海船船员考试

单选题The air supplied to the cylinders by a turbocharger is often reduced in volume by a/an ()A air compressorB diffuserC after-coolerD ventilator

题目
单选题
The air supplied to the cylinders by a turbocharger is often reduced in volume by a/an ()
A

air compressor

B

diffuser

C

after-cooler

D

ventilator

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相似问题和答案

第1题:

Which of the following problems should be taken when cleaning the air filter on a diesel engine equipped with a turbocharger? .

A.Reduce engine speed to idle before removing the filter

B.Soak the dirty filter in kerosene only

C.Blow out the air inlet with compressed air

D.Cover the air inlet after removing the filter


正确答案:D

第2题:

单选题
Intake air flow from a diesel engine turbocharger is directly proportional to engine()
A

exhaust gas pressure

B

exhaust gas temperature

C

speed

D

load


正确答案: D
解析: 暂无解析

第3题:

Exhaust gases are generally removed from the cylinders of a two-stroke/cycle diesel engine by

A.natural aspiration

B.masked intake valves

C.air ceils

D.scavenging air


正确答案:D

第4题:

单选题
When used in conjunction with a turbocharger, the main function of an after-cooler is to ()
A

increase the density of the cylinder air charge

B

prevent turbocharger overheating

C

liminate the need for a pre-cooler

D

remove moisture from air compressed by the turbocharger


正确答案: B
解析: 暂无解析

第5题:

单选题
The ignition of the fuel in diesel engine is caused by the () of compression of the air previously admitted into the cylinders.
A

vacuum pressure

B

specific gravity

C

heat

D

viscosity


正确答案: B
解析: 暂无解析

第6题:

单选题
Exhaust gases are generally removed from the cylinders of a two-stroke/cycle diesel engine by()
A

natural aspiration

B

masked intake valves

C

air cells

D

scavenging air


正确答案: B
解析: 暂无解析

第7题:

单选题
Which of the following statements is not true concerning symptom of a fire in the scavenge air box?()
A

an increase in the exhaust temperature of the affected cylinder

B

the turbocharger may surge

C

the explosion pressure in all cylinders will rise violently

D

smoke from the turbocharger air inlet filter will be seen


正确答案: D
解析: 暂无解析

第8题:

A sudden power loss from a turbocharged and after-cooled diesel engine is an indication of a/an

A.turbocharger malfunction or failure

B.crankcase exhauster overload

C.overload on the intercooler

D.obstruction in the engine cylinders


正确答案:A

第9题:

单选题
In a turbocharger, inlet air velocity is increased in the().
A

inlet nozzle ring

B

stationary diffuser passages

C

compressor outlet volute

D

rotating impeller vanes


正确答案: D
解析: 暂无解析

第10题:

单选题
Fuel is not supplied to the corresponding cylinders due to ().
A

a failure of the motor

B

a failure of lubricator

C

a failure of cylinder

D

a failure of fuel pump


正确答案: A
解析: 暂无解析

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