海船船员考试

单选题High diesel engine cooling water temperatures can be caused by （）.A air in the cooling systemB an overhauled water pumpC correct amount of coolantD no air in the cooling system

题目
单选题
High diesel engine cooling water temperatures can be caused by （）.
A

air in the cooling system

B

an overhauled water pump

C

correct amount of coolant

D

no air in the cooling system

参考答案和解析
正确答案： C
解析： 暂无解析
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相似问题和答案

第1题：

Which of the following factors tends to increase scale formation on the saltwater side of a heat exchanger used in a diesel engine cooling water system?

A.Baffle plates that have been bent during prior removal

B.Leaks m the cooler tube nest

C.Operating the engine while maintaining a high sea water outlet temperature

D.A punctured sea water strainer supplying cooling water to the heat exchanger


正确答案：C

第2题：

Prolonged operation of a diesel engine with a closed cooling water system, at lower than normal designed operating temperatures can ______.

A.increase power output

B.decrease lube oil viscosity

C.eliminate fuel knock

D.cause sulfuric acid formation


正确答案：D

第3题：

A crack in a cylinder liner can be caused by

A.worn piston rings

B.installation of undersized sealing rings

C.operating the engine at low loads

D.restricted cooling water passages


正确答案：D

第4题：

单选题
One of the purposes for water cooling the exhaust manifold in marine diesel engine is to （）
A

reduce lube oil temperature

B

raise exhaust temperature reduce

C

excessive heating of engine room

D

reduce load on cooling water pump


正确答案： C
解析： 暂无解析

第5题：

单选题
Which of the following factors tends to increase scale formation on the saltwater side of a heat exchanger used in a diesel engine cooling water system?（）
A

Baffle plates that have been bent during prior removal

B

Leaks in the cooler tube nest

C

Operating the engine while maintaining a high sea water outlet temperature

D

A punctured sea water strainer supplying cooling water to the heat exchanger


正确答案： C
解析： 暂无解析

第6题：

High diesel engine cooling water temperatures can be caused by ______.

A.air in the cooling system

B.an overhauled water pump

C.correct amount of coolant

D.no air in the cooling system


正确答案：A

第7题：

单选题
During the running of the diesel engine, if the supply of cooling water is interrupted or the temperature of cooling water out of the cylinder is too high, the duty engineer should （）
A

notify the duty officer, reduce the engine speed, take some measures to remove failures

B

notify the duty officer and stop the engine immediately, find the cause and remove failures

C

notify the C/E

D

notify the captain


正确答案： A
解析： 暂无解析

第8题：

Low compression in a diesel engine could be caused by

A.worn or broken cylinder liner sealing rings

B.high cooling water temperature

C.worn or broken piston rings

D.low fuel oil pressure


正确答案：C

第9题：

单选题
An over-speed trip stops a diesel engine when the engine （）
A

runs out of fuel

B

has low lubricating oil pressure

C

exceeds a set maximum speed

D

has high cooling water temperature


正确答案： B
解析： 暂无解析

第10题：

单选题
The operating diesel generators will have their exhaust temperatures, cooling water and lubricating oil temperatures and pressures （） in much the same way as for the main engine.
A

to be kept

B

logged

C

changed

D

has remained


正确答案： B
解析： 暂无解析

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