Automobile Engineering in ME
The heat transfer from coolant to air in the radiator of an automobile engine takes place by

Radiation only
Convection and radiation
Conduction, convection and radiation
Convention only

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Automobile Engineering in ME
The order in which effort applied to the steering wheel is transferred to the front wheel is

Steering wheel, steering gearbox, steering shaft, tie rod, steering knuckle, front wheels
Steering wheel, steering shaft, steering gearbox, tie rod, steering knuckle, front wheels
Steering wheel, tie rod, steering gearbox, steering shaft, steering knuckle, front wheels
Steering wheel, steering shaft, steering gearbox, steering knuckle, tie rod, front wheels

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Automobile Engineering in ME
The drive-shafts are connected to the differential and wheel hubs through universal joints because the universal joints

None of these
Absorb any difference in speed between the left and right wheels when the vehicle is turning
Absorb the vibrations transferred from the surface of the road
Compensate for variations in the relative positions of the differential and the wheels which result from bumpy road surfaces or other similar driving conditions.

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