Term
31A1: The Product of the readings of an AC voltmeter and AC ammeter is called: 

Definition


Term
31A2: What is the basic unit of electrical power? 

Definition


Term
31A3: What is the term used to express the amount of electrical energy stored in an electrostatic field? 

Definition
Joules
Joules = Capacity to do work = Stored in Capacitors = Defibrillators 


Term
31A4: What device is used to store electrical energy in an electrostatic field? 

Definition


Term
31A5: What formula would determine the inductive reactance of a coil if frequency and coil inductance are known? 

Definition


Term
31A6: What is the term for the outofphase power associated with inductors and capacitors? 

Definition
Reactive Power
Reactive Power = NonProductive = Out of Phase Power 


Term
32A1: What determines the strength of the magnetic field around a conductor? 

Definition


Term
32A2: What will produce a magnetic field? 

Definition
A current flowing through a conductor 


Term
32A3: When induced currents produce expanding magnetic fields around conductors in a direction that opposes the original magnetic field, this is known as: 

Definition


Term
32A4: The opposition to the creation of magnetic lines of force in a magnetic circuit is known as: 

Definition


Term
32A5: What is meant by the term "back EMF?" 

Definition
A voltage that opposes the applied EMF 


Term
32A6: Permeability is defined as: 

Definition
The ratio of magnetic flux density in a substance to the magnetizing force that produces it 


Term
33A1: What metal is usually employed as a sacraficial anode for corrosion control purposes? 

Definition


Term
33A2: What is the relative dielectric constant for air? 

Definition


Term
33A3: Which metal object may be least affected by galvanic corrosion when submerged in seawater? 

Definition
Stainless steel propeller shaft 


Term
33A4: Skin effect is the phenomenon where: 

Definition
RF current flows in a thin layer of the conductor, closer to the surface, as frequency increases 


Term
33A5: Corrosion resulting from electric current flow between dissimilar metals is called: 

Definition


Term
33A6: Which of these will be most useful for insulation at UHF frequencies? 

Definition


Term
34A1: What formula would calculate the total inductance of inductors in series? 

Definition


Term
34A2: Good conductors with minimum resistance have what type of electrons? 

Definition


Term
34A3: Which of the 4 groups of metals listed below are the best lowresistance conductors? 

Definition
Gold, silver and copper
Gold, Silver, Copper, Aluminum, Nickel, Iron, Lead



Term
34A4: What is the purpose of a bypass capacitor? 

Definition
It removes alternating current by providing a low impedance path to ground 


Term
34A5: How would you calculate the total capacitance of three capacitors in parallel? 

Definition
C_{T} = C_{1} + C_{2} + C_{3} 


Term
34A6: How might you reduce the inductance of an antenna coil? 

Definition
Reduce the number of turns 


Term
35A1: What are the two most commonlyused specifications for a junction diode? 

Definition
Maximum forward current and PIV, (peak inverse voltage) 


Term
35A2: What limits the maximum forward current in a junction diode? 

Definition


Term
35A3: MOSFETs are manufactured with THIS protective device built into their gate to protect the device from static charges and excessive voltages: 

Definition


Term
35A4: What are the two basic types of junction fieldeffect transistors? 

Definition


Term
35A5: A common emitter amplifier has: 

Definition
More voltage gain than a common collector 


Term
35A6: How does the input impedance of a fieldeffect transistor compare with that of a bipolar transistor? 

Definition
An FET has high input impedance; a bipolar transistor has low input impedance 


Term
36A1: An AC ammeter indicates: 

Definition
Effective (RMS) values of current 


Term
36A2: By what factor must the voltage of an AC circuit, as indicated on the scale of an AC voltmeter, be multiplied to obtain the peak voltage value? 

Definition


Term
36A3: What is the RMS voltage at a common household electrical power outlet? 

Definition


Term
36A4: What is the easiest voltage amplitude to measure by viewing a pure sine wave signal on an oscilloscope? 

Definition
Peaktopeak
Sine Wave goes peak to peak



Term
36A5: By what factor must the voltage measured in an AC circuit, as indicated on the scale of an AC voltmeter be multiplied to obtain the average voltage value? 

Definition


Term
36A6: What is the peak voltage at a common household electrical outlet? 

Definition


Term
37A1: What is a sine wave? 

