Question

What is ‘Z/Sa’ calculation during design of armatures?

(a) armature poles/slots

(b) armature conductors/slots

(c) armature slots/poles

(d) armature slots/conductors

I had been asked this question by my college director while I was bunking the class.

My question is from Design of Armature in section Thermal Design Aspects of Electrical Machines & D.C of Design of Electrical Machines

Answer 1

The correct answer is (b) armature conductors/slots

Easiest explanation: This is the second step in the armature design. Firstly, the number of armature conductors is found out. Then the number of slots used is taken and the ratio of both gives the value of ‘Z/Sa’.