Automobile Engineering in ME
The purpose of a cylinder head gasket is to

Prevent the combustion gases from leaking from the joint between the cylinder block and the cylinder head
Removes impurities from cylinder head lubricating oil
Prevent engine oil from going into combustion chamber
None of these

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

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

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