Automobile Engineering in ME
The rolling resistance is because of the friction between the

Wheel rim and tyre
None of the listed here
Tyre and the road surface
Wheel rim and road surface

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

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Automobile Engineering in ME
Wheel base of a vehicle is the

Distance between the centres of the front tyres
Distance between the centres of the rear tyres
Extreme length of the vehicle
Distance between the centres of the front and rear wheels

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