1.

When the poles of a 3-phase wound rotor induction motor increased, it _________(a) will decrease maximum power factor(b) will increase maximum power factor(c) will make no change in power factor(d) can not be depictedI got this question in an interview for job.The question is from Applications of Polyphase Induction Motors in chapter Induction Machines of Electrical Machines

Answer»

The correct choice is (b) will INCREASE maximum power factor

The best I can explain: If number of poles INCREASES, SPEED decreases, slip increases, REACTANCE decreases, power factor angle decreases and so the power factor increases.



Discussion

No Comment Found

Related InterviewSolutions