Question

If the induction motor connected to a power grid draws real power P and reactive power Q. If it is made to run as a generator, then P and Q will be?

(a) negative, positive

(b) positive, positive

(c) positive, negative

(d) negative, negative

The question was asked in examination.

The doubt is from Power Factor Control of Three Phase Induction Motors in division Induction Machines of Electrical Machines

Answer 1

The correct choice is (a) negative, positive

To explain: Induction motor will always need reactive power as it is single excited machine.