Automobile Engineering in ME
The correct way to rectify an imbalanced wheel is to

Attach appropriate weights to the wheel at appropriate positions
Rotate the tyres
Adjust the damper spring tension
Adjust the tyre pressure

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Automobile Engineering in ME
In a ventilated disc brake

A duct directs air towards the caliper for cooling while the vehicle is moving
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

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Automobile Engineering in ME
The main function of a master cylinder is to

Boost the force applied to brake pedal
Adjust the extent of brake pedal free play
Ensure that all the wheel brakes are supplied with the same amount of fluid pressure
Convert brake pedal force into hydraulic pressure

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