hydraulic nslructions Record your name and all answers on the ScanTron sheot pro
ID: 1767028 • Letter: H
Question
hydraulic nslructions Record your name and all answers on the ScanTron sheot provided, Use a so lead pen 1. The hydraulic System is much more efficlent than the mechanical system for transmiting power a. True False 2. Hydraulic brakes are characterized by a fluid power stowing the wheels b, an open-center valve e a mechanical link that slows the axle. d. a colemn of tapped oil, which clamps tdhe brake disk, or shoe, to skow the wheels 3. Avoid welding or soldering ncar pressurized fuel lines a. True b. False 4. A fixed-displacement pump varies pamp outpst, dapending upon the pressure requirement. a. True b. False open-center valve spool is closed in the center to dead-end pump oil a. True b. False 6. Hydraslic systems store fluids under low pressure, asually less than 20 psi (138 kPa). a. True b. False 7. If you pash down with ever-increasing force on a cork that lightly seals a full jair of liquid a. the liquid will absorb more and more energy until it forces the cork out of the jar b. the lid portion of the jar will break off first. c, the jar will eventually shater d. none of the above. 8. In an open-center system: a. the pump runs intermittently. b. the valve spool closes in neutral to dead-end oil flow c. the flow divider speeds up oil flow. d. the pump runs constantly 9. All energy put into a hydraulic system must come out as work or heat. a. True b. False 10. Control valves direct the flow of oil. a. True b. False Page 1Explanation / Answer
1.a.true
the hydraulic system is much more efficient than the mechanical system for transmitting the power.
2.d. the hydraulic brakes are characterized by a column of trapped oil, which clamps the brake disc or shoe to slow the wheels.
3.b. False. avoid welding or soldering near pressurized fuel lines.
4.a. true.a fixed displacement pump varies pump output, depending upon the pressure requirement.
5.a. true.an open center valve spool is closed in the center to dead end pump oil.
6.b. false. hydraulic systems store fluids under lower pressure, usually less than 20psia.
7.a. the liquid will absorb more and more energy until it forces the cork out of the jar.
8.in an open center system d. the pump runs constantly.
9.a. true.all energy put into a hydraulic system must come out as work or heat.
10.b. false. control valves does not direct the flow of oil.
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