海船船员考试

单选题A diesel engine piston ring face is in direct contact with the （）.A top of the ring grooveB cylinder liner oil filmC bottom of the ring grooveD back of the ring groove

题目
单选题
A diesel engine piston ring face is in direct contact with the （）.
A

top of the ring groove

B

cylinder liner oil film

C

bottom of the ring groove

D

back of the ring groove

参考答案和解析
正确答案： B
解析： 暂无解析
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相似问题和答案

第1题：

In a diesel engine, when refitting piston rings you should______. I. check the ring gap at the smallest diameter of the cylinder II. remove carbon from the ring groove

A.I only

B.II only

C.both I and II

D.neither I nor II


正确答案：C

第2题：

单选题
Which of the listed conditions can cause a diesel engine to use too much lube oil?（）
A

Dirty lube oil filter

B

Too much piston ring wear

C

High lube oil viscosity

D

Low lube oil temperature


正确答案： D
解析： 暂无解析

第3题：

Which of the following statements represents the function of the compression rings installed at the top of a diesel Engine piston?

A.Control the amount of lube oil burned in the combustion chamber

B.Transmit heat from the piston to the cylinder liner

C.Prevent damage to ring groove inserts by acting as a heat dam

D.Dissipate combustion chamber gas pressure by channeling it through the ring gap


正确答案：B

第4题：

单选题
Improper cooling of a diesel engine cylinder liner due to the accumulation of scale deposits may cause （）.
A

low compression pressure

B

increased piston wear

C

increased cylinder lube oil consumption

D

poor contact between compression rings and liner


正确答案： B
解析： 暂无解析

第5题：

单选题
A condition contributing to diesel engine piston rings sticking in the ring grooves, is insufficient ring clearance at the ring（） Ⅰ.gap Ⅱ.side
A

Ⅰonly

B

Ⅱ only

C

both Ⅰ and Ⅱ

D

neither Ⅰ nor Ⅱ


正确答案： A
解析： 暂无解析

第6题：

单选题
In some diesel engine designs,（）the injection of cylinder oil is timed to impinge when the piston and only impinge on（）
A

is coming upward；cylinder ring belt

B

is going downward；piston ring belt

C

is coming upward；piston ring belt

D

is going downward；cylinder ring belt


正确答案： D
解析： 暂无解析

第7题：

单选题
In a diesel engine, when refitting piston rings you should （） Ⅰ.check the ring gap at the smallest diameter of the cylinder Ⅱ. Remove carbon from the ring groove
A

Ⅰ only

B

Ⅱ only

C

both Ⅰ and Ⅱ

D

neither Ⅰ nor Ⅱ


正确答案： D
解析： 暂无解析

第8题：

In a diesel engine, when refitting piston rings you should ①check the ring gap at the smallest diameter of the cylinder ②remove carbon from the ring groove

A.①

B.②

C.①②

D.neither ① nor ②


正确答案：C

第9题：

单选题
In a diesel engine, excessive cylinder liner wear will cause （） (1) increased blow-by (2) wear between the piston ring and groove
A

(1) only is correct

B

(2) only is correct

C

both (1) and (2) are correct

D

neither (1) or (2) axe correct


正确答案： B
解析： 暂无解析

第10题：

单选题
Which of the following statements represents the function of the compression rings installed at the top of a diesel Engine piston?（）
A

Control the amount of lube oil burned in the combustion chamber

B

Transmit heat from the piston to the cylinder liner

C

Prevent damage to ring groove inserts by acting as a heat dam

D

Dissipate combustion chamber gas pressure by channeling it through the ring gap


正确答案： D
解析： 暂无解析

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