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

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

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Automobile Engineering in ME
A worm gear is used as the pinion for the rack and pinion type of steering gearbox, because it

Reduces the amount of kickback for large steering angles
Improves steering comfort when steering wheel is turned to effect small changes in the direction of forward motion
Makes the steering more responsive
Allows the steering wheel to be turned by a greater amount when steering

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Automobile Engineering in ME
The starting system includes

A battery, a starter, and a distributor
A distributor, a starter, and an ignition switch
A battery, a starter, and an ignition switch
A battery, a distributor, and an ignition switch

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