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

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

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Automobile Engineering in ME
The main task of a battery in automobiles is to

Supply electricity to the vehicle's electrical system at all times while the engine is running
Supply a large amount of power to turn the starter motor when the engine is being started
Act as a reservoir or stabilizer of electricity
Supply electricity to the alternator

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