违法和不良信息举报 联系客服
免费注册 登录

Maximum horsepower of a diesel engine is attained （）.

题目
单选题
Maximum horsepower of a diesel engine is attained （）.
A

when the engine RPM is pulled down by overload

B

at rated engine RPM

C

at 95 % of rated engine RPM

D

at 95 % of a properly adjusted governor RPM with the engine under full load

如果没有搜索结果或未解决您的问题，请直接 联系老师 获取答案。
相似问题和答案

第1题：

Any increase in the exhaust back pressure of a four-stroke/cycle diesel enginewill( ).

A.reduce engine horsepower output

B.aid in silencing the exhaust noise

C.increase the mean effective pressure

D.contribute to effective cylinder scavenging


正确答案：A
解析：aid：援助;contribute to：对…起作用
译文：四冲程柴油机排气背压升高将会减少发动机的功率输出。

第2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3题：

Which of the following reasons represents why the designed compression ratio of a gasoline engine is lower than that of a diesel engine?

A.compression must be low for effective spark ignition

B.compression must be low for required horsepower and torque generation

C.compression must be low to prevent pre-ignition

D.compression must be low to have effective pre-ignition


正确答案：C

第4题：

单选题
An over-speed trip stops a diesel engine when the engine （）
A

runs out of fuel

B

has low lubricating oil pressure

C

exceeds a set maximum speed

D

has high cooling water temperature


正确答案： B
解析： 暂无解析

第5题：

单选题
Mechanical lubricators for diesel engine cylinders are usually small reciprocating pumps which are （）.
A

operated manually once an hour

B

operated until the engine has started

C

placed into operation only at maximum load

D

adjustable to meet lubrication requirements


正确答案： B
解析： 暂无解析

第6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7题：

单选题
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
A

Speed limiting governor

B

Over-speed governor

C

Over-speed trip

D

Over-speed relay


正确答案： D
解析： 暂无解析

第8题：

A diesel engine experiences a sudden loss in speed, accompanied by black exhaust smoke, with the fuel rack at maximum, and speed remaining below normal .the probable ___.

A.engine overload

B.leaky valves

C.stuck or broken piston rings

D.low air injection pressure


正确答案：A

第9题：

单选题
A supercharged diesel engine when compared to a similar naturally aspirated diesel engine, will develop an increase in （）
A

ignition lag

B

engine horsepower

C

lube oil system pressure

D

specific fuel consumption


正确答案： D
解析： 暂无解析

第10题：

单选题
Starting a large low-speed propulsion diesel engine on diesel fuel during cold weather conditions, will be made easier by （）
A

increasing the quantity of starting air

B

increasing the lube oil pressure

C

heating the engine fuel supply

D

heating the engine coolant


正确答案： A
解析： 暂无解析

更多相关问题
相关内容