海船船员考试

单选题An indication of a diesel engine air intake being partially clogged, is ().A low firing pressure and low exhaust temperaturesB low firing pressure and normal exhaust temperaturesC high firing pressure and low exhaust temperaturesD high firing pressure

题目
单选题
An indication of a diesel engine air intake being partially clogged, is ().
A

low firing pressure and low exhaust temperatures

B

low firing pressure and normal exhaust temperatures

C

high firing pressure and low exhaust temperatures

D

high firing pressure and high exhaust temperatures

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相似问题和答案

第1题:

How should you warm up a diesel engine that has not been run for some time?______.

A.Run it at minimum speed for a period of time

B.Run it at half speed for a period of time

C.Bring it to top speed immediately

D.Inject ether into the air intake


正确答案:B
在柴油机没有运行的时候该怎么给他暖机?半速运转一段时间。

第2题:

单选题
Intake air flow from a diesel engine turbocharger is directly proportional to engine()
A

exhaust gas pressure

B

exhaust gas temperature

C

speed

D

load


正确答案: D
解析: 暂无解析

第3题:

What is the function of the after-coolers installed in the diesel engine air intake system?

A.Decrease the air density

B.Increase the exhaust temperature

C.Decrease the lube oil temperature

D.Increase the air density


正确答案:D

第4题:

单选题
Diesel engine starting difficulties due to cold intake air temperatures, can be overcome by using a/an()
A

increase in starting air pressure

B

increase in lube oil viscosity

C

compression expansion device

D

jacket water heater


正确答案: A
解析: 暂无解析

第5题:

单选题
What is the best way of stopping an over-speeding diesel engine?()
A

Disconnect the battery cables from the starting motor

B

Drain the hydraulic fluid from the governor sump

C

Block the flow of cooling air to the radiator

D

Secure the fuel supply and block the air intake


正确答案: D
解析: 暂无解析

第6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7题:

单选题
Black smoke exhausting from an operating diesel engine is an indication of poor combustion which may be caused by ()
A

water in the fuel

B

insufficient fuel for combustion

C

clogged air intake passages

D

burning lubricating oil


正确答案: B
解析: 暂无解析

第8题:

In an operating diesel engine, which of the following conditions is an indication of a leaking air starting valve?

A.Noise coming from that air starting valve

B.Continuous operation of the starting air compressor

C.Zero air pressure in the air starting system

D.Overheated starting air pipe to the cylinder head


正确答案:D

第9题:

单选题
Poor combustion in a diesel engine can be caused by ().
A

high compression pressure

B

low intake air temperature

C

low exhaust pressure

D

high scavenge air temperature


正确答案: D
解析: 暂无解析

第10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

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