海船船员考试

单选题According to the principle of two stroke diesel engine, what is the number of its efficient work stroke per revolution?（）A 1/2B 1C 2D 3

题目
单选题
According to the principle of two stroke diesel engine, what is the number of its efficient work stroke per revolution?（）
A

1/2

B

1

C

2

D

3

如果没有搜索结果，请直接 联系老师 获取答案。
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
The camshaft drive is designed to maintain proper camshaft speed relative to crankshaft speedIn maintaining this relationship, the camshaft drive causes the camshaft to rotate at（）
A

one half crankshaft speed in a two-stroke cycle diesel engine

B

crankshaft speed in a two-stroke cycle diesel engine

C

two times crankshaft speed in a two-stroke cycle diesel engine

D

one-fourth times crankshaft speed in a four-stroke cycle diesel engine


正确答案： A
解析： 暂无解析

第2题：

单选题
When an air started, four-stroke/cycle diesel engine is being cranked, the starting air is admitted to each cylinder during what would normally be the（）
A

intake stroke

B

compression stroke

C

power stroke

D

exhaust stroke


正确答案： A
解析： 暂无解析

第3题：

If all other conditions such as bore, stroke, speed, and mean effective pressures are equal, a two stroke/cycle diesel engine will develop approximately

A.the same indicated horsepower as a four-stroke/cycle engine

B.twice the indicated horsepower as a four-stroke/cycle engine

C.one half the indicated horsepower as a four-stroke/cycle engine

D.one power stroke for every two crankshaft revolutions


正确答案：B

第4题：

单选题
In the cylinder head of a two-stroke/cycle diesel engine, valves are used for（）
A

air intake

B

a fuel outlet

C

cooling water inlets

D

exhausting combustion gas


正确答案： D
解析： 暂无解析

第5题：

单选题
The size of the exhaust valve opening is （）
A

most critical in a four-stroke cycle diesel engine

B

most critical in a two-stroke/cycle diesel engine

C

most critical in a four-stroke/cycle diesel engine if it is turbocharged

D

of equal importance in a two-stroke/cycle diesel engine as in a four-stroke/cycle diesel engine


正确答案： A
解析： 暂无解析

第6题：

单选题
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) only is correct

B

(2) only is correct

C

both (1) and (2) are correct

D

Neither (1) or (2) are correct


正确答案： C
解析： 暂无解析

第7题：

单选题
According to the principle of four stroke diesel engine, what is the number of its efficient work stroke per revolution?（）
A

1/2

B

1

C

2

D

3


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
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
A

Exhaust and scavenging

B

Scavenging and compression

C

Ignition and expansion

D

Exhaust and compression


正确答案： A
解析： 暂无解析

第10题：

单选题
What color exhaust will be exhibited when a slow speed two-stroke/cycle main propulsion diesel engine, designed to operate on light and heavy fuel oil, is operated on insufficiently preheated heavy fuel oil?（）
A

White

B

Black

C

Blue

D

Clear


正确答案： B
解析： 暂无解析

更多相关问题
相关内容