INTERNAL COMBUSTION ENGINES QUIZ

In a four stroke cycle petrol engine, the expansion

Starts at 30° after top dead center and ends at 50° after bottom dead center

Starts at top dead center and ends at bottom dead center

Starts at 30° before top dead center and ends at 50° before bottom dead center

May start and end anywhere

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YOUR ANSWER : ?

In case of gas turbines, the gaseous fuel consumption guarantees are based on

High heat value

Low heat value

Calorific value

Net calorific value

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The specific fuel consumption per B.P. hour for a petrol engine is about

0.25 kg

0.2 kg

0.3 kg

0.35 kg

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The actual volume of fresh charge admitted in 4-stroke petrol engine is

Equal to stroke volume

Less than stroke volume

More than stroke volume

Equal to stroke volume and clearance volume

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The air standard efficiency of an I.C. engine depends on

Speed of engine

Fuel used

None of these

Compression ratio

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A hydraulic ram is a device used to

Increase the pressure of water

To lift small quantity of water to a greater height when a large quantity of water is available at a smaller height

Store the energy of water

To lift water from deep wells

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Which of the following does not relate to a spark ignition engine?

Ignition coil

Carburettor

Fuel injector

Spark plug

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In diesel engine, the compression ratio in comparison to expansion ratio is

Variable

Less

More

Same

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The theoretically correct mixture of air and petrol is

20 : 1

15 : 1

25 : 1

10 : 1

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In order to mix air and petrol in the required proportion and to supply it to the engine during suction stroke, then ___ is employed.

Injector

None of the listed here

Carburettor

Fuel pump

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YOUR ANSWER : ?

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