Question

What is the net core area for three stepped transformers?

(a) 0.45

(b) 0.56

(c) 0.6

(d) 0.62

This question was posed to me during an online interview.

I'm obligated to ask this question of Design of Core and Winding topic in portion Design of Transformers of Design of Electrical Machines

Answer 1

The correct choice is (c) 0.6

The best I can explain: 0.45 is the net core area for the square core transformers. 0.56 is the core area for cruciform or stepped core transformers.