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

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

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

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

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Automobile Engineering in ME
The function of a first compression ring (top ring) is that it

Maintains a seal and prevents escape of burned gases and loss of pressure in the combustion chamber
Creates swirl
Increases the combustion temperature
Maintains a seal and prevents the fuel leakage

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