Question

How is the iron loss related with the choice of specific magnetic loading?

(a) choice of magnetic loading is directly proportional to the iron loss

(b) choice of magnetic loading is indirectly proportional to the iron loss

(c) choice of magnetic loading is directly proportional to the square of the iron loss

(d) choice of magnetic loading is indirectly proportional to the square of the iron loss

The question was posed to me during an interview.

I want to ask this question from Synchronous Machines Output Equation in section Design of Synchronous Machines of Design of Electrical Machines

Answer 1

Correct choice is (a) choice of magnetic loading is directly proportional to the iron loss

Easy explanation: The choice of specific magnetic loading is directly proportional to the iron loss. The iron loss increases with the increase in the air gap density.