Automobile Engineering in ME
The rigid suspension is beneficial when

It is desired to improve tyre to ground contact characteristics
It is desired to reduce the unsprung mass
Large changes in load make it necessary to have a large suspension stroke
It is desired to have more flexibility in design

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Automobile Engineering in ME
The function of a proportioning control valve (PCV) in a brake system is to

Ensure that equal pressure is supplied to the front and rear brakes throughout every braking operation
Cause less brake fluid pressure to act on the front brakes than on the rear brakes when the fluid pressure exceeds a predetermined level
Reduce the brake fluid pressure when the brakes approach their lockup point
Cause less brake fluid pressure to act on the rear brakes than on the front brakes when the fluid pressure exceeds a predetermined level

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

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