Automobile Engineering in ME
The purpose of transmission in an automobile is

To vary the speed of automobile
To vary the power of automobile
None of these
To vary the torque at the wheels

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Automobile Engineering in ME
When the front wheels of a vehicle are locked during braking, then

Stopping distance becomes extremely long
Driver loses control over the steering, and the vehicle continues moving in its current direction
Rear tyres skid across the road surface, and the vehicle spins around
Front tyres skid across the road surface, and the vehicle spins around

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Automobile Engineering in ME
The condition that causes vapour locking in a brake system is

An excessively high engine speed on a downhill road
Overheating of the fluid due to frequent brake application
Overcooling of the brakes during high speed driving
Keeping the vehicle without use for an extended period

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