Automobile Engineering in ME
The process of supplying the intake air to the engine cylinder at a pressure greater than the pressure of the surrounding atmosphere is known as

Supercharging
Auto ignition
Detonation
Scavenging

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Automobile Engineering in ME
The crankcase dilution means

Dilution of fuel in the crankcase
Dilution of lubrication oil by fuel in the crankcase D. Dilution
Dilution of oil by water in the crankcase
Dilution of mixture passing through crankcase in two stroke engines

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