Question

While finding the parameters for an alternator, its voltage regulation is found to be negative. Then the load connected to it must be __________

(a) capacitive nature

(b) inductive nature

(c) resistive nature

(d) can not be judged based on voltage regulation

The question was asked in an interview.

This interesting question is from Two Reaction Theory of Salient Pole Machines topic in section Synchronous Machines of Electrical Machines

Answer 1

Correct answer is (a) capacitive nature

The explanation is: The given voltage regulation is mentioned as negative. So it must have a load which is a source of reactive power and hence it must be a capacitor.