Definition
A wave whose amplitude at any given instant can be represented by the projection of a point on a wheel rotating at a uniform speed 


Term
37A2: How many degrees are there in one complete sine wave cycle? 

Definition


Term
37A3: What type of wave is made up of sine waves of the fundamental frequency and all the odd harmonics? 

Definition


Term
37A4: What is the description of a square wave? 

Definition
A wave that abruptly changes back and forth between two voltage levels and stays at these levels for equal amounts of time 


Term
37A5: What type of wave is made up of sine waves at the fundamental frequency and all the harmonics? 

Definition


Term
37A6: What type of wave is characterized by a rise time significantly faster than the fall time (or vice versa)? 

Definition


Term
38A1: What is the term used to identify an AC voltage that would cause the same heating in a resistor as a corresponding value of DC voltage? 

Definition


Term
38A2: What happens to reactive power in a circuit that has both inductors and capacitors? 

Definition
It alternates between magnetic and electric fields and is not dissipated 


Term
38A3: Halving the crosssectional area of a conductor will: 

Definition


Term
38A4: Which of the following groups is correct for listing common materials in order of descending conductivity? 

Definition
Silver, copper, aluminum, iron and lead 


Term
38A5: How do you computer true power (power dissipated in the circuit) in a circuit where AC voltage and current are out of phase? 

Definition
Multiply apparent power times the power factor 


Term
38A6: Assuming a power source to have a fixed value of internal resistance maximum power will be transferred to the load when: 

Definition
The load impedance equals the internal impedance of the source 


Term
39B1: What value of series resistor would be needed to obtain a full scale deflection on a 50 microamp DC meter with an applied voltage of 200 volts DC? 

Definition


Term
39B2: Which of the following Ohms Law formulas is incorrect? 

Definition


Term
39B3: If a current of 2 amperes flows through a 50ohm resistor, what is the voltage across the resistor? 

Definition


Term
39B4: If a 100ohm resistor is connected across 200 volts, what is the current through the resistor? 

Definition


Term
39B5: If a current of 3 amperes flows through a resistor connected to 90 volts, what is the resistance? 

Definition


Term
39B6: A relay coil has 500 ohms resistance, and operatores on 125 mA. What value of resistance should be connected in series with it to operate from 110 V DC? 

Definition


Term
310B1: What is the peaktopeak RF voltage on the 50 ohm output of a 100 watt transmitter? 

Definition


Term
310B2: What is the maximum DC or RMS voltage that may be connected across a 20 watt, 2000 ohm resistor? 

Definition


Term
310B3: A 500ohm, 2watt resistor and a 1500ohm, 1watt resistor are connected in parallel. What is the maximum voltage that can be applied across the parallel circuit without exceeding wattage ratings? 

Definition


Term
310B4: In Figure 3B1, what is the voltage drop across R_{1}? 

Definition


Term
310B5: In Figure 3B2, what is the voltage drop across R_{1}? 

Definition


Term
310B6: What is the maximum rated currentcarrying capacity of a resistor marked "2000 ohms, 200 watts?" 

Definition


Term
311B1: What is the most the actual transmit frequency could differ from a reading of 462,100,000 hertz on a frequency counter with a time base accuracy of + 0.1 ppm? 

Definition


Term
311B2: The second harmonic of a 380 kHz frequency is: 

Definition


Term
311B3: What is the second harmonic of SSB frequency 4146 kHz? 

Definition


Term
311B4: What is the most the actual transmitter frequency could differ from a reading of 156,000,000 hertz on a frequency counter with a time base accuracy of + 1.0 ppm? 

Definition


Term
311B5: What is the most the actual transmitter frequency could differ from a readingof 156,520,000 hertz on a frequency counter with a time base accuracy of + 10 ppm? 

Definition


Term
311B6: What is the most the actual transmitter frequency could differ from a reading of 462,100,000 hertz on a frequency counter with a time base accuracy of + 1.0 ppm? 

Definition


Term
312B1: At pi/3 radians, what is the amplitude of a sinewave having a peak value of 5 volts? 

Definition


Term
312B2: At 150 degrees, what is the amplitude of a sinewave having a peak value of 5 volts? 

Definition


Term
312B3: At 240 degrees, what is the amplitude of a sinewave having a peak value of 5 volts? 

Definition


Term
312B4: What is the equivalent to the rootmeansquare value of an AC voltage? 

