Question

What is the relationship between utilization factor and the number of core steps?

(a) utilization factor is directly proportional to the number of core steps

(b) utilization factor is indirectly proportional to the number of core steps

(c) utilization factor is indirectly proportional to the square of number of core steps

(d) utilization factor is directly proportional to the square of number of core steps

I have been asked this question during an online exam.

The query is from Design of Core and Winding topic in division Design of Transformers of Design of Electrical Machines

Answer 1

The correct answer is (a) utilization factor is directly proportional to the number of core steps

Easiest explanation: The utilization factor increases with the increase in the number of core steps used. This eventually increases the manufacturing cost.