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Definition
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Term
| What is the formula for finding the area of a triangle? |
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Definition
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Term
| What is the formula for finding the volume of a rectangular shape? |
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Definition
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Term
| What is described as the pushing force behind electricity? |
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Definition
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Term
| Voltage is calculated by multiplying current and resistance. What is this formula known as? |
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Definition
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Term
| What is the actual movement of electrons through a conductor known as? (Pa |
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Definition
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Term
| What is defined as the opposition to current flow? ( |
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Definition
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Term
| What is the unit of measurement for resistance? ( |
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Definition
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Term
| What is the rate at which work is done called? ( |
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Definition
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Term
| What is current that flows only in one direction referred to as? |
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Definition
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Term
| What is used to change the direction or completely stop current flow by opening or closing a circuit? |
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Definition
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Term
| What is a variable resistor used to limit current flow? |
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Definition
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Term
| What are the smallest building blocks of matter called? |
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Definition
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Term
| What percentage of an atoms weight does the nucleus account for? |
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Definition
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Term
| When atoms combine and form molecules, electrons in the outermost shell are either transferred from one atom to another or shared between atoms in a process known as what? |
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Definition
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Term
| What are negatively charged particles called |
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Definition
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Term
| What are electrically charged atoms called |
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Definition
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Term
| What do not allow electricity to readily flow through them and have a very high resistance? |
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Definition
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Term
| Up to how many electrons can atoms contain in their valance ring? |
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Definition
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Term
| How many amperes could stop a human heart under the right circumstances? |
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Definition
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Term
| All electrical circuits are a combination of what three electrical properties |
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Definition
| voltage, current, resistance |
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Term
| What states that current is directly proportional to the voltage and inversely proportional to the resistance? |
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Definition
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Term
| What is the most common source of DC? |
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Definition
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Term
| A battery consists of three main components: positive electrode, negative electrode, and what else |
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Definition
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Term
| What type of batteries are also known as rechargeable batteries, storage batteries, or accumulators |
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Definition
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Term
| What is current flow direction referred to as? |
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Definition
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Term
| What type of power sources to not have a fixed polarity? |
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Definition
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Term
| What is used to display the voltage, current, or both at the same time in the form of waves, sinusoidal waves through a Cathode Ray Tube (CRT)? ( |
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Definition
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Term
| What is the maximum amount of voltage or current at the maximum positive or negative point on a sine wave called? |
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Definition
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Term
| What are the effective values for AC often called? |
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Definition
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Term
| What is the unit of measure for frequency? |
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Definition
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Term
| In the United States, power is generated with a frequency of what to be used in all household appliances? |
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Definition
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Term
| What are the most common means of producing either single-phase or poly-phase power? |
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Definition
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Term
| What principal do generators use to produce voltage and current? |
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Definition
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Term
| What type of electricity is widely used to power heavy equipment? |
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Definition
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Term
| To produce a voltage you need to have a conductor, magnetic field, and what else? ( |
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Definition
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Term
| What is the unit for inductance? |
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Definition
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Term
| What have the ability to store a charge and oppose changes in voltage? |
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Definition
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Term
| What is defined as the total opposition to the flow of AC in a circuit? |
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Definition
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Term
| What is the power used to do work plus the power stored during part of a cycle by inductance and capacitance and then returned to the power source? |
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Definition
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Term
| n an AC circuit what is the power actually used to do work? |
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Definition
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Term
| For an AC circuit what is the ratio of the true power to the apparent power in that circuit? |
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Definition
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Term
| What is defined as a sinusoidal component added to a sine wave, having a frequency that is a multiple of the fundamental frequency? |
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Definition
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Term
| What is defined as two or more units of resistance connected end to end to form only one path for current flow and an AC or a DC voltage source? ( |
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Definition
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Term
| What are numbers or letters written below and to the right of the original circuit function letter? |
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Definition
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Term
| What type of circuit is defined as having more than one current path connected to a common voltage source? |
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Definition
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Term
| What type of electrical circuit is defined as a circuit that contains more than one path of current flow and at least two resistors in series in one of the paths? |
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Definition
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Term
| What allow you to start or stop the flow of power to electrical equipment by physically opening or closing the circuit? |
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Definition
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Term
| . What provide the physical connection between the power source, overcurrent protection, switch, and the load and provide a return path back through the components so that current can flow back to its place of origin |
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Definition
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Term
| What are used in a parallel circuit where three or more conductors meet each other |
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Definition
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Term
| What term refers to the process of securing the ends of a line to prevent the strands from unraveling and the yarns from separating or fraying? ( |
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Definition
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Term
| What refers to the tension at which line will part when a load is applied? |
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Definition
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Term
| What property of a line is the load that can be applied without causing any kind of damage to the line? |
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Definition
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Term
| What property of a line is the ratio between the BS and the SWL? |
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Definition
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Term
| The safety factor of a line must never be less than what? |
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Definition
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Term
| What three parts does wire rope consist of? |
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Definition
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Term
| What percent of added strength does a wire strand core add to the wire rope? ( |
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Definition
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Term
| What is the tensile strength of mild-plow steel wire rope? |
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Definition
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Term
| what is the tensile strength of plow steel wire rope |
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Definition
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Term
| What is the tensile strength of improved-plow steel wire rope |
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Definition
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Term
| What can be used to put a temporary eye splice in wire rope? |
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Definition
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Term
| What can be used to put a temporary eye splice in wire rope? |
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Definition
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Term
| What are the three types of fiber line and wire rope slings commonly used for lifting a load? |
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Definition
| Endless, single leg, and bridle slings |
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Term
| Ropes should be replaced when what percent of the total numbers of wires in the rope are found to have nicks, cuts, or replaced? |
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Definition
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Term
| What instruction establishes uniform policy, guidance, and requirements for the life-cycle control of hazardous material acquired and used by the Navy? ( |
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Definition
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Term
| What has the DoD established to acquire, stow, and disseminate manufacturer’s data on hazardous material (HM)? |
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Definition
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Term
| What are the only approved labels to be used to identify hazardous material? |
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Definition
| DoD Hazardous Chemical Warning Labe |
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Term
| What determines the contents of the toolbox for Construction Electricians? |
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Definition
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Term
| What are by far the most common type of drill for household use? |
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Definition
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Term
| Fuse pullers will vary in length from 5 to how many inches? |
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Definition
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Term
| What do Electricians use to cut metal or plastic raceways |
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Definition
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Term
| What are the three types of hammers commonly used by the electrician? |
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Definition
| claw,sledge,and ball peen |
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Term
| What type of hammer is used for driving and pulling nails and staples? |
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Definition
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Term
| What type of hammers are used where more force is needed to accomplish the job |
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Definition
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Term
| What type of hammer is used to drive chisels and punches? |
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Definition
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Term
| What type of pliers can be described as heavy-duty scissors and are used to cut wire? |
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Definition
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Term
| What type of pliers can be used like extended fingers to reach into electrical boxes to retrieve wires or for bending loops on conductors? |
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Definition
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Term
| What is an electrical pipe used to protect electrical wires? |
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Definition
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Term
| What are cross-tip screwdrivers usually referred to as? |
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Definition
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Term
| What type of screwdrivers are used when the working space does not permit the use of a straight shank screwdriver? |
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Definition
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Term
| What are made to turn nuts and hold bolts? ( |
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Definition
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Term
| What wrench is specifically used by electricians engaged in the installation, maintenance and removal of Overhead distribution systems? |
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Definition
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Term
