Question

What is the height of the single phase shell type transformer?

(a) height = height of window + width of the largest stamping

(b) height = 2*height of window + width of the largest stamping

(c) height = height of window + 2* width of the largest stamping

(d) height = height of window – width of the largest stamping

The question was asked in unit test.

My question comes from Overall Dimensions in chapter Design of Transformers of Design of Electrical Machines

Answer 1

Correct choice is (c) height = height of window + 2* width of the largest stamping

To explain: First the height of the window is obtained. Then the width of the largest stamping is calculated and substituting in the above formula provides the height of the single phase shell type transformer.