海船船员考试

单选题Insufficient end clearance on newly fitted piston rings in a diesel enginewill cause the rings to（）A jam in the most worn part of the cylinder when the rings expandB break in the most worn part of the cylinder when the rings expandC wear eccentrically

题目
单选题
Insufficient end clearance on newly fitted piston rings in a diesel enginewill cause the rings to（）
A

jam in the most worn part of the cylinder when the rings expand

B

break in the most worn part of the cylinder when the rings expand

C

wear eccentrically on the side opposite the end gap

D

overheat and jam at the top center on the combustion stroke

参考答案和解析
正确答案： A
解析： 暂无解析
如果没有搜索结果，请直接 联系老师 获取答案。
相似问题和答案

第1题：

单选题
In order to keep excess oil from the intake ports in two-stroke/cycle diesel engines, （）
A

wide compression rings are used

B

oil rings are located above the piston

C

chromium plating is used on all piston rings

D

oil rings are located near the bottom of the piston skirt


正确答案： C
解析： 暂无解析

第2题：

单选题
Improperly fitted piston rings in a diesel engine can cause（）
A

excessive lube oil consumption

B

lower than normal lube oil temperature

C

higher than normal exhaust back pressure

D

excessive crankshaft end play


正确答案： D
解析： 暂无解析

第3题：

(piston area)×(piston stroke)×(numbers of the cylinders)=engine( ).

A.brake horsepower

B.displacement

C.cylinder volume

D.cylinder clearance


正确答案：B
解析：brake：制动;displacement：排量，位移;clearance：间隙
译文： 活塞面积×活塞冲程×气缸数=发动机排量

第4题：

单选题
One end of a cylinder for a medium or high-speed diesel engine is sealed by the piston and rings, the other end is sealed by the （）
A

crankcase

B

cylinder head

C

valve cover

D

engine frame


正确答案： D
解析： 暂无解析

第5题：

单选题
In a medium speed diesel engine, a trunk type piston may be cooled by（） Ⅰ.oil circulation though passages in the piston crown Ⅱ.heat transfer through piston rings and liner wall
A

Ⅰ only

B

Ⅱ only

C

either Ⅰ or Ⅱ

D

neither Ⅰ or Ⅱ


正确答案： D
解析： 暂无解析

第6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7题：

单选题
(Piston area)X(Piston stroke)K(numbers of the cylinders)=engine（）
A

brake horsepower

B

displacement

C

cylinder volume

D

cylinder clearance


正确答案： B
解析： 暂无解析

第8题：

单选题
If the piston groove drain holes for the oil control rings become clogged, which of the following is likely to occur?（）
A

The oil control rings will seal improperly and wear rapidly

B

The piston will overheat due to insufficient lubrication

C

Excessive oil will remain on the cylinder wall

D

Light brown smoke will emanate from the engine exhaust


正确答案： B
解析： 暂无解析

第9题：

单选题
Before replacing a piston you should check that all rings are （）.
A

free

B

fastened

C

broken

D

stuck


正确答案： C
解析： 暂无解析

第10题：

单选题
The function of the piston compression rings used in a diesel engine is to （）
A

seal the space between the piston and liner

B

transmit heat from the piston to the cylinder liner

C

reduce the amount of combustion gas blow-by

D

all of the above


正确答案： A
解析： 暂无解析

更多相关问题
相关内容