Question

What is the range of the leakage coefficient in the pole body?

(a) 1.1 to 1.2

(b) 1.00 to 1.5

(c) 1.15 to 1.2

(d) 0.75 to 2.3

This question was addressed to me by my school principal while I was bunking the class.

This intriguing question comes from Design of Rotor in division Design of Synchronous Machines of Design of Electrical Machines

Answer 1

The correct option is (c) 1.15 to 1.2

Easy explanation: The minimum value of the leakage coefficient in the pole body is 1.15. The maximum value of the leakage coefficient in the pole body is 1.2.