Term
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Definition
| THE USE OF LIQUID PRESSURE AND FLOW TO TRANSMIT POWER OR MODIFY MOTION. |
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Term
| WHAT ARE THE ADVANTAGES OF HYDRAULICS? |
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Definition
-INSTANT REVERSIBILITY WITHOUT DAMAGEING COMPONENTS.
- HIGH -POWER OUTPUT WITH SMALL WEIGHT AND SIZE OF HYDR. COMPONENTS.
-FLUID POWER IS BETTER THAN MECHANICAL OVER MODERATE DISTANCES
-ACTUATORS CAN BE INSTALLED WITHOUT DAMAGE TO SYSTEM OR COMPONENTS.
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Term
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Definition
| A DEVICE THAT CONVERTS HYDRAULIC INTO MECHANICAL ENERGY. |
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Term
| WHAT ARE THE DISADVANTAGES OF HYDRAULICS? |
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Definition
-INSTALLATION AND COMPONENT REPLACEMENT ARE EXPENSIVE
-HYDR. FLUIDS ARE FLAMMABLE/ HAZARDOUS
-HYDR. FLUIDS OPERATE AT HIGH PRESSURES. |
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Term
WHAT ARE COMMON USES
FOR HYDR. FLUIDS?
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Definition
-STEERING SYSTEMS
-BOOMS/CRANES
-WINCHES AND OTHER MACHINERY
-FIN STABILIZER SYSTEMS
-CONTOLLABLE PROPELLERS |
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Term
| WHAT IS PASCAL'S THEORY ? |
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Definition
-FLUIDS ARE NEALRY INCOMPRESSIBLE
-FLUIDS ALWAYS TAKE THE SAPE OF THEIR CONTAINER.
-CONFINED FLUIDS CAN BE USED TO TRANSMIT POWER, MULTIPLY FORCE, AND MODIFY MOTION. |
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Term
| WHAT IS THE FORMULA TRIANGLE ? |
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Definition
[image]
FORCE= PRESSURE X AREA
PRESSURE=FORCE/AREA
AREA=FORCE/PRESSURE |
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Term
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Definition
THE MEASURE OF A BOUNDED REGION OR PLANE.
USUALLY EXPRESSED IN SQUARE INCHES. |
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Term
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Definition
ANYTHING THAT TENDS TO PRODUCE OR MODIFY MOTION.
USUALLY EXPRESSED IN UNITS OF WEIGHT |
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Term
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Definition
| FORCE PER UNIT AREA AND IS MEASURED IN POUNDS PER SQUARE INCH. |
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Term
| WITH HYDRAULIC PRESSURE WHAT CAUSES A PISTON ROD TO EXTEND? |
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Definition
| PRESSURE ON THE CAP OR BLIND END. |
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Term
| WITH HYDR. PRESSURE WHAT CAUSES A PISTON ROD TO RETRACT? |
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Definition
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Term
| HOW IS THE THE CAP END AREA OF A CYLINDER CALCULATED? |
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Definition
AREA = D2 .7854
D= DIMETER IN INCHES |
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Term
| WHAT IS A LINEAR ACTUATOR? |
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Definition
| A DEVICE FOR CONVERTING HYDRAULIC ENERGY INTO LINEAR MOTION (A CYLINDER OR RAM) |
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Term
| HOW DO YOU CALCULATE FORCE? |
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Definition
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Term
| EXPLAINE MECHANICAL ADVANTAGE FOR A LEVER. |
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Definition
| A 10LB BLOCK SUPPORTING A 100LB BLOCK WITH THE USE OF A FULCRUM(PIVOT POINT) |
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Term
| EXPLAINE THE HYDRULIC ADVANTAGE. |
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Definition
WHEN PRESSURE ADDED TO ONE PISTON, THROUGH HYDRAULIC FLIUD, WEIGHT WILL BE LIFTED HEAVIER THAN THE INITIAL PRESSURE.
10LB = 100LB
1 IN SQ 10 IN. SQ
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Term
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Definition
-ESTABLISHES PRINCIPLES FOR THE USE OF SYMBOLS FOR HYDRAULICS.
