Hydraulic systems 1 part 2
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Physics
University
NGSS covered
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24 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Relief valves allow flow to bypass the system and return to the _____.
A. Atmosphere
B. Pump
C. Actuator
D. Reservoir
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The primary purpose of a relief valve is to _____.
A. Control flow
B. Avoid pump reversal
C. Limit system pressure
D. Hold pump prime
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A relief valve opens at _____ pressure.
A. Full flow pressure
B. Operating pressure
C. Override pressure
D. Cracking pressure
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The advantage of a pilot-operated relief valve over a direct-acting relief valve is _____.
A. Shorter pressure span
B. Lower cost
C. Less leakage
D. Less parts
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Check valves are used in hydraulics to _____.
A. Control flow
B. Control speed
C. Block flow
D. Control system pressure
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Describe the function of the check valve indicated.
A. To serve as a tank isolation valve
B. To serve as an anti-cavitation check valve
C. To provide meter in control
D. To serve as a back-pressure check valve
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The purpose of a pressure-reducing valve in a circuit is to _____.
A. Provide for over-pressure protection
B. Drop the pressure in a branch circuit
C. Sequence cylinder action
D. None of the above
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