Definition
The DC voltage causing the same heating in a given resistor as the RMS AC voltage of the same value 


Term
312B5: What is the RMS value of a 340volt peaktopeak pure sine wave? 

Definition


Term
B12B6: Determine the phase relationship between the two signals shown in Figure 3B3. 

Definition
B is lagging A by 90 degrees 


Term
313B1: What does the power factor equal in an RL circuit having a 60 degree phase angle between the voltage and the current? 

Definition


Term
313B2: If a resistance to which a constant voltage is applied is halved, what power dissipation will result? 

Definition


Term
313B3: 746 watts, corresponding to the lifting of 550 pounds at the rate of onefootpersecond, is the equvalent of how much horsepowe? 

Definition


Term
313B4: In a circuit where the AC voltage and current are out of phase, how can the true power be determined? 

Definition
By multiplying the apparent power times the power factor 


Term
313B5: What does the power factor equal in an RL circuit having a 45 degree phase angle between the voltage and the current? 

Definition


Term
313B6: What does the power factor equal in an RL circuit having a 30 degree phase angle between the voltage and the current? 

Definition


Term
314B1: What is the term for the time required for the capacitor in a RC circuit to be charged to 63.2% of the supply voltage? 

Definition


Term
314B2: What is the meaning of the term "time constant of a RC circuit"? The time required to charge the capacitor in the circuit to: 

Definition
63.2% of the supply voltage 


Term
314B3: What is the term for the time required for teh current in a RL circuit to build to 63.2% of the maximum value? 

Definition


Term
314B4: What is the meaning of the term "time constant of an RL circuit"? The time required for the: 

Definition
Current in the circuit to build up to 63.2% of the maximum value 


Term
314B5: After two time constants, the capacitor in a RC circuit is charged to what percentage of the supply voltage? 

Definition


Term
314B6: After two time constants, the capacitor in a RC circuit is discharged to what percentage of the starting voltage? 

Definition


Term
315B1: What is the time constant of a circuit having two 220microfarad capacitors and two 1megaohm resistors all in parallel? 

Definition


Term
315B2: What is the time constant of a circuit having two 100microfarad capacitors and two 470kilohm resistors all in series? 

Definition


Term
315B3: What is the time constant of a circuit having a 100microfarad capacitor and a 470kilohm resistor in series? 

Definition


Term
315B4: What is the time constant of a circuit having a 220microfarad capacitor and a 1megohm resistor in parallel? 

Definition


Term
315B5: What is the time constant of a circuit having two 100microfarad capacitors and two 470kilohm resistors all in parallel? 

Definition


Term
315B6: What is the time constant of a circuit having two 220microfarad capacitors and two 1megohm resistors all in series? 

Definition


Term
316B1: What is the impedance of a network composed of a 0.1microhenry inductor in series with a 20ohm resistor, at 30 MHz? Specify your answer in rectangular coordinates? 

Definition


Term
316B2: In rectangular coordinates, what is the impedance of a network composed of a 0.1microhenry inductor in series with a 30ohm resistor, at 5 MHz? 

Definition


Term
316B3: In rectangular coordinates, what is the impedance of a network composed of a 10microhenry inductor in series with a 40ohm resistor, at 500 MHz? 

Definition


Term
316B4: In rectangular coordinates, what is the impedance of a network composed of a 1.0millihenry inductor in series with a 200ohm resisitor, at 30 kHz? 

Definition


Term
316B5: In rectangular coordinates, what is the impedance of a network composed of a 0.01microfarad capacitor in parallel with a 300ohm resistor, at 50 kHz? 

Definition


Term
316B6: In rectangular coordinates, what is the impedance of a network composed of a 0.001microfarad capacitor in series with a 400ohm resistor, at 500 kHz? 

Definition


Term
3.17B1: What is the impedance of a network composed of a 100picofarad capacitor in parallel with a 4000ohm resistor, at 500 KHz? Specify your answer in polar coordinates. 

Definition
2490 ohms,  51.5 degrees 


Term
317B2: In polar coordinates, what is the impedance of a network composed of a 100ohmreactance inductor in series with a 100ohm resistor? 

Definition


Term
317B3: In polar coordinates, what is the impedance of a network composed of a 400ohm reactance capacitor in series with a 300ohm resistor? 

