Automobile Engineering in ME
The aluminium alloy is used in cylinder blocks because

Material cost is low
The piston is also made of aluminium alloy
It is lighter and has good heat dissipation characteristics
It does not require any cylinder liners

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

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

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Automobile Engineering in ME
The auto ignition in a spark ignition engine means

Ignition of the charge before the passage of flame front
Automatic ignition of the charge at the end of compression
Ignition induced by the passage of a spark
Ignition induced to supplement the process of normal combustion

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