i need ans within 8 minutes with draw happy emoji in the end my best wishes ton 4) Variable displacement pumps change the output flow bya) changing either the pumps rpm and/or swash plate angle. Vb) only changing the swash plate angle.c) only changing the pump's rpm.5. A pilot operated relief valve utilizes a small orifice in the main spool for the purpose of creating a pressure differentialacross the spool when the pilot poppet is open.а) Trueb) FalseSubject : Hydraulic and pneumatic controlsystem6. The first stage of a pilot operated relief valve is actually a small direct acting relief valve.a) Trueb) False7. A sequence valve is a flow control valve.а) Trueb) False8. The pressure downstream of a sequence valve is limited to the sequence valves settings.a) Trueb) False9. Pressure reducing valves are used to limit maximum system pressure.a) Trueb) False10. A counterbalance valve is a normally open flow control valve.a) Trueb) False11. A counterbalance valve is used to control a cylinder with a negative or overrunning load to move at a controlled rate.a) Trueb) False12. A closed center system maintains constant flow, but no pressure when the directional control valve is centered.a) Trueb) False13. In an open center system, flow passes through the valve center and back to tank at low pressure when the valve iscentered.a) Trueb) False14. Unlike other pressure control valves, the pressure reducing valve senses its pilot from the secondary port of the valve.а) Trueb) False

“Since you have asked multiple question, we will solve the first question for you. If you want any…

Answered: 4) Variable displacement pumps change…

4) Variable displacement pumps change the output flow by a) changing either the pumps rpm and/or swash plate angle. V b) only changing the swash plate angle. c) only changing the pump's rpm.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

i need ans within 8 minutes with draw happy emoji in the end my best wishes ton

4) Variable displacement pumps change the output flow by
a) changing either the pumps rpm and/or swash plate angle. V
b) only changing the swash plate angle.
c) only changing the pump's rpm.
5. A pilot operated relief valve utilizes a small orifice in the main spool for the purpose of creating a pressure differential
across the spool when the pilot poppet is open.
а) True
b) False
Subject : Hydraulic and pneumatic control
system
6. The first stage of a pilot operated relief valve is actually a small direct acting relief valve.
a) True
b) False
7. A sequence valve is a flow control valve.
а) True
b) False
8. The pressure downstream of a sequence valve is limited to the sequence valves settings.
a) True
b) False
9. Pressure reducing valves are used to limit maximum system pressure.
a) True
b) False
10. A counterbalance valve is a normally open flow control valve.
a) True
b) False
11. A counterbalance valve is used to control a cylinder with a negative or overrunning load to move at a controlled rate.
a) True
b) False
12. A closed center system maintains constant flow, but no pressure when the directional control valve is centered.
a) True
b) False
13. In an open center system, flow passes through the valve center and back to tank at low pressure when the valve is
centered.
a) True
b) False
14. Unlike other pressure control valves, the pressure reducing valve senses its pilot from the secondary port of the valve.
а) True
b) False

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