Question

What are the factors the design of poles of the DC machine depends on?

(a) length, breadth, height of the conductors

(b) area of cross section of poles

(c) area of cross section of poles and height of the poles

(d) area of cross section of poles and height of the poles and the design of field windings

I got this question during an interview.

I would like to ask this question from Pole Design topic in chapter Thermal Design Aspects of Electrical Machines & D.C of Design of Electrical Machines

Answer 1

Correct choice is (d) area of cross section of poles and height of the poles and the design of field windings

Easy explanation: For designing the poles, first the area of cross section of the poles and the height of the poles should be obtained. Then the field winding design details are also required during the pole design.