Automobile Engineering in ME
An imbalance wheel during vehicle operation

Makes large noise when its heavy point hits the road surface
Deflects in the vehicle's longitudinal direction
Creates a standing wave
Bounces vertically or deflects from side to side (as seen from front or rear)

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Automobile Engineering in ME
The main task of a battery in automobiles is to

Supply a large amount of power to turn the starter motor when the engine is being started
Supply electricity to the vehicle's electrical system at all times while the engine is running
Supply electricity to the alternator
Act as a reservoir or stabilizer of electricity

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Automobile Engineering in ME
In a ventilated disc brake

Caliper is covered with cooling fins
Disc contains many small holes for optimum cooling performance
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

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