| What consists of listing all the steps required to construct a given project |
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Definition
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Term
| What is a tabulated statement of the material required for a given project? |
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Definition
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Term
| What type of estimates are precise statements of quantities of material, equipment, and manpower required to construct a given project? |
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Definition
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Term
| either the field or the shop, that contribute directly to the completion of the end product? |
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Definition
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Term
| What is the process of determining the amount and type of work to be performed and the quantities of material, equipment, and labor required? |
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Definition
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Term
| What type of labor includes labor required to support construction operations but which does not, in itself, produce an end product? |
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Definition
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Term
| What consist of a breakdown of a complete project in sufficient detail to provide a comprehensive description of the project? |
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Definition
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Term
| What is the process of determining requirements and devising and developing methods and a scheme of action for construction of a project? |
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Definition
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Term
| What is the process of determining when an action must be taken and when materials, equipment, and manpower will be required? |
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Definition
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Term
| How many major phases can a building project be broadly divided into? |
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Definition
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Term
| What type of drawings are developed to show the proposed building or facility in an attractive setting in its natural surroundings at the proposed site |
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Definition
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Term
| What is one of the most important symbols used at the beginning of a new job? |
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Definition
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Term
| Plywood panels and drywall sheets come in what standard size sheets? |
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Definition
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Term
| what measurement system states that dimensions are in meters and centimeters |
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Definition
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Term
| How many millimeters are there in an inch? |
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Definition
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Term
| What are reproduced copies of mechanical or other types of technical drawings? ( |
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Definition
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Term
| How many parts do blueprints contain? |
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Definition
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Term
| What furnish essential data about features, such as land contours, roads, utilities, trees, structures, site preparation and development, and significant physical features, on or near the construction site |
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Definition
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Term
| What type of plans include floor plans, exterior elevation plans, and door and window schedules? |
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Definition
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Term
| What type of plans show the support of the building or structure, including walls, columns, beams, foundation, roof, and deck slab? ( |
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Definition
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Term
| What type of plans include layouts and details for systems of plumbing, heating, ventilating, air conditioning, and refrigeration |
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Definition
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Term
| What type of drawing shows a three-dimensional picture in one drawing? |
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Definition
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Term
| Horizontal lines in an orthographic elevation are projected at what angles in an isometric drawing? |
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Definition
| 30 degrees and 60 degrees |
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Term
| What define and limit the materials and fabrication according to the intent of the engineer or designer |
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Definition
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Term
| What cover the characteristics of materials and supplies used jointly by the Navy and other government agencies? |
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Definition
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Term
| What is any drawing that furnishes the information required by the craftsmen to rough in equipment or erect a structure? |
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Definition
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Term
| What is any drawing that furnishes the information required by the craftsmen to rough in equipment or erect a structure? |
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Definition
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Term
| What shows the grades at fixed points throughout the area in order to show how the land slopes before construction is started and the finished grade after construction is completed |
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Definition
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Term
| What is a drawing that represents a view of the finished structure as you would see it from the front, back, left, or right? |
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Definition
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Term
| What type of drawings show some portion of the work prepared by the construction contractor, manufacturer, distributor, or supplier? |
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Definition
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Term
| What is a simple drawing that shows the relationship of major parts of a wiring circuit or system? |
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Definition
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Term
| What is a drawing that shows the electrical connections and functions of a specific circuit arrangement? |
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Definition
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Term
| How many parts is the lineman’s body belt made of? |
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Definition
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Term
| What is the most critical measurement of a body belt |
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Definition
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Term
| What material makes up most of the lineman’s body belt? |
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Definition
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Term
| Lineman’s safety straps must be inspected before each use and every how many months when they are stored for a period of time? |
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Definition
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Term
| What are used for ascending, descending and maintaining work positions on the pole? |
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Definition
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Term
| What is the shortest permitted length of a gaff as measured from the underside? |
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Definition
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Term
| What is the average lifetime of a climber (device) |
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Definition
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Term
| A properly sharpened and shaped gaff will cut into the pole and hold, within a distance of no more than how many inches? |
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Definition
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Term
| What is a hard spot or spots on a pole where a stem or a branch once existed? |
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Definition
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Term
| When ascending a pole, take short, comfortable steps that are approximately how many inches high? |
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Definition
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Term
| When descending a pole the last step to the ground will be approxmiately how many inches or less from the bottom of the pole to prevent gaffing yourself and/or injuring your knee? |
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Definition
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Term
| Personnel must stand at least how many feet away from any pole that has an individual working aloft? |
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Definition
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Term
| Personnel must stand at least how many feet away from any pole that has an individual working aloft? |
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Definition
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Term
| What are used when a single arm is not strong enough to support the conductor weight or there is an angle change in the overhead line |
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Definition
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Term
| What is the rigging tool of choice when you need to lift and position heavy equipment and support material to the top of a utility pole |
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Definition
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Term
| What is the simplest rigging tool used in the field |
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Definition
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Term
| and line as a general rule should be made of rope at least what size in diameter |
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Definition
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Term
| What must be used whenever the load exceeds the limits of a hand line? |
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Definition
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Term
| What are used to attach secondary ropes to main ropes at points other than at the rope ends or to attach the free end of a rope to its standing part or other object? |
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Definition
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Term
| What are the principal fasteners of rigging equipment? |
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Definition
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Term
| What is a section of rope turned back on itself called? |
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Definition
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Term
| What is used to tie together two ropes of the same diameter? |
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Definition
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Term
| What is commonly used to tie objects, such as crossarms and hand tools onto a hand line in order to raise or lower them on a pole? |
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Definition
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Term
| What is used to guide heavy objects, such as a distribution transformer, away from the pole and for lifting or moving heavy timbers? |
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Definition
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Term
| ground worker can tie the hitch for the electrician working on the pole by using what kinf of hitch |
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Definition
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Term
| What is the best known method for forming a bight that will not slip under tension and can be easily untied |
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Definition
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Term
| What will allow you to move up or down a pole for very short distances in order to reach your work? |
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Definition
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Term
| Rescue rope used for a pole top rescue must be at least ½ inch in diameter and twice the height of the highest crossarm on base plus how many feet? |
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Definition
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|
Term
| . How many booms do the majority of bucket trucks come equipped with? |
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Definition
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|
Term
| . What is the common vertical reach of aerial lift trucks |
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Definition
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Term
| What is the maximum load capacity of single person buckets? |
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Definition
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Term
| What is the maximum load capacity of two person buckets? |
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Definition
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Term
| What device takes power from the engine and transfers that energy to a hydraulic pump? |
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Definition
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Term
| What are used to level the truck prior to boom operation? |
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Definition
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Term
| What is a small boom used in conjunction with a winch for lifting transformers and other heavy equipment? |
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Definition
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Term
| Tire pressure on aerial lift trucks must be checked and recorded within the first how many duty days of the month? |
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Definition
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Term
| What should be used as a checklist to make daily inspections of the aerial lift truck? |
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Definition
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Term
| What are the two types of aerial lift rescues? |
|
Definition
| Bucket tilt and Victim Lift |
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Term
| What part of a line truck are used in setting poles, hanging transformers, and moving heavy equipment? |
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Definition
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Term
| What is the horizontal reach of the line truck when all three booms are extended? |
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Definition
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Term
| What is the normal working load capacity of bumper and bed winches? |
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Definition
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Term
| What is the winch you will most often use? |
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Definition
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Term
| What ensure clear communications between the truck operator and ground worker |
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Definition
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Term
| 16. How many different hand signals are used to control the boom on an line maintenance truck? |
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Definition
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Term
| . Navy policy accepts, without further testing and examination, a valid operator’s license issued by a state or jurisdiction as proof the applicant has achieved the proficiency level required to operate government vehicles up to how many pounds gross vehicle weight (GVW)? |