Definition
500 ohms,  53.1 degrees 


Term
317B4: In polar coordinates, what is the impedance of a network composed of a 300ohmreactance capacitor, a 600ohmreactance inductor, and a 400ohm resistor, all connected in series? 

Definition


Term
317B5: In polar coordinates, what is the impedance of a network comprised of a 400ohmreactance inductor in parallel with a 300ohm resistor? 

Definition


Term
317B6: Using the polar coordinate system, what visual respresentation would you get of a voltage in a sinewave circuit? 

Definition
The plot shows the magnitude and phase angle



Term
318B1: What is the magnitude of the impedance of a series AC circuit having a resistance of 6 ohms, an inductive reactance of 17 ohms, and zero capacitive reactance? 

Definition


Term
318B2: A 1watt, 10volt Zener diode with the following characteristics: I_{min} = 5 mA; I_{max} = 95 mA; and Z = 8 ohms, is to be used as part of a voltage regulator in a 20V power supply. Approximately what size currentlimiting resistor would be used to set its bias to the midpoint of its operating range? 

Definition


Term
318B3: Given a power supply with a no load voltage of 12 volts and a full load voltage of 10 volts, what is the percentage of voltage regulation? 

Definition


Term
318B4: What turns ratio does a transformer need in order to match a source impedance of 500 ohms to a load of 10 ohms? 

Definition


Term
318B5: Given a power supply with a full load voltage of 200 volts and a regulation of 25%, what is the no load voltage? 

Definition


Term
318B6: What is the conductance (G) of a circuit if 6 amperes of current flows when 12 volts DC is applied? 

Definition


Term
319C1: What happens to the conductivity of photoconductive material when light shines on it? 

Definition


Term
319C2: What is the photoconductive effect? 

Definition
The increased conductivity of an illuminated semiconductor junction 


Term
319C3: What does the photoconductive effect in crystalline solids produce a noticeable change in? 

Definition
The resistance of the solid 


Term
319C4: What is the description of an optoisolator? 

Definition
An LED and a photosensitive device 


Term
319C5: What happens to the conductivity of a photosensitive semiconductor junction when it is illuminated? 

Definition
The junction resistance decreases 


Term
319C6: What is the description of an optocoupler? 

Definition
An LED and a phtosensitive device 


Term
320C1: What factors determine the capacitance of a capacitor? 

Definition
Distance between the plates and the dielectric constant of the material between the plates 


Term
320C2: In figure 3C4, if a small variable capacitor were installed in place of the dashed line, it would? 

Definition
Decrease parasitic oscillations 


Term
320C3: In Figure 3C4: which component (labeled 1 through 4) is used to provide a signal ground? 

Definition


Term
320C4: In Figure 3C5, which capacitor (labeled 1 though 4) is being used as a bypass capacitor? 

Definition


Term
320C5: In Figure 3C5, the 1 uF capacitor is connected to a potentiometer that is used to: 

Definition


Term
320C6: What is the purpose of a coupling capacitor? 

Definition
It blocks direct current and passes alternating current 


Term
31C1: A capacitor is sometimes placed in series with the primary of a powe transformer to: 

Definition


Term
321C2: A transformer used to step up its input voltage must have: 

Definition
More turns of wire on its secondary than on its primary 


Term
321C3: A transformer primary of 2250 turns connected to 120 VAC will develop what voltage across a 500turn secondary? 

Definition


Term
321C4: What is the ratio of the output frequency to the input frequency of a singlephase fullwave rectifier? 

Definition


Term
321C5: A power transformer has a single primary winding and three secondary windings producig 5.0 volts, 12.6 volts, and 150 volts. Assuming similar wire sizes, which of the three secondary windings will have the highest measured DC resistance? 

Definition


Term
321C6: A power transformer has a primary winding of 200 turns of #24 wire and a secondary winding consisting of 500 turns of the same size wire. When 20 volts are aplied to the primary winding, the expected secondary voltage will be: 

Definition


Term
322C1: In a linear electronic voltage regulator: 

Definition
The conduction of a control element is varied in direct proportion to the line voltage or load current 


Term
322C2: A switching electronic voltage regulator: 

Definition
Switches the control device on and off, with the duty cycle proportional to the line or load conditions 


Term
322C3: What device is usually used as a stable reference voltage in a linear voltage regulator? 

Definition


Term
322C4: In a regulated power supply, what type of component will most likely be used to establish a reference voltage? 

