Automobile Engineering in ME
The purpose of a thermostat in an engine cooling system is to

Pressurise the system to raise the boiling point
Prevent the coolant from boiling
Indicate the coolant temperature
Allow the engine to warm up quickly

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

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

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Automobile Engineering in ME
The ball joints are used on the tie rod ends, because they

Reduce the amount of noise generated
Improve the force transmission speed
Can deal with movement of the suspension both vertically and in other directions
Reduce the amount of sliding resistance

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