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Definition
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Term
| . What is the proper form for applying for an automotive or material-handling equipment (MHE) license? |
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Definition
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|
Term
| . What is the Physical Fitness Inquiry for Motor Vehicle Operators? |
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Definition
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Term
| Applicants for MHE licenses are operationally tested and scored as prescribed in what instruction? |
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Definition
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Term
| What is the license required for motor vehicles and material-handling equipment |
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Definition
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Term
| The OF-346 expires on the birth date of the operator and is valid for how many years |
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Definition
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Term
| What is the license required for construction equipment operation? |
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Definition
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Term
| The NAVFAC 11260/2 expires on the operators birth date and is valid for how many years? |
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Definition
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Term
| What is commonly known as the Hard Card and is a guide for operator’s maintenance? |
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Definition
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Term
| What form is issued to any operator who uses construction equipment and is used to indicate findings from prestart maintenance checks or to record malfunctions |
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Definition
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Term
| What is an operator’s official authorization to operate a vehicle whether it is driven by the requester or by a pool operator |
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Definition
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Term
| What form must every mishap involving a Navy motor vehicle or item of construction equipment be reported on? |
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Definition
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Term
| What form is used to provide any person involved in a mishap with a Navy vehicle with the name and organizational assignment of the Navy operator? |
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Definition
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Term
| The noise levels of generators sized from 5 kW to 200 kW range from how many decibels at 25 feet |
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Definition
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Term
| Single hearing protection is needed for noise less than how many dBa? |
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Definition
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Term
| Double hearing protection is needed for noise levels greater than how many dBa? |
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Definition
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Term
| Generators must not be closer than how many feet to a load because of noise, fire hazard, and air circulation? |
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Definition
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|
Term
| A generator set should not be operated while inclined more than how many degrees from level? |
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Definition
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Term
| The annual load factor of a well operated active base should be 50 percent or more with a power factor of what percent or higher? |
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Definition
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|
Term
| Practically all general-purpose lighting in the United States and at United States overseas bases is how many volts? |
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Definition
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|
Term
| What is the sum of the rated capacities of all electrical appliances, lamps, motors, and so on, connected to the wiring of the system? |
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Definition
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Term
| What is the ratio between the actual maximum demand and the connected load called? |
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Definition
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Term
| Shelters should have additional windows or doors installed in localities where the summer temperatures exceed what temperature at any time? |
|
Definition
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|
Term
| Exhaust piping inside a building has to be covered with insulation capable ofwithstanding a temperature of how many degrees? |
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Definition
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Term
| A ground rod must have a minimum diameter of 5/8 inches if solid or what size if it is pipe? |
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Definition
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|
Term
| A ground plate must have a minimum area of how many square feet and, where practical, be embedded below the permanent moisture level? |
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Definition
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|
Term
| The National Electrical Code© states that a single electrode consisting of a rod, pipe, or plate that does not have a resistance to ground of how many ohms or less will be augmented by additional electrodes? |
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Definition
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Term
| All electrical generators operating at how many volts or less must be solidly grounded |
|
Definition
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|
Term
| A ground rod has to have a minimum diameter of 5/8 inch if solid and ¾ inch if pipe, and it has to be driven to a minimum of how many feet? |
|
Definition
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Term
| Trenches should be deep enough to bury cables at least 18 inches (how many inches in traffic areas and under roadways) below the surface of the ground to prevent distrubance of the cable by frost or subsequent surface digging? |
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Definition
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|
Term
| . Watches should be avoided that exceed how many hours unless emergency conditions dictate their use? |
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Definition
|
|
Term
| . What is a complete daily record of the operating hours and conditions of the generator set? ( |
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Definition
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|
Term
| The engine on generator sets should not be cranked in excess of how many seconds at a time? ( |
|
Definition
|
|
Term
| How much time should the starter on generator sets have to cool between cranking? |
|
Definition
|
|
Term
| What is a ratio, percentage, relationship between watts (true power) of a load and the product of volts and amperes (apparent power) necessary to supply the load? |
|
Definition
|
|
Term
| Electrolytes must never exceed what temperature when being placed in dry charged cells? |
|
Definition
|
|
Term
| What is a routine charge given according to the battery nameplate data during the ordinary cycle of operation to restore the battery to its charged condition? |
|
Definition
|
|
Term
| What is a special extended normal charge that is given periodically to batteries as part of a maintenance routine? |
|
Definition
|
|
Term
| What is used when a battery must be recharged in the shortest possible time? |
|
Definition
|
|
Term
| What is the instrument used to measure the amount of active ingredients in the electrolyte of the battery? |
|
Definition
|
|
Term
| What is the ratio of the weight of the electrolyte to the weight of the same volume of pure water? |
|
Definition
|
|
Term
| What is a device used to compare the phase sequence of three-phase generators or motors? |
|
Definition
|
|
Term
| What breaks or interrupts the circuit anytime there is a short circuit or overload condition in the load cables? |
|
Definition
|
|
Term
| What includes buses and automatic overcurrent protective devices placed in a cabinet or cutout box and mounted in or against a wall or partition? |
|
Definition
|
|
Term
| What are the three major categories of maintenance? |
|
Definition
| depot,intermediate,and organizational |
|
|
Term
| Compressed air pressure shall not exceed what? |
|
Definition
|
|
Term
| What type of maintenance includes the hourly, daily, and weekly maintenance requirements recommended in the manufacturer’s literature? |
|
Definition
|
|
Term
| What type of maintenance includes the monthly, quarterly, semiannual, and annual maintenance checks recommended in the manufacturer’s literature? |
|
Definition
|
|
Term
| What engines are installed in both the TQG-A and TQG-B generators? |
|
Definition
|
|
Term
| What acts as a heat exchanger for the engine coolant and helps keep the engine cool? |
|
Definition
|
|
Term
| What measures the oil level in the engine drain pan? |
|
Definition
|
|
Term
| What regulates fuel amounts that enter the engine to maintain the desired engine speed? |
|
Definition
|
|
Term
| What includes all parts of an electrical system between the power source and the customer’s service entrance? |
|
Definition
| Power distribution system |
|
|
Term
| A minimum separation of how many feet must be maintained between contruction equipment and energized power circuits at all times? |
|
Definition
|
|
Term
| Hard hats must be rated to withstand at least what voltage and must never have metal devices attached to them? |
|
Definition
|
|
Term
| No individual is ever allowed to work alone near circuits or devices conducting electrical energy over how many volts? |
|
Definition
|
|
Term
| A minimum clearance of how many feet must be maintained between personnel and any live power circuit or device conducting between 600 and 20,000 Vac? |
|
Definition
|
|
Term
| What changes the transmission or generator voltage to a lower level, providing voltage sources for the distribution circuits supplying power to the customers? |
|
Definition
|
|
Term
| What is an electrical transformer used to carry electrical energy from a primary distribution circuit to a secondary distribution circuit? |
|
Definition
|
|
Term
| How many volts does most electrical equipment in the Navy use? |
|
Definition
|
|
Term
| How many general types of single-phase distribution transformers are in use today? |
|
Definition
|
|
Term
| Secondary circuits originate from the secondary windings of a distribution transformer and are how many Vac or less? |
|
Definition
|
|
Term
| What configuration is a three-phase, four-wire system and is the preferred system used by military services? |
|
Definition
|
|
Term
| The combined conductors used to provide an electrical connection between a secondary distribution circuit and a user’s facility is known as what? |
|
Definition
|
|
Term
| What is the most flexible type of primary system? |
|
Definition
|
|
Term
| . From an economy standpoint the network system is suitable only in heavy-load density areas where the load center units range from 1,000 to how many kVA? |
|
Definition
|
|
Term
| What is used to disconnect or close circuits that may be energized |
|
Definition
|
|
Term
| What three general classes are switches divided into? |
|
Definition
|
|
Term
| Manholes should not be located more than how many feet apart |
|
Definition
|
|
Term
| What should manhole covers always be made of? |
|
Definition
|
|
Term
| What are the most common type of underground ducts used today by the Navy? |
|
Definition
|
|
Term
| For underground ducts set in concrete there must be at least how many inches of concrete around each line of duct? |
|
Definition
|
|
Term
| Power cables must be installed at what minimum depth? |
|
Definition
|
|
Term
| Communication cables must be installed at what minimum depth? |
|
Definition
|
|
Term
| What is the speed that you can successfully pull a cable in a clear straight duct? |
|
Definition
|
|
Term
| It is mandatory that shop supervisors inspect all the shop’s protective equipment every how many months? |
|
Definition
|
|
Term
| How many classes does the ANSI/ASTM categorize rubber protective equipment into? |
|
Definition
|
|
Term
| How many classes does the ANSI/ASTM categorize rubber protective equipment into? |
|
Definition
|
|
Term
| Rubber gloves must be electrically tested upon receipt and every how many months thereafter if in use? |
|
Definition
|
|
Term
| In what year was the first combined impact-resisting and electrical insulating hat introduced? |
|
Definition
|
|
Term
| What is the insulating value of hard hats? |
|
Definition
|
|
Term
| In what lengths are switch sticks available in? |
|
Definition
|
|
Term
| How many feet in length are grip-alls available in? |
|
Definition
|
|
Term
| How often must supervisors inspect all hot line tools? |
|
Definition
|
|
Term
| How many feet should poles be located from a curb? |
|
Definition
|
|
Term
| What is the foundation of the pole line with the purpose of taking the strain of all the weight of the equipment installed on a pole line? |
|
Definition
|
|
Term
| . What is the most popular type of pole line anchor? |
|
Definition
|
|
Term
| What type of pole line anchors are commonly installed in soft soils? |
|
Definition
|
|
Term
| What is the distance from the line pole to the anchor called? |
|
Definition
|
|
Term
| Anchor rods vary in diameter from ½ to 1 ¼ inches and in what length? |
|
Definition
|
|
Term
| What is a brace or cable fastened to the pole to strengthen it and keep it in position? |
|
Definition
|
|
Term
| What are guys installed to protect facilities and limit damage if a conductor break occurs called? |
|
Definition
|
|
Term
| What type of guys must bent thimbles never be used on? |
|
Definition
|
|
Term
| What is a device that measures tension in foot pounds? |
|
Definition
|
|
Term
| What term means placing some firm material around the part of the pole below the ground? |
|
Definition
|
|
Term
| What is a wooden support made in the form of an X called? |
|
Definition
|
|
Term
| What is a wooden support in the form of a Y called? |
|
Definition
|
|
Term
| What is a specially treated wooden member secured to a pole and used to mount various types of circuit protection devices and support distribution conductors? |
|
Definition
|
|
Term
| . Buck arms are used at points where the line makes a change of between 31 to how many degrees or where conductors dead end? |
|
Definition
|
|
Term
| What is a material that prevents the flow of an electric current and can be used to support electrical conductors? |
|
Definition
|
|
Term
| The most common types of insulators found in the Navy are the pin, post, suspension, and what other type? |
|
Definition
|
|
Term
| What type of insulator is the most commonly used insulator on overhead distribution systems today? |
|
Definition
|
|
Term
| What type of insulators never support high voltage wires? |
|
Definition
|
|
Term
| What is a material that readily permits the flow of an electric current? |
|
Definition
|
|
Term
| . What is the most commonly used line conductor? |
|
Definition
|
|
Term
| Conductors come in what two classes? |
|
Definition
|
|
Term
| What are the two different numbering methods that conductor sizes are ordinarily expressed by? |
|
Definition
|
|
Term
| What are inexpensive protective devices put in the circuit to open the circuit when an overcurrent condition occurs |
|
Definition
|
|
Term
| Grounds are required at what intervals on a power distribution line and at every pole when equipment is installed? |
|
Definition
|
|
Term
| What should be used to test the windings of a transformer for faults? |
|
Definition
|
|
Term
| What is used to distribute the low voltage from the transformer to the customer? |
|
Definition
|
|
Term
| What type of service drops are mostly used for industrial and commercial areas? |
|
Definition
|
|
Term
| What is the maximum span length for a service drop |
|
Definition
|
|
Term
| Service drops not subject to vehicular traffic require a minimum clearance of how many feet? |
|
Definition
|
|
Term
| What are used to step up or step down voltage to a usable level for the customer? |
|
Definition
|
|
Term
| What is the first connection made to all transformers once they are in position? |
|
Definition
|
|
Term
| What is the normal amount of oxygen in the air? |
|
Definition
|
|
Term
