Question

What is the range of the ratio of depth to width of core in rectangular core?

(a) 1-2

(b) 1.5-2.5

(c) 1.4-2

(d) 1.5-2

I have been asked this question during an interview.

Enquiry is from Design of Core and Winding in portion Design of Transformers of Design of Electrical Machines

Answer 1

The correct answer is (c) 1.4-2

The explanation: In rectangular core, the ratio of the depth to core should be minimum 1.4. The maximum value of ratio of depth to core is 2.