Question

What is the formula for the height of pole body?

(a) height of pole body = height of the winding + 0.02

(b) height of pole body = height of the winding * 0.02

(c) height of pole body = height of the winding – 0.02

(d) height of pole body = height of the winding / 0.02

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

My question is from Design of Rotor topic in chapter Design of Synchronous Machines of Design of Electrical Machines

Answer 1

Right choice is (a) height of pole body = height of the winding + 0.02

To elaborate: The height of the pole body is one of the design factors in the design of rotor. It is obtained by adding the value of the height of winding with 0.02, which is the approximate space occupied by flanges.