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

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

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Automobile Engineering in ME
The purpose of a balancer shaft is to

Reduce vibrations caused by the crankshaft rotation
Balance the timing in the movement of the two groups of pistons
Adjusts the timing of the intake and exhaust valve openings
Increase inertia force of the rotating crankshaft

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