| Blood starvation begins and will cause death within one to three minutes when the amount of oxygen is reduced to what percent or less? |
|
Definition
|
|
Term
| A manhole rescue requires two rescue ropes. Both should be at least ½ inch in diameter and as long as the depth of the manhole plus how many feet? |
|
Definition
|
|
Term
| Manhole sizes will not be less than 4 feet wide, 6 feet long, and how many feet deep? |
|
Definition
|
|
Term
| Manhole access openings to the surface must be at least how many inches in diameter |
|
Definition
|
|
Term
| What is the maximum distance between two manholes? |
|
Definition
|
|
Term
| What is used on utility poles to transition the cable from the ductwork to a surface device installed on the pole? |
|
Definition
|
|
Term
| What size ducts are normally used in Underground distribution systems? |
|
Definition
|
|
Term
| In order to accommodate future load growth, the established practice is to install at least what amount of extra duct work than what has been planned for use at the time of initial installation? |
|
Definition
|
|
Term
| The distance between ducts should be at least how many inches? |
|
Definition
|
|
Term
| Cables must be buried to what minimum depth for primary voltages of 22KV to 40KV? |
|
Definition
|
|
Term
| What is the preferred equipment with which to install a Direct burial system? |
|
Definition
|
|
Term
| Cable markers must be placed every how many feet or anywhere a cable changes direction? |
|
Definition
|
|
Term
| Direct buried cables emerging from the ground shall be protected by an enclosure or rigid conduit extending at least how many feet above the finished grade? |
|
Definition
|
|
Term
| As a general rule, the minimum bending radius of primary cable is how many times the overall diameter of the cable? |
|
Definition
|
|
Term
| What is the most important part of rigging? |
|
Definition
|
|
Term
| What term identifies an enclosure above or below ground which is used for the purpose of installing, operating or maintaining electrical distribution equipment or cables? |
|
Definition
|
|
Term
| What provides a means to stop the flow of electricity to the entire distribution system or just a portion of it? |
|
Definition
|
|
Term
| What OSHA safety color code identifies radiation hazards? |
|
Definition
|
|
Term
| What is a positive means to hold an energy-isolating device in a SAFE position in order to prevent the energizing of a machine or equipment? |
|
Definition
|
|
Term
| When using either ammeters or voltmeters what range should you always start at? |
|
Definition
|
|
Term
| What is defined as the luminous discharge due to ionization of the air in the vicinity of a conductor when the voltage gradient exceeds a certain critical value? |
|
Definition
|
|
Term
| Transmission line inspections by lineman walking the line are completed at how many year intervals in between climbing inspections? |
|
Definition
|
|
Term
| Vacuum reclosers require field testing every how many years by high potential testing of the vacuum interruptor bottles? |
|
Definition
|
|
Term
| At any Navy or advanced base, the electrical system consists of how many parts? |
|
Definition
|
|
Term
| What is the OSHA safety color code for fire protection equipment and apparatus? |
|
Definition
|
|
Term
3. What is the OSHA safety color code for caution and marking physical hazards? |
|
Definition
|
|
Term
| . What is the OSHA safety color code for dangerous parts of machines? |
|
Definition
|
|
Term
| What is the OSHA safety color code for radiation hazards? |
|
Definition
|
|
Term
| What is the OSHA safety color code for safety? |
|
Definition
|
|
Term
| What type of fires occur in wood, clothing, paper, or other such items? |
|
Definition
|
|
Term
| What is the symbol that identifies Class A fires? |
|
Definition
|
|
Term
| What type of fires occur with flammable liquids? |
|
Definition
|
|
Term
| What is the symbol used for Class B fires? |
|
Definition
|
|
Term
| What type of fires occur in electrical equipment and facilities? |
|
Definition
|
|
Term
| What symbol identifies Class C fires? |
|
Definition
|
|
Term
| What type of fires occur in combustible metals? |
|
Definition
|
|
Term
| What symbol identifies Class D fires? |
|
Definition
|
|
Term
| What is the governing policy for the US Navy to implement the lockout/tagout program? |
|
Definition
|
|
Term
What is a positive means to hold an energy-isolating device in a SAFE position in order
to prevent a machine or equipment from energizing? |
|
Definition
|
|
Term
What is a prominent warning device which can be securely fastened to an energy
isolating device? |
|
Definition
|
|
Term
Tag attachment, shall be of a non-reusable type, hand self-locking non-releasable with
strength of no less than how many pounds? |
|
Definition
|
|
Term
| Who must approve installation or maintenance of energized circuits? |
|
Definition
|
|
Term
| . What contains the requirements for installing electrical systems? |
|
Definition
| National Electrical Code® |
|
|
Term
The National Fire Protection Association (NFPA) prepares and publishes the National
Electrical Code® every how many years? |
|
Definition
|
|
Term
What term as defined by the NEC® means connected to the earth or to some other
conducting body that serves in place of the earth? |
|
Definition
|
|
Term
What reduces the voltage drop that results from overloading one side of the incoming
service and prevents the possibility of overloading the neutral? |
|
Definition
|
|
Term
| What is the starting point for interior wiring? |
|
Definition
|
|
Term
| 5. Generally speaking, how many categories are electrical loads divided into? |
|
Definition
|
|
Term
| What is the simplest type of wiring system? |
|
Definition
| Two-wire, single-phase type |
|
|
Term
| What is the most common system used in residences today? |
|
Definition
| 110 three-wire, 220 volts |
|
|
Term
The current edition of what publication contains the requirements for installing electrical
systems? |
|
Definition
| National Electrical Code ® |
|
|
Term
What is a threadable raceway of circular cross section designed for the physical
protection and routing of conductors and cables and for use as an equipment grounding
conductor when installed with its integral or associated coupling and appropriate fittings? |
|
Definition
|
|
Term
Armored Cable (Type AC) is a fabricated assembly of insulated conductors in a flexible
metallic enclosure. Underwriters Laboratories lists Type AC armored cables in sizes 14
AWG through 1 AWG copper and 12 AWG through 1 AWG aluminum or copper-clad
aluminum and rates it at how many volts or less? |
|
Definition
|
|
Term
| What is the wire size most frequently used for interior wiring? |
|
Definition
|
|
Term
| What is the allowable ampacity of Number 12 AWG? |
|
Definition
|
|
Term
What is an assembly of two or more conductors insulated from each other with an
additional insulating or protective shield formed or wound around the group of conductors? |
|
Definition
|
|
Term
Specific descriptive information must be marked on the exterior of nonmetallic cable,
repeating at intervals of at least every how many inches? |
|
Definition
|
|
Term
| At what height should wall switches be mounted when the height is not specified? |
|
Definition
|
|
Term
| At what height should receptacle outlets be mounted when the height is not specified? |
|
Definition
|
|
Term
What is the most common height for receptacle outlet boxes in the living areas of a house
from the floor line to the center of the box? |
|
Definition
|
|
Term
Switch boxes and outlet boxes for laundry and utility rooms and garages are normally set
how many feet above the floor? |
|
Definition
|
|
Term
Boxes for outlets over countertops are usually installed about how many inches above the
countertop? |
|
Definition
|
|
Term
There is no requirement for the protection of direct buried cables more than how many
inches below the finished grade? |
|
Definition
|
|
Term
Under floor raceways should be installed so that thare is at least what amount of concrete
or wood over the highest point of the ducts? |
|
Definition
|
|
Term
Insulator brackets should be mounted high enough so the power feeders are never
suspended lower than 18 feet over driveways and how many feet over walkways? |
|
Definition
|
|
Term
A lighting and appliance branch-circuit panelboard has more than what percent of its
overcurrent devices for which neutral connections are provided are rated 30 Amps or less? |
|
Definition
|
|
Term
Panelboards equipped with snap switches rated 30 amperes or less will have overcurrent
protection in excess of how many amperes? |
|
Definition
|
|
Term
The total load of any overcurrent device located in a panelboard will not exceed what
percent of its rating? |
|
Definition
|
|
Term
Cable must be anchored within 12 inches of a box, cabinet, or fitting and at points no
more than how many feet apart between boxes? |
|
Definition
|
|
Term
| What is the part of an electrical system that carries, but does not use electrical energy? |
|
Definition
|
|
Term
Remote control relays are capable of controlling 20 amperes of lighting or inductive loads
at how many volts of AC? |
|
Definition
|
|
Term
What method must be used to remove sharp edges or burrs on the inside of the conduit
pipe after cutting? |
|
Definition
|
|
Term
| What threading machine is the standard most Seabee units use for threading conduit? |
|
Definition
|
|
Term
| How many primary maintenance points are on the Ridgid Model 535® system? |
|
Definition
|
|
Term
What course covers bending and installation of electrical conduits using mechanical
benders? |
|
Definition
|
|
Term
Conduit sizes up to 1 inch rigid or what size EMT can be bent with manual benders
without much trouble? |
|
Definition
|
|
Term
What is used to avoid contacting a part of the structure or to bring the conduit out from
the structure to match a knockout in a box or panel? |
|
Definition
|
|
Term
The Greenlee™ 880 M2 Lightweight Hyrdraulic Bender is designed to make bends up to
90 degrees on rigid conduit from ½ inch to how many inches inclusive? |
|
Definition
|
|
Term
Conduit threaded in the field must be threaded with a die that has a taper of what size per
foot? |
|
Definition
|
|
Term
EMT and IMC require supports within 3 feet of each outlet box, junction box, cabinet, or
fitting, and every how many feet thereafter? |
|
Definition
|
|
Term
. Flexible metal conduit and liquid tight flex must be supported at intervals not exceeding
4.5 feet and within how many inches on each side of every outlet box or fitting? ( |
|
Definition
|
|
Term
When pulling wires remember to leave at least how many inches of free conductor at
each outlet and switch box to make up splices or connect devices? |
|
Definition
|
|
Term
| . The heavy-duty power wire/cable puller pulls how many feet of cable per minute? |
|
Definition
|
|
Term
What serves as a center or point in the electrical system where power is fed to the branch
circuits? |
|
Definition
|
|
Term
According to the NEC®, lighting and appliance panelboards cannot have more than how
many overcurrent devices besides the mains? |
|
Definition
|
|
Term
To prevent overheating of the conductor, the total load on any single overcurrent device
in a panelboard must not exceed 80 percent of its capacity where, in normal use, the load
continues for how many hours or longer? |
|
Definition
|
|
Term
| What are the two types of panelboards? |
|
Definition
|
|
Term
| Ferrule fuses are used in circuits up to how many volts? |
|
Definition
|
|
Term
What does the NEC® describe as areas where sparks generated by electrical equipment
may cause a fire or explosion? |
|
Definition
|
|
Term
| What is the meter component of a voltmeter? |
|
Definition
|
|
Term
| What is used to measure high-insulation resistance? |
|
Definition
|
|
Term
What condition occurs in a wiring system when one or more conductors in a circuit are
broken or otherwise separated? |
|
Definition
|
|
Term
What condition results when two bare conductors of different potential come into contact
with each other? |
|
Definition
|
|
Term
What is a condition in which the resistance of the defect in a system varies from time to
time? |
|
Definition
|
|
Term
What is probably the most commonly used electrical splice because of how simple it is to
make? |
|
Definition
|
|
Term
What is a type of splice that allows a connection to be made without cutting the main
line? ( |
|
Definition
|
|
Term
What is required to protect splices from oxidation and to insulate them against electrical
shock? |
|
Definition
|
|
Term
| What are the two principal types of fluorescent lamps? |
|
Definition
| Instant-start and Rapid-start |
|
|
Term
| What is the average hour life of mercury lamps? |
|
Definition
|
|
Term
Line voltage below the minimum range will extend lamp life but will reduce light output
approximately what percent for each one percent in voltage drop? |
|
Definition
|
|
Term
8. What are temporary elevated platforms called that are erected to support the crew
members, their tools, and materials as the working level of a structure rises above the reach
of crew members on the ground? |
|
Definition
|
|
Term
| What are the two types of scaffolding in use today? |
|
Definition
|
|
Term
| Light duty scaffolding can support how many pounds per square foot? |
|
Definition
|
|
Term
| Heavy duty scaffolding can support how many pounds per square foot |
|
Definition
|
|
Term
| What is the decrease in the amount of light reaching the end of the fiber called? |
|
Definition
|
|
Term
| In what year was a small area light-emitting diode (LED) developed by Bell Laboratories? |
|
Definition
|
|
Term
| What is the part of a system that connects a subscriber to the nearest switching center? |
|
Definition
|
|
Term
| What are the two basic types of optical fibers used in industry? |
|
Definition
| Multimode and single mode |
|
|
Term
| What three parts does the basic structure of an optical fiber consist of? ( |
|
Definition
| Core, cladding, and coating |
|
|
Term
| The types of fiber buffers include tight buffered, loose tube, and what else? |
|
Definition
|
|
Term
What are used in fiber-optic cables to increase the strength of the cable and protect the
fiber from strain? |
|
Definition
|
|
Term
| A fiber-optic data link consists of what three parts? |
|
Definition
| Transmitter, optical fiber, and receiver |
|
|
Term
What is a permanent fiber joint that establishes an optical connection between two
individual optical fibers? |
|
Definition
|
|
Term
| What are the two broad categories of fiber splicing techniques? |
|
Definition
|
|
Term
What is a device that permits the coupling of optical power between two optical fibers or
two groups of fibers? |
|
Definition
|
|
Term
| What are the two basic types of fiber-optic connectors? |
|
Definition
| Butt jointed and Expanded beam |
|
|
Term
What is a device that can distribute the optical signal (power) from one fiber among two
or more fibers or combine the optical signal from two or more fibers into a single fiber? |
|
Definition
|
|
Term
| What type of light do semicondonductor LEDs produce? |
|
Definition
|
|
Term
| What are the preferred optical source for multimode systems? |
|
Definition
|
|
Term
| Semiconductor lasers typically emit light spread out over an angle of how many degrees? |
|
Definition
|
|
Term
What are the two most common semiconductor materials used in electronic and electrooptic
devices? |
|
Definition
| Silicon (Si) and Gallium Arsenide (GaAs) |
|
|
Term
| What is the random generation of photons within the active layer of the LED? |
|
Definition
|
|
Term
What part of a fiber-optic transmitter accepts the incoming electrical signal and processes
it to make it compatible with the source drive circuit |
|
Definition
|
|
Term
| Fiber optic transmitter output interfaces generally fall into what two categories? |
|
Definition
| Optical connectors and Optical fiber pigtails |
|
|
Term
What is an electro-optic device that accepts optical signals from an optical fiber and
converts them into electrical signals? |
|
Definition
|
|
Term
| What is a device that converts input energy of one form into output energy of another |
|
Definition
|
|
Term
What term refers to the configuration of various types of equipment and the fiber optic
components interconnecting them? |
|
Definition
|
|
Term
| What measure the transmission properties of installed fiber optic components? |
|
Definition
|
|
Term
An optical time domain reflectometer (OTDR) is recommended for conducting field
measurements on installed optical fibers or links of how many meters or more in length? |
|
Definition
|
|
Term
What are epoxy resins that seal mechanical splices and provide index matching between
the connected fibers? |
|
Definition
|
|
Term
What process involves using localized heat to melt or fuse the ends of two optical fibers
together? |
|
Definition
|
|
Term
| What is the most common type of mechanical splice? |
|
Definition
|
|
Term
| Generally how many steps are there in intercom maintenance? ( |
|
Definition
|
|
Term
| What is the unit of luminous intensity? |
|
Definition
|
|
Term
What has the highest light producing efficiency of any commercial source of white light?
