Question

Which of the following options denote the reason for over heating in case of a generator?
1. Overloading of the generator
2. Increased apparent power in the generator
3. Decreased current in the generator
4. Failure of insulation

Answer 1

Correct Answer - Option 1 : Overloading of the generator

Concept:

Under the condition of over-loading i.e., when the generator is overloaded the current demand from the generator increases.

When current supplied by the generator increases over its rated value the copper losses occurring in the windings of armature and field also increase.

This copper loss will dissipate in the form of heat into the winding resistances which will cause the generator to be overheated.

Therefore option '1' is correct