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Millwright Hydraulic – Questions With Solutions
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Millwright Hydraulic – Questions With Solutions
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Millwright Hydraulic – Questions With Solutions1. How much volume is delivered if the swash plate in an axial piston pump
is positioned at 90°?
a. None
b. Full capacity of the pump rating
c. Approximately half of the pump capacity
d. Depends on the fluid viscosity ✔️Ans - a. None
2. What is the first consideration when designing a fluid power system?
a. Ease of maintenance
b. Compatibility with existing parts
c. The load requirements
d. Location of equipment ✔️Ans - c. The load requirements
3. What is the cracking pressure of a check valve?
a. 10 psi
b. 3 to 5 psi
c. 1 psi
d. Above 10 psi ✔️Ans - b. 3 to 5 psi
4. What is the standard included angle of a JIC fitting?
a. 37°
b. 74°
c. 25 1⁄2°
d. 37 1⁄2° ✔️Ans - b. 74°
5. What is the function of the screw located in the end of a cylinder block?
a. Draining the cylinder for maintenance
b. Tightening the rod in place to ensure it doesn't move during service or
installation
c. Adjusting the cushion
, d. Inspection port for examining the condition of the piston seals ✔️Ans
- c. Adjusting the cushion
6. What does JIC stand for?
a. Joint Incident Committee
b. Joint Industrial Council
c. Joint Incident Council
d. Joint Industrial Committee ✔️Ans - b. Joint Industrial Council
7. What is cavitation?
a. When a pump is installed in a flooded application
b. When a pump can't handle the load
c. The incomplete filling of the pumping chamber
d. When the pump outlet line is oversized ✔️Ans - c. The incomplete
filling of the pumping chamber
8. What is the cause of cylinder creep?
a. Worn wiper
b. Light load
c. Leaking pump outlet
d. Worn piston seals or a scored cylinder wall ✔️Ans - d. Worn piston
seals or a scored cylinder wall
9. What is used to control the output of a variable displacement pump?
a. Compensator
b. Flow control valve
c. MPRV
d. Inlet size ✔️Ans - a. Compensator
10. What is a "quick disconnect" in a hydraulic system called?
a. Union
b. Pull piece
c. Coupling
d. Hose ✔️Ans - a. Union
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