|
|
Definition
|
|
Term
2. How many major categories are ballasts classified into depending on the basic circuit
involved? |
|
Definition
|
|
Term
| What three major categories are streets classified into? |
|
Definition
| Major, collector, and local |
|
|
Term
What are the roadways that are used mainly for traffic movements within residential,
commercial, and industrial areas? |
|
Definition
|
|
Term
What type of luminaire is intended for narrow roadways with a width about equal to
lamp-mounting height? |
|
Definition
|
|
Term
type II luminaires are intended for roadways with a width of about how many times the
lamp-mounting height with the lamp located near one side? |
|
Definition
|
|
Term
| A luminaire overhang should not exceed what percent of the mounting height? |
|
Definition
|
|
Term
What is a measure of luminaire efficiency that shows the amount of light that falls on the
roadway and adjacent areas? |
|
Definition
|
|
Term
What must be applied to lighting calculations to compensate for the gradual loss of
illumination? |
|
Definition
|
|
Term
What is the typical maintenance factor applied to lighting calculations when the
manufacturer’s information is not available? |
|
Definition
|
|
Term
AIEE specifications require that constant current transformers deliver rated secondary
current at what percent overload? |
|
Definition
|
|
Term
How many classes has NEMA classified floodlighting luminaries into according to
construction? |
|
Definition
|
|
Term
Beam spread is based on the angle to either side of the aiming point where the
candlepower drops to what percent of its maximum value? ( |
|
Definition
|
|
Term
The suggested area that can be illuminated by a single pole is how many times the
mounting height? |
|
Definition
|
|
Term
| Pole costs increase substantially above how many feet? |
|
Definition
|
|
Term
| What gives the percentage of the initial lamp lumens that fall into the area being lighted? |
|
Definition
| Luminaire utilization data graph |
|
|
Term
What are the minimum average footcandles recommended for industrial yard/material
handling? |
|
Definition
|
|
Term
What instruction provides specifications on searchlights and minimum footcandle
requirements under given situations? |
|
Definition
|
|
Term
What requires that electrical equipment be tested under the supervision of qualified
electrical personnel? |
|
Definition
|
|
Term
| What are current meters that measure current in amperes called? |
|
Definition
|
|
Term
What amperage range should the scale be rotated to in order to take measurements of
unknown amounts of current? |
|
Definition
|
|
Term
| What is equal to voltage divided by amperage? |
|
Definition
|
|
Term
| . What is the most convenient portable instrument for measuring AC amperes? |
|
Definition
|
|
Term
| . Meggers that will supply a test potential of how many volts are common in the Navy? |
|
Definition
|
|
Term
| What means that the resistance is too high for the instrument to measure? |
|
Definition
|
|
Term
What type of motor is often used to operate such devices as small pumps, oil burners, and
washing machines? |
|
Definition
|
|
Term
What can be caused by a break in a wire in the winding or by the centrifugal switch not
closing properly when the motor is at a standstill? |
|
Definition
|
|
Term
| What type of motor is one that operates on either single-phase AC or DC power? |
|
Definition
|
|
Term
| What is the most common type of universal motor? |
|
Definition
|
|
Term
What motors have the highest horsepower-to-weight ratio of all the types of electric
motors? |
|
Definition
|
|
Term
| Construction of a three-phase motor consists of what three main parts? |
|
Definition
| Stator, rotor, and end bells |
|
|
Term
What type of motor is one in which the ends of each phase are joined together paralleling
the windings? |
|
Definition
| Wye-connected three-phase |
|
|
Term
| What term includes any switch or device normally used to start or stop a motor? |
|
Definition
|
|
Term
Conductors supplying two or more motors must have an ampacity equal to the sum of the
full-load current rating of all motors plus what percent of the highest rated motor in the
group? |
|
Definition
|
|
Term
A toggle switch or circuit breaker can serve as a controller, provided its ampere rating is
at least twice the full-load current rating of the motor and the motor rating is how many
horsepower or less? |
|
Definition
|
|
Term
Disconnects may be used as controllers on motors rated up to 3 horsepower at how many
volts? |
|
Definition
|
|
Term
| Magnetic starters are made to handle motors of what horsepower? |
|
Definition
|
|
Term
| Reduced-voltage starters are generally used for motors rated above what horsepower? |
|
Definition
|
|
Term
| Air pressure used for cleaning should not exceed what amount of nozzle pressure? |
|
Definition
|
|
Term
What should not be used to polish commutators because particles can lodge between the
segments and cause the cummutator circuits to short? |
|
Definition
|
|
Term
What is defined as the total thickness of contact material which may be worn away before
the contact of two associated surfaces becomes inadequate to carry rated current? |
|
Definition
|
|
Term
What is a wiring system extending beyond the final automatic overload protective
device? |
|
Definition
|
|
Term
| What are the most common protectors used as branch-circuit protective devices? |
|
Definition
| Fuses or Circuit breakers |
|
|
Term
When the length of the branch circuit wires is not greater than how many feet, the NEC®
rules allow the size of these wires to be such that they have an ampacity not less than one
third of the ampacity of the mains if they are protected against physical damage? |
|
Definition
|
|
Term
What is a device that starts and stops a motor by making and breakng the power current
flow to the motor windings? |
|
Definition
|
|
Term
For motor circuits of 600 volts or less, the controller manual disconnecting means must
be within sight and not more than how many feet away from the location of the motor
controller? |
|
Definition
|
|
Term
The NEC® rules allow a single switch to be the disconnecting means of a group of
motors under how many volts? |
|
Definition
|
|
Term
What refers to connecting the noncurrent-carrying metal parts of the wiring system or
equipment to ground? |
|
Definition
|
|
Term
31. Flexible metal conduit is permitted as an equipment grounding conductor under the
following conditions: the length of the flex does not exeed 6 feet, the connectors are fittings
listed for grounding, and the circuit conductors within are rated at how many amperes or
less? |
|
Definition
|
|
Term
| How many classes are control circuits divided into? |
|
Definition
|
|
Term
Class 1 control circuit systems may operate at any voltage that does not exceed how
many volts? |
|
Definition
|
|
Term
4. What instruction provides guidance on the lockout/tag out program at shore activities
according to OSHA regulations? |
|
Definition
|
|
Term
. Controls with voltage over how many volts should never be energized when you are
troubleshooting? |
|
Definition
|
|
Term
Under average conditions, the factory packed grease in the bearing housings of motors
that are not equipped with the pressure gun fitting and the relief plug on the bearing housing
lasts approximately how long? |
|
Definition
|
|
Term
| How often do most fractional-horsepower motors built today require lubrication? |
|
Definition
|
|
Term
Small fan and agitator motors often require lubrication with how-many month intervals
between oiling? |
|
Definition
|
|
Term
After new motors and controls are installed, check them for operation under load for an
initial period of at least how long? |
|
Definition
|
|
Term
| What are copies of mechanical or other types of technical drawings referred to as? |
|
Definition
|
|
Term
Which term means interpreting ideas expressed by others on drawings, whether or not the
drawings are actually blueprints? |
|
Definition
|
|
Term
Original drawings are drawn, or traced, directly on translucent tracing paper or cloth, using
black waterproof India ink, a pencil, or what other systems? |
|
Definition
| Computer Aided Drafting (CAD) |
|
|
Term
| Which type of patented paper produces prints with black lines on a white background? |
|
Definition
|
|
Term
Which process is used by businesses to incorporate reduced-size drawings into reports or
records? |
|
Definition
|
|
Term
The standards and procedures prescribed for military drawings and blueprints are stated in
military standards (MIL-STD) and which other standards? |
|
Definition
| American National Standards Institute (ANSI) |
|
|
Term
Which military standard specifies the size, format, location, and type of information that
should be included in military blueprints? |
|
Definition
|
|
Term
What is used by the draftsman to give the reader additional information about materials,
specifications, and so forth that are not shown in the blueprint or that may need additional
explanation? ( |
|
Definition
|
|
Term
| Where is the title block located on all blueprints and drawings prepared according to MILSTDs |
|
Definition
|
|
Term
| Where will the revision block be on a blueprint if a revision has been made? |
|
Definition
|
|
Term
Which numbers serve the same purpose as the numbers and letters printed on borders of
maps to help you locate a particular point or part? |
|
Definition
|
|
Term
2. Which block in the title block of the blueprint shows the size of the drawing compared
with the actual size of the part? |
|
Definition
|
|
Term
| Never measure a drawing; use what instead? |
|
Definition
|
|
Term
| What can a station on an aircraft be described as? |
|
Definition
|
|
Term
| Which block contains a list of the parts and/or material needed for the project? |
|
Definition
|
|
Term
Which block on a blueprint of a part or assembly identifies directly or by reference the
larger unit that contains the part or assembly on the drawing? |
|
Definition
|
|
Term
| What provides a better surface appearance and a better fit with closely mated parts? |
|
Definition
|
|
Term
What are placed on drawings to give additional information to clarify the object on the
blueprint? |
|
Definition
|
|
Term
What is a statement or document containing a description such as the terms of a contract
or details of an object or objects not shown on a blueprint or drawing? |
|
Definition
|
|
Term
What cover the characteristics of material and supplies used jointly by the Navy and other
government departments? |
|
Definition
|
|
Term
| What explains or defines a symbol or special mark placed on the blueprint? |
|
Definition
|
|
Term
| . What must you understand in order to read blueprints? |
|
Definition
|
|
Term
| What are blueprints usually called? |
|
Definition
|
|
Term
| Which type of plans are submitted with bids or other plans before a contract is awarded? |
|
Definition
|
|
Term
| Which type of plans illustrate mandatory design features of the ship? |
|
Definition
|
|
Term
| Which type of plans illustrate design features of the ship subject to development? |
|
Definition
|
|
Term
| Which type of plans illustrate arrangement or details of equipment, systems, or parts where specific requirements are mandatory? |
|
Definition
|
|
Term
| Which type of plans illustrate the general arrangement of equipment, systems, or parts that do not require strict compliance to details as long as the work gets the required results? |
|
Definition
|
|
Term
| Which type of plans does the contractor use to construct the ship? |
|
Definition
|
|
Term
| Which type of plans have been corrected to illustrate the final ship and system arrangement, fabrication, and installation? |
|
Definition
|
|
Term
| Which type of plans are considered necessary as reference materials in the operation of a ship |
|
Definition
|
|
Term
| rational 32. What lists all plans that apply to the ship except those for certain miscellaneous items covered by standard or type plans? |
|
Definition
|
|
Term
| In the current system, a complete plan number has five parts: Size, Federal supply code identification number, System command number in two parts, and what else? |
|
Definition
|
|
Term
| Which personnel file and maintain plans on most ships? |
|
Definition
|
|
Term
| It is best to place identifying marks at the top of prints when you file them vertically (upright), and at which location when you file them flat? |
|
Definition
|
|
Term
Pencil manufacturers market three types that are used to prepare engineering drawings;
graphite, plastic, and what else? |
|
Definition
|
|
Term
2. Which type of lead erases well, does not smear readily, and produces a good opaque line
suitable for microform reproduction? |
|
Definition
|
|
Term
Two types of pens are used to produce ink lines: the ruling pen with adjustable blade and
which other type of pen? |
|
Definition
|
|
Term
| Some of the most common drawing aids are protractors, triangles, and what else? |
|
Definition
|
|
Term
Which tool is used to measure or lay out angles other than those laid out with common
triangles? |
|
Definition
|
|
Term
Common triangles may be used to measure or lay out the angles they represent, or they
may be used in combination to form angles in multiples of what? |
|
Definition
|
|
Term
What is usually used to draw irregular curves with unlike circular areas where the
curvature is not constant? |
|
Definition
|
|
Term
| Which type of lines represent visible edges or contours of objects? |
|
Definition
|
|
Term
| Which type of lines consist of short, evenly-spaced dashes? |
|
Definition
|
|
Term
| Which type of lines consist of alternating long and short dashes? |
|
Definition
|
|
Term
| Which type of lines show the part of a drawing to which a note refers? |
|
Definition
|
|
Term
| Which type of lines show the part of a drawing to which a note refers? |
|
Definition
|
|
Term
Which type of lines shorten the view of long uniform sections or when you need only a
partial view? |
|
Definition
|
|
Term
| Which type of lines consist of long dashes separated by pairs of short dashes? |
|
Definition
|
|
Term
Which type of lines show alternate positions of related parts, adjacent positions of related
parts, and repeated detail? |
|
Definition
|
|
Term
Which type of lines show that a surface or surface zone is to receive additional treatment
or considerations within limits specified on a drawing? |
|
Definition
|
|
Term
Which type of plane curve generated by a point moving so that the sum of the distance
from any point on the curve to two fixed points, called foci, is a constant? |
|
Definition
|
|
Term
| What connects two parallel lines or planes of position? |
|
Definition
|
|
Term
What is the process of preparing engineering drawings on a computer known as and is the
most significant development to occur recently in this field |
|
Definition
| Computer-Aided Drafting (CAD) |
|
|
Term
| What do Drafter’s spend approximately two-thirds of their time doing? |
|
Definition
|
|
Term
What is used in conjunction with a CAD program that allows the draftsman to change
from command to command with ease? |
|
Definition
|
|
Term
What is mainly used to transfer an image or drawing from the computer screen to some
form of drawing media? |
|
Definition
|
|
Term
| Which computer output device duplicates the screen display quickly and conveniently? |
|
Definition
|
|
Term
| The two types of printers in common use are dot matrix and which other type? |
|
Definition
|
|
Term
What is the process by which machines are controlled by input media to produce
machined parts? |
|
Definition
|
|
Term
CAD is used to draw the part and to define the tool path, and what is used to convert the
tool path into codes that the computer on the machine can understand? ( |
|
Definition
|
|
Term
| What is a view of an object technically known as in blueprint reading? |
|
Definition
|
|
Term
. Projection is done, in theory, by extending lines of sight called what from the eye of the
observer through lines and points on the object to the plane of projection? |
|
Definition
|
|
Term
Which type of projection is a parallel projection in which the projectors are perpendicular
to the plane of projection? |
|
Definition
|
|
Term
Which type of projection is one in which the projectors are other than perpendicular to the
plane of projection? |
|
Definition
|
|
Term
Which type of projection is the most frequently used type of axonometric projection,
which is a method used to show an object in all three dimensions in a single view? |
|
Definition
|
|
Term
Which type of projection is a form of orthographic projection in which the projectors are
always perpendicular to the plane of projection? |
|
Definition
|
|
Term
| How many views do complex drawings normally have? |
|
Definition
|
|
Term
| How many views will most drawings usually be shown in? |
|
Definition
|
|
Term
Which type of drawing is the most used method of presentation used in technical
illustrations in the commercial and architectural fields? |
|
Definition
|
|
Term
| Which type of views are often necessary to show the true shape and length of inclined surfaces, or other features that are not parallel to the principal planes of projection? |
|
Definition
|
|
Term
Which type of views give a clearer view of the interior or hidden features of an object
that you normally cannot see clearly in other views? |
|
Definition
|
|
Term
In what type of section, the cutting plane changes direction backward and forward (zigzag)
to pass through features that are important to show? |
|
Definition
|
|
Term
Which type of section is used when an object is symmetrical in both outside and inside
details? |
|
Definition
|
|
Term
Which type of section is used to eliminate the need to draw extra views of rolled shapes,
ribs, and similar forms? |
|
Definition
|
|
Term
15. Which type of section is used to illustrate particular parts of an object? |
|
Definition
|
|
Term
