Question

What is the range of leakage coefficient for output of 1000kW?

(a) 1.12-1.25

(b) 1.11-1.22

(c) 1.09-1.18

(d) 1.08-1.16

I got this question by my college director while I was bunking the class.

This interesting question is from Pole Design in portion Thermal Design Aspects of Electrical Machines & D.C of Design of Electrical Machines

Answer 1

Correct choice is (d) 1.08-1.16

To explain I would say: 1.12-1.25 is the leakage coefficient when the output is 50kW. 1.11-1.22 is the leakage coefficient when the output is 100kW. 1.09-1.18 is the leakage coefficient when the output is 500kW.