Question

What is the output equation of a single phase induction motor developed by P.H Tricky?

(a) diameter^2 * length = 16.5 / H.P * output coefficient * frequency constant * motor type constants * rpm * 10^6

(b) diameter^2 * length = 16.5 * H.P * output coefficient * frequency constant * motor type constants  /rpm * 10^6

(c) diameter^2 * length = 16.5 * H.P / output coefficient * frequency constant * motor type constants * rpm * 10^6

(d) diameter^2 * length = 16.5 * H.P * output coefficient / frequency constant * motor type constants * rpm * 10^6

I had been asked this question by my school principal while I was bunking the class.

This key question is from Parameters topic in chapter Design of Single Phase Induction Motor of Design of Electrical Machines

Answer 1

The correct option is (b) diameter^2 * length = 16.5 * H.P * output coefficient * frequency constant * motor type constants  /rpm * 10^6

The explanation is: The output coefficient, horse power, frequency constant, motor type constant along with the speed is calculated. On substitution we get the diameter^2 * length value.