Which type of view is used to show the relative location of parts, and it is particularly
helpful when you must assemble complex objects? |
|
Definition
|
|
Term
Which type of completed drawing will show in a direct and simple manner the shape,
exact size, type of material, finish for each part, tolerance, necessary shop operations, number
of parts required, and so forth? |
|
Definition
|
|
Term
| Engineers realize that absolute accuracy is impossible, so they figure how much variation is permissible. What is this allowance known as |
|
Definition
|
|
Term
| What are the maximum and/or minimum values prescribed for a specific dimension? |
|
Definition
|
|
Term
| What is a surface, line, or point from which a geometric position is to be determined or from which a distance is to be measured? |
|
Definition
|
|
Term
| . Any letter of the alphabet except for what may be used as a datum identifying symbol? |
|
Definition
|
|
Term
| What are concave metal corner (inside) surfaces? |
|
Definition
|
|
Term
| llets 6. What are used to mate two specially shaped pieces of material and securely hold them together, yet allow them to move or slide? |
|
Definition
|
|
Term
| What is a small wedge or rectangular piece of metal inserted in a slot or groove between a shaft and a hub to prevent slippage |
|
Definition
|
|
Term
| What is the curve formed on any cylinder by a straight line in a plane that is wrapped around the cylinder with a forward progression? |
|
Definition
|
|
Term
| What is the largest diameter of an external or internal thread |
|
Definition
|
|
Term
| What is the center line running lengthwise through a screw? |
|
Definition
|
|
Term
| What is the surface of the thread corresponding to the major diameter of an external thread and the minor diameter of an internal thread? |
|
Definition
|
|
Term
| What is the distance from the root of a thread to the crest, measured perpendicularly to the axis? |
|
Definition
|
|
Term
| What is the distance from a point on a screw thread to a corresponding point on the next thread, measured parallel to the axis? |
|
Definition
|
|
Term
| What is the distance a screw thread advances on one turn, measured parallel to the axis? |
|
Definition
|
|
Term
| There are three classifications of helical springs: compression, extension, and what else? |
|
Definition
|
|
Term
| The military standards for finish marks are set forth in what? |
|
Definition
|
|
Term
| Which type of drawings show the size and location of pipes, fittings, and valves? ( |
|
Definition
|
|
Term
| What are the two methods of projection used in pipe drawings |
|
Definition
| Orthographic and isometric |
|
|
Term
| What is used for all pipes bent in more than one plane, and for assembly and layout work? |
|
Definition
|
|
Term
| Permanent connections, whether made by welding or other processes such as gluing or soldering, should be shown on the drawing by what? |
|
Definition
|
|
Term
| If standard symbols for fittings like tees, elbows, crossings, and so forth are not shown on a drawing, they are represented by a what? |
|
Definition
|
|
Term
| Which military standard established the color code used to identify piping carrying hazardous fluids? |
|
Definition
|
|
Term
| Which color is painted on valve wheels and pipe lines to indicate flammable materials? |
|
Definition
|
|
Term
| Which color is painted on valve wheels and pipe lines to indicate toxic and poisonous materials? |
|
Definition
|
|
Term
| Which color is painted on valve wheels and pipe lines to indicate anesthetics and harmful materials? |
|
Definition
|
|
Term
| Which color is painted on valve wheels and pipe lines to indicate oxidizing materials? |
|
Definition
|
|
Term
| Which color is painted on valve wheels and pipe lines to indicate physically dangerous materials? |
|
Definition
|
|
Term
| Which color is painted on valve wheels and pipe lines to indicate fire protection materials? |
|
Definition
|
|
Term
| Which military standard are fluid lines in aircraft marked according to? |
|
Definition
|
|
Term
| Which marking identifies materials that are extremely hazardous to life or health? |
|
Definition
|
|
Term
| Which marking identifies anesthetics and harmful materials? |
|
Definition
|
|
Term
| Which marking identifies a line that carries material that is not dangerous in itself, but is asphyxiating in confined areas |
|
Definition
|
|
Term
| Which systems are used on aircraft and aboard ship to activate weapons, navigational equipment, and remote controls of numerous mechanical devices? |
|
Definition
|
|
Term
| Which lines carry fluid from the reservoir to the pumps? |
|
Definition
|
|
Term
| Which lines alternately carry pressure to, and return fluid from, an actuating unit? |
|
Definition
|
|
Term
| Which lines carry excess fluid overboard or into another receptacle? |
|
Definition
|
|
Term
| On tees, 45-degree Y-bends or laterals, and double-branch elbows, you always read the size of the largest opening of the run first, the opposite opening of the run second, and what last? ( |
|
Definition
|
|
Term
| Which type of wiring diagram is made up of pictorial sketches of the various parts of an item of equipment and the electrical connections between the parts? |
|
Definition
|
|
Term
| Which type of wiring diagram shows the outline of a ship or aircraft or other structure, and the location of equipment such as panels, connection boxes, and cable runs? |
|
Definition
|
|
Term
| Which type of diagram uses lines and graphic symbols to simplify complex circuits or systems? |
|
Definition
|
|
Term
| Which type of diagram uses graphic symbols to show how a circuit functions electrically? |
|
Definition
|
|
Term
| Which type of wiring diagram shows how each individual conductor is connected within the various connection boxes of an electrical circuit or system? |
|
Definition
|
|
Term
| . Which type of diagram are the major components of equipment or a system represented by squares, rectangles, or other geometric figures, and the normal order of progression of a signal or current flow is represented by lines? |
|
Definition
|
|
Term
| All similar units in the ship comprise a group, and each group is assigned a separate series of consecutive numbers beginning with what? |
|
Definition
|
|
Term
| 8. What embossed with the cable designations are used to identify all permanently installed shipboard electrical cables? |
|
Definition
|
|
Term
| Navy ships use two systems of cable marking; the old system on prior to ships built in what year, and the new system on those built since then? |
|
Definition
|
|
Term
| The new cable tag system consists of three parts in sequence; source, voltage, and what else, and where practical, destination? |
|
Definition
|
|
Term
| Neutral polarity, where it exists, is identified by the conductor of what color? |
|
Definition
|
|
Term
| What is the actual installation diagram for the deck or decks shown and is used chiefly in ship construction? |
|
Definition
|
|
Term
| Wiring deck plans are drawn to scale (usually ¼ inch to the foot), and they show the exact location of all fixtures. One blueprint usually shows from 150 to how many feet of space on one deck only? |
|
Definition
|
|
Term
| Which type of diagram for a particular piece of electrical equipment shows the relative position of the various components of the equipment and how each individual conductor is connected in the circuit? |
|
Definition
|
|
Term
| Which type of diagram describes the electrical operation of a particular piece of equipment, circuit, or system? |
|
Definition
|
|
Term
| What are similar to electrical prints, but they are usually more difficult to read because they represent more complex circuitry and systems? |
|
Definition
|
|
Term
| What system is an electronic air navigation system that provides a properly equipped aircraft with bearing and distance from a shipboard or ground radio beacon selected by the pilot? |
|
Definition
|
|
Term
| . Electronic schematic diagrams use graphic symbols from what for all parts, such as tubes, transistors, capacitors, and inductors? |
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Definition
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Term
| What is a combination of letters and numbers used to identify the various parts and components on electronic drawings, diagrams, parts lists, and so on? |
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Definition
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Term
| What is defined as two or more sets and other assemblies, subassemblies, and parts necessary to perform an operational function or functions? |
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Definition
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Term
| What is defined as one or more units and the necessary assemblies, subassemblies, and parts connected or associated together to perform an operational function? |
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Definition
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Term
| Individual conductors connecting to terminal boards are tagged with a vinyl sleeving called what that shows the terminal board and terminal to which the outer end of the conductor is connected? |
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Definition
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Term
| Aircraft electronic wiring diagrams fall into two basic classes: chassis wiring diagrams and which other type of diagrams? |
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Definition
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Term
| Which type of devices such as synchros, gyros, accelerometers, autotune systems, an analog computing elements are quite common in avionics systems? |
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Definition
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Term
| Which type of diagrams are used in the operation and maintenance of digital computers? |
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Definition
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Term
| What are the symbolic logic operations used in digital computers that are based on the investigations of George Boole and the resulting algebraic system called? |
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Definition
|
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Term
| What are the three basic operations used by Boolean algebra? |
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Definition
|
|
Term
| . Which type of diagrams show all logic functions of the equipment concerned? |
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Definition
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Term
| Which type of drawings are generally considered to be the drawings of steel, wood, concrete, and other materials used to construct buildings, ships, planes, bridges, towers, tanks, and so on? |
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Definition
| Architectural and structural |
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Term
| . What is identified by its nominal depth, in inches and weight per foot of length? |
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Definition
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Term
| What are principally used in locations where a single flat face without outstanding flanges on a side is required |
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Definition
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Term
| What are identified by the dimensions in inches of their legs? |
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Definition
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Term
| What is the same as a wide-flange or H-beam, but is much heavier per linear foot? |
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Definition
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Term
| What shapes are noted by depth, flange width, and weight per linear foot? |
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Definition
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Term
| What are noted by width, thickness, and length? |
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Definition
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Term
| What shape is a plate with a width less than 6 inches and a thickness greater than 3/16 inch? |
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Definition
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Term
| What are tie rods and pipe columns designated by? |
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Definition
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Term
| What are the main parts of a structure that are load-bearing which support and transfer the loads on the structure while remaining in equilibrium with each other? |
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Definition
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Term
| Which type of load is the total weight of the structure, which gradually increases as the structure rises and remains constant once it is completed? |
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Definition
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Term
| What is the ability of the earth to support a load called? |
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Definition
|
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Term
| What are high-strength vertical structural members? |
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Definition
|
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Term
| What might be called a short column in building construction? |
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Definition
|
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Term
| What are the chief vertical structural members in light-frame construction called? |
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Definition
|
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Term
| What are the enlarged studs called located at the building corners? |
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Definition
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Term
| In technical terminology, what is a horizontal load-bearing structural member that spans a space and is supported at both ends called |
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Definition
|
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Term
| Horizontal structural members that support the ends of floor beams or joists in woodframe construction are called sills, girts, or what else? |
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Definition
|
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Term
| Horizontal members that support studs are called sills or what else? |
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Definition
|
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Term
| Horizontal members that support the wall ends of rafters are called rafter plates or what else, depending on the type of framing? |
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Definition
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Term
| What is a framework consisting of two horizontal (or nearly horizontal) members joined together by a number of vertical and/or inclined members to form a series of triangles? |
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Definition
|
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Term
| What provide the necessary information on the location, alignment, and elevation of the structure and its principal parts in relation to the ground at the site? |
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Definition
|
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Term
| What contain information on the size, material, and makeup of all main members of the structure, their relative position and method of connection, as well as the attachment of other parts of the structure |
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Definition
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Term
| Which drawings contain necessary information on the size, shape, material, and provisions for connections and attachments for each member? |
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Definition
|
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Term
| What show the location and position of the various members in the finished structure? |
|
Definition
| Erection drawings/diagrams |
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Term
| Which term refers to temporary supports of timber or steel that sometimes are required in the erection of difficult or important structures? |
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Definition
|
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Term
| Most construction drawings consist of what views? |
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Definition
|
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Term
| What is a view of an object or area as it would appear if projected onto a horizontal plane passed through or held above the object area? |
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Definition
|
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Term
| What shows the contours, boundaries, roads, utilities, trees, structures, and other significant physical features about structures on their sites? |
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Definition
|
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Term
| Which type of plans show the dimension numbers and arrangement of structural members in wood-frame construction? |
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Definition
|
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Term
| What show the front, rear, and sides of a structure projected on vertical planes parallel to the planes of the sides |
