A diesel engine which is rated for normal operation at a cra

题目
单选题
A diesel engine which is rated for normal operation at a crankshaft speed of 800 RPM, is commonly classed as a ().
A

slow-speed diesel

B

medium-speed diesel

C

high-speed diesel

D

constant-speed diesel

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相似问题和答案

第1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2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3题:

Before engaging the turning gear and turning the diesel engine, which of the following operation should be done except______.

A.open the indicator cocks

B.supply some CYL.Oil to cylinder liner wall with lubricator (only for two stoke diesel engine)

C.put the fuel handle in the "stop" position

D.pump up the air bottle


正确答案:D

第4题:

单选题
What determines the number of events occurring in a cycle of operation in an internal combustion engine?()
A

Crankshaft revolution

B

Type of engine (diesel or gasoline)

C

Distance a piston travels during a stroke

D

Number of pistons


正确答案: B
解析: 暂无解析

第5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

第6题:

单选题
As a heat engine,() energy is the source of power by which the diesel engine can be operated.
A

electric

B

heat

C

mechanical

D

exhaust


正确答案: D
解析: 暂无解析

第7题:

单选题
Before engaging the turning gear and turning the diesel engine, which of the following operation should be done except ()
A

open the indicator cocks

B

supply some LO to cylinder liner wall with lubricator

C

put the fuel handle in the stop position

D

pump up the air bottle


正确答案: C
解析: 暂无解析

第8题:

Prolonged operation of a diesel engine with a closed cooling water system, at lower than normal designed operating temperatures can ______.

A.increase power output

B.decrease lube oil viscosity

C.eliminate fuel knock

D.cause sulfuric acid formation


正确答案:D

第9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10题:

单选题
If a camshaft-less engine has a normal injection pressure at rated speed, the injection pressure will be at slow speed()
A

too low

B

a little lower

C

a little higher

D

exactly the same


正确答案: D
解析: 暂无解析

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