When the air charge contacts with the cylinders and pistons

题目
单选题
When the air charge contacts with the cylinders and pistons and mixes with the residual gases, it will()
A

increase in temperature

B

lose its energy partly

C

expand and do work

D

begin to be compressed

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相似问题和答案

第1题:

单选题
An advantage of aluminum pistons, when compared to cast iron pistons is ().
A

greater high temperature strength

B

better heat conductivity

C

greater weight per cubic inch

D

increased resistance to wear


正确答案: A
解析: 暂无解析

第2题:

单选题
The ignition of the fuel in diesel engine is caused by the () of compression of the air previously admitted into the cylinders.
A

vacuum pressure

B

specific gravity

C

heat

D

viscosity


正确答案: B
解析: 暂无解析

第3题:

Exhaust gases are generally removed from the cylinders of a two-stroke/cycle diesel engine by

A.natural aspiration

B.masked intake valves

C.air ceils

D.scavenging air


正确答案:D

第4题:

单选题
CO2 cylinders equipped with pressure actuated discharge heads will discharge automatically when().
A

the discharge valve is open

B

the control box glass is broken

C

pressure from the control cylinders is detected

D

the control cylinders have been completely discharged


正确答案: D
解析: 暂无解析

第5题:

单选题
The power developed by a large slow-speed main propulsion diesel engine is dependent upon the ()
A

quantity of air it takes in and retains in the cylinders during a given time period

B

proportion of trapped air that is utilized in the combustion process

C

thermodynamic efficiency of the engine cycle

D

all of the above


正确答案: B
解析: 暂无解析

第6题:

单选题
Which of the following statements is not true concerning symptom of a fire in the scavenge air box?()
A

an increase in the exhaust temperature of the affected cylinder

B

the turbocharger may surge

C

the explosion pressure in all cylinders will rise violently

D

smoke from the turbocharger air inlet filter will be seen


正确答案: D
解析: 暂无解析

第7题:

单选题
Air in the fuel lines of a diesel engine can cause ()
A

ignition failure

B

oxygen corrosion of the fuel lines

C

the pistons to seize

D

blue smoke


正确答案: B
解析: 暂无解析

第8题:

单选题
Exhaust gases are generally removed from the cylinders of a two-stroke/cycle diesel engine by()
A

natural aspiration

B

masked intake valves

C

air cells

D

scavenging air


正确答案: B
解析: 暂无解析

第9题:

单选题
The pressurized air is usually cooled to increase the charge air ().
A

viscosity

B

density

C

velocity

D

electricity


正确答案: A
解析: 暂无解析

第10题:

单选题
The air supplied to the cylinders by a turbocharger is often reduced in volume by a/an ()
A

air compressor

B

diffuser

C

after-cooler

D

ventilator


正确答案: C
解析: 暂无解析

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