Question

What is the relationship between the losses and the maximum efficiency on the current density?

(a) current density increases, losses decrease, efficiency increases

(b) current density increases, losses increase, efficiency increases

(c) current density decreases, losses decrease, efficiency increases

(d) current density decreases, losses increase, efficiency increases

The question was posed to me by my college director while I was bunking the class.

I want to ask this question from Design of Core and Winding in portion Design of Transformers of Design of Electrical Machines

Answer 1

Right option is (c) current density decreases, losses decrease, efficiency increases

Explanation: As the current density decreases, the losses decrease. As the losses decrease the maximum efficiency increases.