Definition


Term
322C5: A threeterminal regulator: 

Definition
Contains a voltage reference, error amplifier, sensing resistors and transistors, and a pass element
V.E.S.T.P. 


Term
322C6: What is the range of voltage ratings available in Zener diodes? 

Definition
2.4 volts to 200 volts and above 


Term
323C1: How might two similar SCRs be connected to safely distribute the power load of a circuit? 

Definition
In parallel, reverse polarity 


Term
323C2: What are the three terminals of a SCR? 

Definition


Term
323C3: Which of the following devices acts as two SCRs connected back to back, but facing in opposite directions and sharing a common gate? 

Definition


Term
323C4: What is the transistor called that is fabricated as two complementary SCRs in parallel with a common gate terminal? 

Definition


Term
323C5: What are the three terminals of a TRIAC? 

Definition
Gate, anode 1, and anode 2 


Term
323C6: What circuit might contain a SCR? 

Definition


Term
324C1: What is one common use for PIN diodes? 

Definition


Term
324C2: What is a common use of a hotcarrier diode? 

Definition
VHF and UHF mmixers and detectors 


Term
3024C3: Structurally, what are the two main categories of semiconductor diodes? 

Definition
Junction and point contact 


Term
324C4: What special type of diode is capable of both amplification and ocsillation? 

Definition
Tunnel diodes
(Have negative resistance) 


Term
324C5: What type of semiconductor diode varies its internal capacitance as the voltage applied to its terminals varies? 

Definition


Term
324C6: What is the principal characteristic of a tunnel diode? 

Definition
Negative resistance region
(Tunnel diode is used for Amplicfication and Oscillation) 


Term
325C1: What is the meaning of the term "alpha" with regard to bipolar transistors? The change of: 

Definition
Collector current with respect to emitter current
(C.C.E.C.) 


Term
325C2: What are the three terminals of a bipolar transistor? 

Definition
Base, collector and emitter 


Term
325C3: What is the meaning of the term "beta" with regard to bipolar transistors? The change of: 

Definition
Collector current with respect to base current 


Term
325C4: What are the elements of a unijunction transistor? 

Definition
Base 1, base 2, and emitter 


Term
325C5: The beta cutoff frequency of a bipolar transistor is the frequency at which: 

Definition
Emitter current gain has decreased to 0.707 of maximum 


Term
325C6: What does it mean for a transistor to be fully saturated? 

Definition
The collector current is at its maximum value 


Term
326C1: A common base amplifier has: 

Definition
More voltage gain than common emitter or common collector 


Term
326C2: What does it mean for a transistor to be cut off? 

Definition
There is no current between emitter and collector 


Term
326C3: An emitterfollower amplifier has: 

Definition
More current gain than common emitter or common base 


Term
326C4: What conditions exits when a transistor is operating in saturation? 

Definition
The baseemitter junction and collectorbase junction are both forward biased 


Term
326C5: For current to flow in an NPN silicon transistor's emittercollector junction, the base must be: 

Definition
At least 0.7 volts positive with respect to the emitter 


Term
36C6: When an NPN transistor is operating as a Class A amplifier, the baseemitter junction 

Definition
Is forward biased and the collectorbase junction is reverse biased 


Term
327C1: What type of bias is required for an LED to produce luminescence? 

Definition


Term
327C2: What determines the visible color radiated by an LED junction? 

Definition
The materials used to construct the deivce 


Term
337C4: What is the approximate operating current of a lightemitting diode? 

Definition


Term
327C4: What would be the maximum current to safely illuminate a LED? 

Definition


Term
327C5: An LED facing a photodiode in a lighttight enclosure is commonly known as a/an: 

Definition


Term
327C6: What circuit component must be connected in series to protect an LED? 

Definition


Term
328C1: What describes a diode junction that is forward biased? 

Definition


Term
328C2: Why are special precautions necessary in handling FET and CMOS devices? 

Definition
They are susceptible to damage from static charges 


Term
228C3: What do the initials CMOS stand for? 

Definition
Complementary metaloxide semiconductor 


Term
328C4: What is the piezoelectric effect? 

Definition
Mechanical vibration of a crystal by the application of a voltage 


Term
228C5: An electrical relay is a: 

Definition
Remotely controlled switching device 


Term
328C6: In which oscillator circuit would you find a quartz crystal? 

Definition

