Automobile Engineering in ME
The process of supplying the intake air to the engine cylinder at a pressure greater than the pressure of the surrounding atmosphere is known as

Scavenging
Supercharging
Detonation
Auto ignition

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Automobile Engineering in ME
It is necessary to maintain the valve clearances as they

Reduce the resistance to sliding that occurs between the cam and the tappet
Make the crankshaft turn smoothly
Increase the speed at which the valves move up and down
Allow for lengthening of the valves owing to the heat of combustion

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Automobile Engineering in ME
In a ventilated disc brake

Disc contains radial vanes between its rubbing surfaces for optimum cooling performance
A duct directs air towards the caliper for cooling while the vehicle is moving
Disc contains many small holes for optimum cooling performance
Caliper is covered with cooling fins

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