Question

What is the formula for the total space required for the winding?

(a) total space = copper area + space factor

(b) total space = copper area – space factor

(c) total space = copper area / space factor

(d) total space = copper area * space factor

This question was posed to me during an interview for a job.

I'd like to ask this question from Design of Rotor topic in section Design of Synchronous Machines of Design of Electrical Machines

Answer 1

Correct choice is (c) total space = copper area / space factor

To explain: The copper area is calculated from its respective formula. Then the space factor is calculated and the ratio gives the value of total space.