Automobile Engineering in ME
Wheel base of a vehicle is the

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

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Automobile Engineering in ME
An imbalance wheel during vehicle operation

Deflects in the vehicle's longitudinal direction
Bounces vertically or deflects from side to side (as seen from front or rear)
Creates a standing wave
Makes large noise when its heavy point hits the road surface

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Automobile Engineering in ME
The function of a radiator fan in the cooling system is that

It is turned by wind force as the vehicle moves forward, and its rotation drives the water pump
It cools the engine by blowing air onto the cylinder block
It blows air through the radiator when necessary
It draws heat out of the engine compartment

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