海船船员考试

单选题In a full flow type lube oil system, the bypass relief valve will lift due to （）A a clogged filter elementB excessive lube oil pump discharge pressureC excessive lube oil flowD excessively hot lube oil

题目
单选题
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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相似问题和答案

第1题：

What type of valve is used to direct the flow of hydraulic fluid?

A.relief valve

B.direction control valve

C.stop valve

D.pressure control valve


正确答案：B

第2题：

单选题
A substantial increase pressure could be an indication of a/an （）
A

worn cylinder liner

B

faulty cylinder relief valve

C

excessive lube oil pressure

D

excessive scavenge air pressure


正确答案： D
解析： 暂无解析

第3题：

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


正确答案：C

第4题：

单选题
Refrigeration system compressor crankcase sweating is an indication of （）.
A

insufficient lube oil circulating through the system

B

excessive circulation of lube oil through the system

C

insufficient refrigerant in the system

D

an overworked compressor


正确答案： D
解析： 暂无解析

第5题：

单选题
A substantial increase in crankcase pressure could be an indication of （）
A

excessive lube oil pressure

B

the proper seating of new rings

C

a worn cylinder liner

D

a malfunctioning cylinder relief valve


正确答案： C
解析： 暂无解析

第6题：

单选题
When the desired rudder angle is attained by a typical double mm electro-hydraulic steering gear,the（）.
A

ram relief valves bypass oil to stop rudder movement

B

six-way valve shifts to the neutral flow position

C

steering pump electric motor is de - energized by the transfer switch

D

follow-up gear takes the hydraulic pump off stroke


正确答案： D
解析： 暂无解析

第7题：

单选题
When the helm demands a 20°right rudder movement from an electro-hydraulic steering gear, which of the listed actions will be the FIRST action to happen when this rudder position is attained?（）
A

The six-way valve opens

B

The steering service pump motor is stopped

C

The follow-up gear takes the pump off stroke

D

The cylinder relief valves bypass oil to the suction side the pump


正确答案： D
解析： 暂无解析

第8题：

In an auxiliary diesel engine bypass type lubricating oil system, the main lube oil pump forces_______ .

A.all of the oil used by the engine through a filter

B.some of the oil used by the engine through a filter

C.some of the oil used by the engine through a centrifuge

D.all of the oil used by the engine through a centrifuge


正确答案：C

第9题：

单选题
Hydraulic control check value is generally used to （） in the marine hydraulic mechanism.
A

control the back pressure of return oil

B

lock the oil lines under some conditions

C

change the direction of oil flow

D

act as relief valve


正确答案： B
解析： 暂无解析

第10题：

单选题
What type of valve is used to direct the flow of hydraulic fluid?（）
A

Relief valve

B

Direction control valve

C

Stop valve

D

Pressure control valve


正确答案： D
解析： 暂无解析

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