题目内容（请给出正确答案）

[主观题]

If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be __

___.

A.a low load on the unit

B.a clogged pump suction strainer

C.a blockage in the line between the pump and hydraulic motor

D.the hydraulic motor turning too fast

提问人：网友edisundong 发布时间：2022-01-06

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更多“If the relief valve on the dis…”相关的问题

第1题

Which one of following statement is not true concerning the suitable sites of the direct a

cting relief valve and the pilot operated relieve valve？

A.the direct acting relief valve is used for controlling lower flows and pressure

B.the pilot operated relief valve is used for controlling higher flows and pressure

C.the pilot operated relief valve is used for controlling lower flows and pressure

D.the controlling accuracy of direct acting relief valve is worse than that of the pilot operated relief valve

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第2题

If the head pressure is too high, .A.the relief valve should open before the high-pressure

If the head pressure is too high, .

A.the relief valve should open before the high-pressure cutout

B.the relief valve should open and let excess refrigerant go to receiver

C.the high-pressure cutout switch should operate before the relief valve opens

D.close in on the suction valve

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第3题

If the head pressure of a reciprocating refrigeration compressor is excessiveA.the relief

If the head pressure of a reciprocating refrigeration compressor is excessive

A.the relief valve should open before the high pressure cutout

B.the relief valve should open and allow the excess refrigerant to flow to the receiver

C.the high pressure cutout switch should operate before the relief valve opens

D.you should close the discharging valve

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第4题

Pressure Relief Valve()。

Pressure Relief Valve（)。

A、截止阀

B、调节阀

C、倒流阀

D、减压阀

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第5题

The device used for preventing the passage of flames into enclosed spaces is called a ____

A.flame relief valve

B.flame stopper

C.safety valve

D.flame arrester

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第6题

_____ at the end of the distribution pipe ensures that adequate pressure is maintained by

the pump.

A.A relief valve

B.An alarm

C.A pressure gauge

D.A non-maim valve

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第7题

The diesel engine valve subjected to most severe conditions of service is the _____.A.cyli

The diesel engine valve subjected to most severe conditions of service is the _____.

A.cylinder exhaust valve

B.air starting valve

C.air inlet valve

D.cylinder relief valve

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第8题

What is the purpose of the relief valve of a cargo pump ________．A.Provides for the remova

What is the purpose of the relief valve of a cargo pump ________．

A.Provides for the removal of vapors

B.Allows two or more tanks to be filled at the same time

C.Provides for the emergency shutdown of the pump

D.Permits the return of cargo to the suction side of the pump

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第9题

In a full flow type lube oil system, the bypass relief valve will lift due to .A.a clogged

In a full flow type lube oil system, the bypass relief valve will lift due to .

A.a clogged filter element

B.excessive lube oil pump discharge pressure

C.excessive lube oil flow

D.excessively hot lube oil

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第10题

If a single cylinder relief valve on a diesel engine lists frequently while the engine is

running, the cause may be an ___________.

A.excessively late injection timing for each cylinder

B.incorrectly adjusted intake valve timing

C.incorrectly adjusted fuel injector

D.incorrectly adjusted intake valve clearance

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第11题

A device fitted over the discharge opening on a relief valve consisting of one or two wove

n wire fabrics is called a flame ______.

A.stopper

B.screen

C.filter

D.restrictor

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