海船船员考试

单选题If an auxiliary diesel engine frequently stalls, the trouble may be caused by （）A low exhaust back pressureB air in the fuel systemC gasket blow-by or leakageD incorrect assembly of idler springs

题目
单选题
If an auxiliary diesel engine frequently stalls, the trouble may be caused by （）
A

low exhaust back pressure

B

air in the fuel system

C

gasket blow-by or leakage

D

incorrect assembly of idler springs

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相似问题和答案

第1题：

When using a fuel with a higher than normal sulfur content in an auxiliary four stroke diesel engine, you may

A.maintain higher than normal jacket water temperature

B.change the lube oil more frequently than normal

C.maintain a higher air-box temperature than normal

D.maintain a higher air-box pressure than normal


正确答案：B

第2题：

A bypass line provided around a waste heat auxiliary boiler in a diesel engine exhaust system, may be used to avoid boiler ______.

A.corrosion at low engine loads

B.erosion at high engine loads

C.overload at high engine loads

D.scaling at all exhaust temperatures


正确答案：A

第3题：

What should be prepared before disassembly of cylinder for main engine or auxiliary engine?


正确答案：Familiarized with operational manual, such as know with certainty the disassembly procedures, cut off oil and water, the operational procedure, test by oil and water after assembly; get knowledge of Assembly Crevice and Limited Crevice; count on necessary spares; check all necessary tools before working; be clear of duties for personal engaged in disassembly of cylinder; safety measures and safety working training are also vital.

第4题：

单选题
White smoke issuing from the exhaust of an auxiliary diesel engine valve opening （）
A

the engine is overloaded

B

the engine is cold

C

there is too much lube oil in the cylinders

D

the turbocharger is fouled


正确答案： D
解析： 暂无解析

第5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6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7题：

单选题
The marine diesel engine is a type of diesel engine used on ships The （） of its operation is not very difficult to understand.
A

principle

B

principal

C

cause

D

case


正确答案： D
解析： 暂无解析

第8题：

If an auxiliary diesel engine coolant temperature is higher than normal, but the thermostat is determined not to be defective, you would suspect a/an

A.cavitation erosion in the water jackets

B.excess corrosion inhibitor in the coolant

C.dirty jacket water cooler

D.defective turbocharger


正确答案：A

第9题：

单选题
Worn main bearing will cause the compression ratio of an auxiliary diesel engine to（）
A

increase

B

decrease

C

remain the same

D

increase on compression decrease on expansion


正确答案： D
解析： 暂无解析

第10题：

单选题
If the jacket water temperature in an auxiliary diesel engine cooling system is lower than normal, the probable cause is （）
A

air binding of the engine cooling system

B

a cracked water cooled exhaust manifold

C

blockage in the heat exchanger

D

faulty operation of the thermostat


正确答案： B
解析： 暂无解析

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