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In an operating diesel engine, which of the following condit

题目
单选题
In an operating diesel engine, which of the following condition is an indication of a leaking air starting valve?（）
A

noise coming from that air starting valve

B

continuous operation of the starting air compressor

C

zero air pressure in the air starting system

D

overheated starting air pipe to the cylinder head

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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
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
A

Impeller

B

Compressor

C

After-cooler

D

Exhaust differ


正确答案： C
解析： 暂无解析

第3题：

Before engaging the turning gear and turning the diesel engine, which of the following operation should be done except______.

A.open the indicator cocks

B.supply some CYL.Oil to cylinder liner wall with lubricator (only for two stoke diesel engine)

C.put the fuel handle in the "stop" position

D.pump up the air bottle


正确答案：D

第4题：

单选题
When the opening pressure of a diesel engine fuel injector is greater than that specified by the engine manufacturer, which of the following problems can be expected?（）
A

Quantity of fuel injected tends to be decreased

B

Quantity of fuel injected will always be increased

C

Start of injection tends to be advanced

D

Duration of injection will always greater


正确答案： A
解析： 暂无解析

第5题：

单选题
Which of the following conditions could contribute to the cracking of a diesel engine cylinder head?（）
A

Leaking seal ring

B

Insufficient heat transfer from the exhaust valves

C

Block cooling water passages to the head

D

Excessive scavenging air provided to the engine


正确答案： C
解析： 暂无解析

第6题：

In an operating diesel engine, which of the following conditions is an indication of a leaking air starting valve?

A.Noise coming from that air starting valve

B.Continuous operation of the starting air compressor

C.Zero air pressure in the air starting system

D.Overheated starting air pipe to the cylinder head


正确答案：D

第7题：

单选题
Black smoke exhausting from an operating diesel engine is an indication of poor combustion which may be caused by （）
A

water in the fuel

B

insufficient fuel for combustion

C

clogged air intake passages

D

burning lubricating oil


正确答案： B
解析： 暂无解析

第8题：

Which of the following conditions could contribute to the cracking of a diesel engine cylinder head?

A.Leaking seal ring

B.Insufficient heat transfer from the exhaust valves

C.Blocked cooling water passages to the head

D.Excessive scavenging air provided to the engine


正确答案：C

第9题：

单选题
Which of the following operating conditions can occur when shims are removed from the joint between the foot of a marine type diesel engine connecting rod and the bearing box?（）
A

Decreased connecting rod bearing clearance

B

Increased connecting rod bearing clearance

C

Decreased compression ratio

D

Increased compression ratio


正确答案： C
解析： 暂无解析

第10题：

单选题
Which of the listed diesel engine operating conditions should be checked immediately after any diesel engine is started?（）
A

Exhaust temperature

B

Lube oil level

C

Lube oil pressure

D

Water level in the expansion tank


正确答案： C
解析： 暂无解析

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