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Definition
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Term
| Which type off drawings are on a larger scale than general drawings, and they show features not appearing at all, or appearing on too small a scale, in general drawings? |
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Definition
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Term
| What serves to open up an object that has been rolled, folded, or a combination of both, and makes that object appear to be spread out on a plane or flat surface? |
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Definition
|
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Term
| Sheet metal layout drawings are based on three types of development: parallel, radial, and what else? |
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Definition
|
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Term
| What are used to join edges? |
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Definition
|
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Term
| Seams may be fastened together by lock seams, solder, rivets, adhesive, or what else? |
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Definition
|
|
Term
| Which type of seam is used to construct cylindrical objects? |
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Definition
|
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Term
| What compresses the metal on the inside of the bend and stretches the metal on its outside? |
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Definition
|
|
Term
| What is the line at which the metal starts to bend? |
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Definition
|
|
Term
| What is the amount of metal used to make the bend |
|
Definition
|
|
Term
| . What is the distance from the bend tangent line to the mold point? |
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Definition
|
|
Term
| . Metal thicknesses up to what are usually designated by a series of gauge numbers? |
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Definition
|
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Term
| What is a surface said to be if a thin sheet of flexible material, such as paper, can be wrapped smoothly about its surface? |
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Definition
|
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Term
| Which term refers to the development of an object that has surfaces on a flat plane of projection? |
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Definition
|
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Term
| In what development, the slanting lines of pyramids and cones do not always appear in their true lengths in an orthographic view? |
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Definition
|
|
Term
| Which type of pyramid has all its lateral edges of unequal length? |
|
Definition
|
|
Term
| The development of which property of a cone is the development of a full cone less the development of the part removed? |
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Definition
|
|
Term
| An oblique cone is generally developed by what method? |
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Definition
|
|
Term
| What pieces are usually made to connect two different forms? |
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Definition
|
|
Term
| What is any device called in which an electrical current flows and which changes this electrical energy into a more useful form? |
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Definition
|
|
Term
| Which device furnishes the electrical energy used by the load? |
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Definition
|
|
Term
| What permits control of the electrical device and interrupts the current delivered to the load? |
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Definition
|
|
Term
| What is the technician’s main aid in troubleshooting a circuit in a piece of equipment? |
|
Definition
|
|
Term
| Who proved by an experiment that a precise relationship exists between current, voltage, and resistance? |
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Definition
|
|
Term
| What is current inversely proportional to? |
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Definition
|
|
Term
| What is a basic tool used to solve electrical problems? |
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Definition
|
|
Term
| What can be constructed to easily analyze a circuit? |
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Definition
|
|
Term
| Which axis on a graph is known as the X-AXIS? |
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Definition
|
|
Term
| What is the rate at which work is being done referred to as? |
|
Definition
|
|
Term
| What unit is electric power rate measured in? |
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Definition
|
|
Term
| What is the basic unit of power? |
|
Definition
|
|
Term
| What indicates the rate at which devices convert electrical energy into another form of energy? |
|
Definition
|
|
Term
| In most circuits, the actual power used by a resistor is considerably less than the power rating of the resistor because a safety factor of what percent is used? |
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Definition
|
|
Term
| When resistors with wattage ratings greater than how many watts are needed, wirewound resistors are used? |
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Definition
|
|
Term
| Wirewound resistors are made in values between 5 and how many watts? |
|
Definition
|
|
Term
| Which electrical device property is the ratio of power converted to useful energy divided by the power consumed by the device? |
|
Definition
|
|
Term
| How many watts are required to equal one horsepower? |
|
Definition
|
|
Term
| What is a complete conducting pathway called? |
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Definition
|
|
Term
| Which type of circuit contains only one path for current flow? |
|
Definition
|
|
Term
| Each of the resistors in a series circuit consumes power which is dissipated in the form of what? |
|
Definition
|
|
Term
| The total resistance of a series circuit is equal to the sum of the what? |
|
Definition
|
|
Term
| Which resistor value is the voltage drop across a resistor in a series circuit proportional to? |
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Definition
|
|
Term
| What year did G. R. Kirchhoff extend the use of Ohm’s law by developing a simple concept concerning the voltages contained in a series circuit loop? |
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Definition
|
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Term
| Which law states that "The algebraic sum of the voltage drops in any closed path in a circuit and the electromotive forces in that path is equal to zero."? |
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Definition
|
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Term
| What are emf sources that would tend to force current in opposite directions said to be? |
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Definition
|
|
Term
| What is an arbitrarily chosen point to which all other points in the circuit are compared? |
|
Definition
|
|
Term
| Which term is used to denote a common electrical point of zero potential? |
|
Definition
|
|
Term
| What is the common ground for the many electrical circuits in most electrical equipment? |
|
Definition
|
|
Term
| What is a circuit said to be when a break exists in a complete conducting pathway? |
|
Definition
|
|
Term
| Which term represents a quantity so large it cannot be measured? |
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Definition
|
|
Term
| What is an accidental path of low resistance which passes an abnormally high amount of current called? |
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Definition
|
|
Term
| All sources of electromotive force have some form of internal resistance which causes a drop in what as current flows through the source? |
|
Definition
|
|
Term
| Which type of circuit has more than one current path connected to a common voltage source? |
|
Definition
|
|
Term
| How many resistances at a minimum must parallel circuits contain which are not connected in series? |
|
Definition
|
|
Term
| What is the total resistance of resistors in parallel also referred to as? |
|
Definition
|
|
Term
| The equivalent resistance of a parallel circuit is always less than the resistance of any what? |
|
Definition
|
|
Term
| Any complex circuit consisting of resistances can be redrawn (reduced) to a basic equivalent circuit containing the voltage source and a single resistor representing total resistance. This process is called reduction to a what? |
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Definition
|
|
Term
| Which type of circuits consist of both series and parallel elements? |
|
Definition
|
|
Term
| What are the points where the current divides called? |
|
Definition
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|
Term
| What are installed in equipment circuits to prevent damage caused by increases in current? |
|
Definition
|
|
Term
| Approximately what percent of the load current should the current in a voltage divider resistor equal? |
|
Definition
|
|
Term
| Which type of current does not flow through any of the load devices? |
|
Definition
|
|
Term
| The resistance of the human body cannot be relied upon to prevent a fatal shock from how many volts or less? |
|
Definition
|
|
Term
| Fatalities from voltages as low as how many volts have been recorded? |
|
Definition
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|
Term
| Tests have shown that body resistance under unfavorable conditions may be as low as 300 ohms, and possibly as low as how many ohms from temple to temple if the skin is broken? |
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Definition
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|
Term
| What is used to fight electrical fires because it is nonconductive and the safest to use in terms of electrical safety? |
|
Definition
|
|
Term
| What is the process by which a person who has stopped breathing can be saved called? |
|
Definition
|
|
Term
| . Records show that seven out of ten victims of electric shock were revived when artificial respiration was started in less than how many minutes? |
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Definition
|
|
Term
| Which technique has been developed to provide aid to a person who has stopped breathing and suffered a cardiac arrest? |
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Definition
|
|
Term
| Which device transfers electrical energy from one circuit to another by electromagnetic induction |
|
Definition
|
|
Term
| Most power transformers are of what type? |
|
Definition
|
|
Term
| Generally, air-core transformers are used when the voltage source has a high frequency (above what)? |
|
Definition
|
|
Term
| . What is the most popular and efficient type of transformer core? |
|
Definition
|
|
Term
| What is said to exist when a voltage is applied to the primary, but no load is connected to the secondary? |
|
Definition
|
|
Term
| What is established around the winding when an alternating current flows through a primary winding? |
|
Definition
|
|
Term
| Which type of transformers are those in which the secondary voltage is in phase with the primary? |
|
Definition
|
|
Term
| What are lines of flux generated by one winding which do not link with the other winding called |
|
Definition
|
|
Term
| What is a transformer in which the voltage across the secondary is less than the voltage across the primary called |
|
Definition
|
|
Term
| What is defined as the magnetomotive force developed by one ampere of current flowing in a coil of one turn? |
|
Definition
|
|
Term
| What indicates the amount by which the transformer increases or decreases the voltage applied to the primary? |
|
Definition
|
|
Term
| Small power transformers used in electrical equipment have an 80 to 90 percent efficiency range, while large, commercial powerline transformers may have efficiencies exceeding what percent? |
|
Definition
|
|
Term
| The total power loss in a transformer is a combination of how many types of losses? |
|
Definition
|
|
Term
| Which type of low-resistance wire are the primary and secondary windings of a transformer usually made of? |
|
Definition
|
|
Term
| What is done to transformer cores to minimize the loss resulting from eddy currents? |
|
Definition
|
|
Term
| Power transformers normally operate from either 60 Hz, or what alternating current? |
|
Definition
|
|
Term
| The power handling capacity of a transformer is measured in either the volt-ampere unit or what other unit? |
|
Definition
|
|
Term
| What are used to supply voltages to the various circuits in electrical equipment? |
|
Definition
|
|
Term
| Radio-frequency (RF) transformers are used to couple circuits to which frequencies above what are applied? |
|
Definition
|
|
Term
| The resistance of the human body cannot be relied upon to prevent a fatal shock from a voltage as low as how many volts or even less? |
|
Definition
|
|
Term
| Tests have shown that body resistance under unfavorable conditions may be as low as 300 ohms, and possibly as low as how many ohms (from temple to temple) if the skin is broken? |
|
Definition
|
|
Term
| Direct shorts, excessive current, along with what else are the conditions that require circuit protection |
|
Definition
|
|
Term
| Which term is used to describe a situation in which some point in the circuit, where full system voltage is present, comes in direct contact with the ground or return side of the circuit |
|
Definition
|
|
Term
| Which devices are used to stop current flow or open circuits? |
|
Definition
|
|
Term
| What is the simplest type of circuit protection device? |
|
Definition
|
|
Term
| What year was the first compact, workable circuit breaker developed? |
|
Definition
|
|
Term
| What year was the first circuit breaker placed on the market? |
|
Definition
|
|
Term
| Plug-type along with what else are the basic two types of fuses? |
|
Definition
|
|
Term
| Which type of fuse is constructed so that it can be screwed into a socket mounted on a control panel or electrical distribution center? |
|
Definition
|
|
Term
| The operating range of a plug-type fuse is usually up to 150 volts and from 0.5 ampere to how many amperes? |
|
Definition
|
|
Term
| Cartridge fuses can be rated at voltages up to 10,000 volts and have current ratings of from 1/500 (.002) ampere to how many amperes? |
|
Definition
|
|
Term
| Cartridge fuses may be used to protect against excessive heat and open at temperatures of from 165° F to what? |
|
Definition
|
|
Term
| If you wish to protect the circuit from overloads (excessive current), select a fuse rated at what percent of the normal circuit current? |
|
Definition
|
|
Term
| If you wish to protect against direct shorts only, select a fuse rated at what percent of the normal circuit current? |
|
Definition
|
|
Term
| Which fuse property indicates the ability to quickly extinguish the arc after the fuse element melts and the maximum voltage the open fuse will block? |
|
Definition
|
|
Term
| Delay, Standard, along with what else are the three fuse time delay ratings? |
|
Definition
|
|
Term
| Which type of fuse will allow temporary increases in current (surge) without opening? |
|
Definition
|
|
Term
| Which type of fuse can be used in any circuit where surge currents are not expected and a very fast opening of the fuse is not needed? |
|
Definition
|
|
Term
| Which type of fuses are used to protect devices that are very sensitive to increased current? |
|
Definition
|
|
Term
| Which device is wired into the circuit that allows easy fuse replacement? |
|
Definition
|
|
Term
| What type of fuses is the clip-type fuseholder used for? |
|
Definition
|
|
Term
| Which device when used properly is the only sure way of knowing whether or not a fuse is open? |
|
Definition
|
|
Term
| What is a circuit protection device that, like a fuse, will stop current in the circuit if there is a direct short, excessive current, or excessive heat? |
|
Definition
|
|
Term
| How many main components do circuit breakers have? |
|
Definition
|
|
Term
| Which main component of a circuit breaker provides an insulated housing and is used to mount the circuit breaker components? |
|
Definition
|
|
Term
| Which main component of a circuit breaker provides a means of opening and closing the breaker contacts (turning, the circuit ON and OFF)? |
|
Definition
|
|
Term
| Which main component of a circuit breaker confines, divides, and extinguishes the arc drawn between contacts each time the circuit breaker interrupts current? |
|
Definition
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|
Term
| What connect the circuit breaker to the power source and the load? |
|
Definition
|
|
Term
| Which part of the circuit breaker senses the overload condition and causes the circuit breaker to trip or break the circuit? |
|
Definition
|
|
Term
| Which type of circuit breaker is a circuit breaker that will trip (open) even if the operating mechanism (ON-OFF switch) is held in the ON position? |
|
Definition
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|
Term
| Which type of circuit breakers are used for circuits that are essential for operations? |
|
Definition
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|
Term
| Circuit breakers, like fuses, are rated by the amount of what? |
|
Definition
|
|
Term
| What is used to cause the circuit breaker closest to the faulty circuit to trip? |
|
Definition
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|
Term
| Practical uses of electricity were not recognized until late into what century? |
|
Definition
|
|
Term
