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In a diesel engine cooling system, the high temperature alar

题目
单选题
In a diesel engine cooling system, the high temperature alarm contact maker will be activated on excessively high water discharge temperature from the （）
A

raw water pump discharge

B

expansion tank outlet

C

cooling water heat exchanger

D

outlet engine jacket water outlet

参考答案和解析
正确答案： A
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：

单选题
A marine diesel engine is started by（）
A

supplying high pressure oil into a hydraulic motor

B

supplying high temperature air into the cylinder

C

supplying high pressure air into the cylinder

D

electrical igniting


正确答案： C
解析： 暂无解析

第3题：

High firing pressures and low exhaust temperature in a diesel engine may resultfrom( ).

A.decreased piston to cylinder head clearance

B.increased exhaust system back pressure

C.early fuel injection timing

D.low scavenge air temperature


正确答案：C
解析：decrease：减少;clearance：间隙
译文：喷油定时过早会引起柴油机爆炸压力偏高、排温偏低。

第4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5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
If a diesel engine were running at 20% overload with a smoky exhaust, you should（）
A

stop the engine immediately to prevent damage

B

increase lube oil pressure

C

slow the engine allowing it to gradually cool

D

decrease the cooling water it temperature to the water jacket


正确答案： A
解析： 暂无解析

第8题：

A two stroke diesel engine exhaust temperature will be lower than a four stroke diesel engine of the same displacement because the _____. ① MEP is lower and the scavenging air is cooling the exhaust gases ② valve overlap in a four stroke

A.①

B.②

C.① and ②

D.Neither ① nor ② is correct


正确答案：A

第9题：

单选题
If the coolant temperature of a closed cooling water system for a diesel engine gradually increases, the trouble usually is （）
A

a broken shaft on the freshwater pump

B

an excessive accumulation of scale exchanger

C

an incorrect thermostatic element operating range

D

lube oil in the cooling water


正确答案： D
解析： 暂无解析

第10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

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