INTERNAL COMBUSTION ENGINES QUIZ

750 rpm

3000 rpm

Any value independent of engine speed

1500 rpm

Excessive turbulence which removes most of the insulating gas boundary layer from the cylinder walls

High intensity of knock causes crankshaft vibration and the engine runs rough

None of these

Increase in the rate of heat transfer, there is a reduction in the power output and efficiency of the engine

Petrol only

A mixture of petrol and air

None of these

Air only

Higher

Lower

Same

None of these

Air used for forcing burnt gases out of engine's cylinder during the exhaust period

Burnt air containing products of combustion

Forced air for cooling cylinder

Air used for combustion sent under pressure

Best quality fuel is used

Cannot work as it is impossible

Flywheel size is proper

It is properly designed

Directly proportional to its (distance)2 from the centre

Directly proportional to its distance from the centre

Inversely proportional to its (distance)2 from the centre

Inversely proportional to its distance from the centre

Injector

Fuel pump

Governor

Carburettor

None of these

Highly ignitable

More difficult to ignite

Less difficult to ignite

Low heat value of oil

Net calorific value of oil

Calorific value of fuel

High heat value of oil