| What is the application and removal of power in its simplest form? |
|
Definition
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|
Term
| Most circuit control devices are either switches, solenoids, or what else? |
|
Definition
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|
Term
| Over how many switches might a typical aircraft have to control lights, electronic systems, and to indicate whether the landing gear is up or down? |
|
Definition
|
|
Term
| Which type of switch is controlled by a person? |
|
Definition
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|
Term
| Which type of switch is controlled by a mechanical or electrical device? |
|
Definition
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|
Term
| Multicontact switches are usually classified by the number of poles and number of what? |
|
Definition
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|
Term
| Which type of switch is a midcontact switch part of the schematic with the contacts arranged in a full or partial circle? |
|
Definition
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|
Term
| Which term means that the switch will only remain in the momentary position as long as the actuator is held in that position? |
|
Definition
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|
Term
| Which type of switch is a switch in which the movement of the switch mechanism (contacts) is relatively independent of the activating mechanism movement? |
|
Definition
|
|
Term
| . What is the accurate snap-acting switch commonly called? |
|
Definition
|
|
Term
| Which switch property refers to the maximum current the switch is designed to carry? |
|
Definition
|
|
Term
| Which switch property refers to the maximum voltage allowable in the circuit in which the switch is used? |
|
Definition
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|
Term
| How many or more times without failure are most switches designed to operate if the voltage and current ratings are not exceeded? |
|
Definition
|
|
Term
| What is a control device that uses electromagnetism to convert electrical energy into mechanical motion? |
|
Definition
|
|
Term
| What is produced from current flowing through a conductor? |
|
Definition
|
|
Term
| What is the first step for troubleshooting a solenoid? |
|
Definition
|
|
Term
| What are electrically operated control switches? |
|
Definition
|
|
Term
| What are power relays referred to as? |
|
Definition
|
|
Term
| What problem may be created at the contacts when current flows in one direction through a relay? |
|
Definition
|
|
Term
| What type of tool is used to clean the contacts of a relay? |
|
Definition
|
|
Term
| What tool is used to adjust contact spacing of a relay? |
|
Definition
|
|
Term
| What is a machine that converts mechanical energy into electrical energy by using the principle of magnetic induction? |
|
Definition
|
|
Term
| Whenever a conductor is moved within a magnetic field in such a way that the conductor cuts across magnetic lines of flux, what is generated in the conductor? |
|
Definition
|
|
Term
| What can be used to determine the direction of current in a given situation? |
|
Definition
| Left hand rule for generators |
|
|
Term
| What is the simplest elementary generator that can be built? |
|
Definition
|
|
Term
| What is the loop of wire that rotates through the magnetic field in a generator called? |
|
Definition
|
|
Term
In a dc generator what replaces the slip rings of the ac generator?
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|
Definition
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|
Term
Nearly all practical generators use what instead of the permanent magnets used in an elementary generator?
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|
Definition
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|
Term
What is the process by which a dc voltage output is taken from an armature that has an ac voltage induced in it?
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|
Definition
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|
Term
What reduce the effects of armature reaction?
|
|
Definition
|
|
Term
When a generator delivers current to a load, the armature current creates a magnetic force that opposes the rotation of the armature that is called what?
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|
Definition
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|
Term
What is the device that provides the turning force applied to the armature called?
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|
Definition
|
|
Term
What is the power lost in the form of heat in the armature winding of a generator known as?
|
|
Definition
|
|
Term
What can be used to minimize copper loss in armature windings?
|
|
Definition
|
|
Term
What is the core of a generator armature made from?
|
|
Definition
|
|
Term
Currents induced in a conductor when it is rotated in a magnetic field are known as what?
|
|
Definition
|
|
Term
How thin may laminations in a small generator armature be?
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|
Definition
|
|
Term
What is a heat loss caused by the magnetic properties of the armature called?
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|
Definition
|
|
Term
What can be used to do away with most of the ripple in a generator that has only one or two armature loops and has high ripple voltage?
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|
Definition
|
|
Term
What type of armature is almost universally used in modern dc generators?
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|
Definition
|
|
Term
What type of winding is used in DC generators employed in high-voltage applications?
|
|
Definition
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|
Term
What is it called when a dc voltage is applied to the field windings of a dc generator which causes current flows through the windings and sets up a steady magnetic field?
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|
Definition
|
|
Term
What is a generator that supplies its own field excitation called?
|
|
Definition
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|
Term
Self-excitation is possible only if the field pole pieces have retained a slight amount of permanent magnetism, called what?
|
|
Definition
|
|
Term
Self-excited generators are classed according to the type of field connection they use. What are the three general types of field connections?
|
|
Definition
Series, Shunt, and Compound
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|
|
Term
What type of generator is rarely used in everyday practice?
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|
Definition
|
|
Term
Field coils consist of many turns of small wire which are connected in parallel with the load in what type of generator?
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Definition
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Term
What is usually expressed as the change in voltage from a no-load condition to a full-load condition, and is expressed as a percentage of full-load?
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Definition
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Term
What is an imposed action, usually through an external adjustment, for the purpose of increasing or decreasing terminal voltage?
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Definition
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Term
Most field rheostats for generators use resistors of what?
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Definition
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Term
What type of device "senses" changes in output voltage and causes a change in field resistance to keep output voltage constant?
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Definition
Automatic voltage control
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Term
When two or more generators are supplying a common load, they are said to be operating in what way?
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Definition
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Term
What supply large dc currents, precisely controlled, to the large dc motors used to drive heavy physical loads, such as gun turrets and missile launchers?
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Definition
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Term
What are the majority of the motors used throughout the Navy designed to operate on?
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Definition
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Term
What is the best type of motor for motors that require variable speeds?
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Definition
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Term
Which type of motors may be considered as polyphase motors, of constant speed, whose rotors are energized with DC voltage?
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Definition
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Term
Induction motors, single-phase or polyphase, whose rotors are energized by what, are the most commonly used AC motor?
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Definition
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Term
Induction, Synchronous, along with what else are the three basic types of AC motors?
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Definition
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Term
What can be used to drive an AC series motor efficiently?
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Definition
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Term
Which type of motors are used for driving fans, electric drills, and other small appliances?
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Definition
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Term
What is the key principle to the operation of most AC motors?
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Definition
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Term
Which type of motors are rarely used except in special-purpose equipment?
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Definition
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Term
Which type of motors are rarely used except in special-purpose equipment?
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Definition
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Term
Which type of winding is added to the rotor of a synchronous motor to cause it to start?
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Definition
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Term
What is the most commonly used type of AC motor?
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Definition
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Term
Which type of motors are induction motors called?
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Definition
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Term
What is the least expensive, lowest maintenance type of AC motor?
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Definition
Single-phase AC induction
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Term
Which type of motors are designed to use inductance, capacitance, or resistance to develop a starting torque?
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Definition
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Term
What is the speed of induction motors dependent on? (
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Definition
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Term
Common synchronous speeds for 60-hertz motors are 3600, 1800, 1200, and how many rpm, depending on the number of poles in the original design?
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Definition
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Term
What is the difference between actual rotor speed and the synchronous speed in induction motors?
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Definition
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Term
Most power supplies are made up of the following four basic sections: transformer, rectifier, filter, and what else?
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Definition
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Term
What steps up or steps down the input line voltage and isolates the power supply from the power line?
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Definition
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Term
What converts the alternating current input signal to a pulsating direct current?
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Definition
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Term
What converts the alternating current input signal to a pulsating direct current?
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Definition
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Term
What provides two equal voltages to the conventional full-wave rectifier?
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Definition
Center-tapped transformer
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Term
What is the conversion of an alternating current to a pulsating direct current?
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Definition
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Term
What is current called that flows in pulses in the same direction?
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Definition
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Term
Which terms are AC voltages normally specified in?
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Definition
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Term
Which type of device has two or more diodes arranged so that load current flows in the same direction during each half cycle of the ac supply?
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Definition
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Term
How many basic types of filter circuits are there?
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Definition
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Term
What is defined as the time it takes a capacitor to charge to 63.2 percent of the applied voltage or to discharge to 36.8 percent of its total charge?
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Definition
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Term
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Definition
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Term
What is the most basic type of power supply filter?
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Definition
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Term
Which type of filter is primarily used in power supplies where voltage regulation is important and where the output current is relatively high and subject to varying load conditions?
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Definition
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Term
What percent of a half-wave rectifier is the ripple frequency of a full-wave rectifier?
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Definition
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Term
Electrolytic capacitors are available in sizes up to how many microfarads or greater?
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Definition
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Term
What is one of the most commonly used filters primarily used in radio receivers, small audio amplifier power supplies, and in any type of power supply where the output current is low and the load current is relatively constant?
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Definition
LC capacitor-input filter
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Term
115 volts AC can vary from about 105 volts AC to how many volts AC?
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Definition
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Term
What gives an indication of how much the output voltage changes over a range of load resistance values?
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Definition
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Term
Basic voltage regulators are classified as one of what two ways?
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Definition
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Term
Which type of diode blocks current until a specified voltage is applied?
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Definition
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Term
Which circuitry provides a constant current output?
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Definition
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Term
What are used primarily to develop high voltages where low current is required?
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Definition
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Term
The DC output of the voltage multiplier ranges from 1000 to how many volts?
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Definition
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Term
In order for a silicon NPN transistor to conduct, the base must be between how many volts more positive than the emitter?
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Definition
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Term
What are the two widely used checks in testing electronic equipment?
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Definition
Signal tracing and Visual
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Term
What is a short-circuit protection device that automatically limits the current to a safe value?
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Definition
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