Question

What is the power factor of output watt of 90?

(a) 0.46

(b) 0.51

(c) 0.56

(d) 0.62

I got this question in semester exam.

My question is taken from Output Equation topic in section Design of Single Phase Induction Motor of Design of Electrical Machines

Answer 1

Correct choice is (b) 0.51

Easy explanation: The power factor of output watt of 37 is 0.46 and the power factor for 180 output watt is 0.56. The power factor of the output watt of 90 is 0.51.