INTERNAL COMBUSTION ENGINES QUIZ

Exhaust valve closing after top dead center

Inlet valve opening before top dead center

Inlet valve closing after bottom dead center

Inlet valve closing before bottom dead center

Centrifugal pump

Natural aspirator

Movement of engine piston

Supercharger

Decrease

Increase

None of these

Remain same

None of these

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

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

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

Increase

Have no effect on

Decrease

None of the listed here

Single cylinder diesel engine

Four stroke engine

Single cylinder petrol engine

Multi cylinder engine

Supercharging reduces knocking in diesel engines

Supercharging at high altitudes is essential

Supercharging results in fuel economy

There can be limited supercharging in petrol engines because of detonation

50

100

0

120

Carburetion

Atomization

Ionization

Vaporisation

High efficiency engines

4-stroke cycle engines

Aeroplane engines

2-stroke cycle engines