-SPECIFIES BASIC SYMBOLS AND RULES FOR FUNCTIONAL SYMBOLS. |
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Term
| WHO ENSURES THE STANDADRIZATION WITHIN THE USA? |
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Definition
-THE AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)
-NATIONAL FLUID POWER ASSOCIATION(NFPA)
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Term
THE HYDRAULIC SYMBOLS WE USE TODAY ARE AUTHORIZED AND CONTROLLED BY :
WHO? |
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Definition
| THE INTERNATIONAL STANDARDS ORGANIZATION |
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Term
| WHAT IS THE BASIC SYMBOL OF A ROTATING COMPONENT ? |
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Definition
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Term
| FOR A ROTATING COMPONENT SYMBOL : ONE TRIANGLE MEANS:? / AND TWO TRIANGLES MEANS:? |
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Definition
UNIDIRECTIONAL
/ BI- DIRECTIONAL |
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Term
| WHAT IS THE BASIC SYMBOL FOR A CONTROL COMPONENET ? |
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Definition
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Term
| WHAT IS THE BASIC SYMBOL FOR A CONDITIONING APPARATUS ? |
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Definition
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Term
WHAT DOES ISO STAND FOR ?
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Definition
| INTERNATIONAL STANDARDS ORGANIZATION |
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Term
| WHAT IS A "WORKING LINE" IN A SCHEMATIC ? |
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Definition
- A CONTINUOUS SOLID LINE.
= _____________
- CARRIES FULL SYSTEM FLOW, AND INCLUDES SUCTION LINES, PRESSURE LINES AND RETURN LINES. |
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Term
| WHAT IS A "PILOT LINE" IN A SCHEMATIC? |
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Definition
A DASHED LINE. = ------------
USED TO SEND A SIGNAL OR TO CONTROL A VALVE OR OTHER COMPONENT /WITH VERY LITTLE FLOW |
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Term
WHAT IS A "DRAIN LINE" IN A SCHEMATIC?
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Definition
-A DASHED LINE = --------------
-USED TO CARRY INTERNAL LEAKAGE FLUID FROM A COMPONENT TO THE RESERVOIR.
-VERY LOW PRESSURE |
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Term
WHAT IS A "COMPONENT ENCLOSURE LINE" IN A SCHEMATIC ?
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Definition
SHOWN BY SHORT AND LONG DASHED LINES
TO ENCLOSE TWO OR MORE COMPONENETS TO INDICATE GROUPING.
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Term
| WHAT IS IT CALLED WHEN A HYDRAULIC SYSTEMS COMPONENS ARE LINKED TO MAKE A WORKING SYSTEM? |
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Definition
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Term
| WHAT ARE THE TWO TYPES OF HYDRAULIC CIRCUITS? |
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Definition
| OPEN LOOP AND CLOSED LOOP. |
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Term
| HOW DO YOU CHECK IF A A HYDRAULIC SYSTEM IS DEPRESSURIZED WITHOUT A GAUGE? |
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Definition
| SLOW CRACK OPEN THE FITTINGS AND CHECK FOR PRESSURE. |
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Term
| WHAT ARE THE FOUR MAIN REQUIREMENTS OF A HYDRA. SYSTEM? |
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Definition
-TO TRANSMIT POWER
- TO COOL
- TO SEAL
- TO LUBRICATE |
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Term
| DUE TO THE FULID PROPERTY OF INCOMPRESSIBILITY, A PROPERLY MAINTAINED HYDRA. SYSTEM WILL BE __?__ |
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Definition
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Term
| DRAW HOW HYDR FLUID TRANSMITS POWER |
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Definition
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Term
| WHAT ARE THREE SOURCES OF HEAT IN A HYDRAULIC SYSTEM? |
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Definition
-PRESSURE DIFFERENTIAL
-RESISTANCE TO FLOW
-EXTERNAL HEAT |
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Term
| WHAT DOES A LUBRICATING FILM DO FOR MOVING PARTS? |
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Definition
| PREVENTS METAL TO METAL CONTACT. |
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Term
| WHAT IS THE MOST IMPORTAINT PROPERTY OF ANY HYDRAULIC FLUID? |
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Definition
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Term
| VISCOSITY OF A FLUID IS DEFINED AS WHAT? |
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Definition
| RESISTANCE TO FLOW AT A GIVEN TEMPERATURE. |
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Term
| VISCOSITY ITSELF IS MEASURED HOW? |
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Definition
IN SAYBOLT SECONDS UNIVERSAL
(SSU OR SUS) |
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Term
| WHAT DOES IT MEAN WHEN YOU FIND A VERY HIGH SSU NUMBER? |
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Definition
| THE THICKER THE FLUID IS GOING TO BE. |
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