Question

How is the reluctance of the interleaved corner related with the magnetizing current?

(a) reluctance of the interleaved corner is directly proportional to the magnetizing current

(b) reluctance of the interleaved corner is indirectly proportional to the magnetizing current

(c) reluctance of the interleaved corner is directly proportional to the square of the magnetizing current

(d) reluctance of the interleaved corner is indirectly proportional to the square of the magnetizing current

I had been asked this question in an interview.

I would like to ask this question from Current Transformers Construction topic in chapter Design of Current Transformers (CT) of Design of Electrical Machines

Answer 1

Right choice is (a) reluctance of the interleaved corner is directly proportional to the magnetizing current

Easy explanation: The reluctance of the interleaved corner is directly proportional to the magnetizing current. As the reluctance is being reduced it in turn reduces the magnetizing current.