INTERNAL COMBUSTION ENGINES QUIZ

The operation of forcing additional air under pressure in the engine cylinder is known as

Pre-ignition

Turbulence

Scavenging

Supercharging

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If the ratios of all the corresponding linear dimensions are equal, then the model and the prototype are said to have

Kinematic similarity

None of these

Geometric similarity

Dynamic similarity

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Air fuel ratio at which a petrol engine cannot work is

0.41736111111111

0.62569444444444

20 : 1 and less

0.33402777777778

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For maximum power generation, the air fuel ratio for a petrol engine for vehicles, is of the order of

0.62569444444444

0.37569444444444

0.75069444444444

0.50069444444444

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Which of the following statement is correct regarding normal cetane?

It is a standard fuel used for knock rating of diesel engines

It has long carbon chain structure

All of these

Its chemical name is normal hexadecane

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In a petrol engine, the fuel supplied to the engine cylinder is mixed with required quantity of air and the mixture is ignited with a

Fuel injector

Fuel pump

Spark plug

None of these

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The maximum temperature in the I.C. engine cylinder is of the order of

500-1000Â°C

1500-2000Â°C

1000-1500Â°C

2000-2500Â°C

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In compression ignition engines, swirl denotes a

Haphazard motion of the gases in the chamber

None of the listed here

Rotary motion of the gases in the chamber

Radial motion of the gases in the chamber

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Diesel as compared to petrol is

More difficult to ignite

Less difficult to ignite

None of these

Highly ignitable

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When crude oil is heated, then which of the following hydrocarbon is given off first?

Gasoline

Natural gas

Kerosene

Paraffin

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