Question

Governer is used in automobiles to:
1. Decrease the variation of speed
2. Control δN/δt
3. Control δN
4. All of the above

Answer 1

Correct Answer - Option 3 : Control δN

Explanation:

The function of a governor is to maintain the speed of engine within specified limits ( or controls δN)  whenever there is a variation of load.

Speed of an engine varies in two ways

1. During each revolution or cyclic variation
2. Over a number of revolutions.

During each revolution or cyclic variation, the speed of the engine varies due to variation in output torque of the engine during a cycle and is regulated by a flywheel mounted on the shaft.

Over a number of revolution, the speed of the engine varies due to variation in load upon the engine and the speed is maintained by mounting a governor.