Automobile Engineering in ME
A battery can be charged by

Adding sulphuric acid
Applying a voltage in the same direction to that of charging
Adding distilled water
Applying voltage in the reverse direction to that of charging

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Automobile Engineering in ME
The function of positive crankcase ventilation (PCV) system is that it

Returns blow by gases from the crankcase to the intake system
Feeds blow by gases to the exhaust manifold
Promotes combustion by creating a swirling movement in the air-fuel mixture
Mixes fuel with air

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