Question

How is the number of armature slots associated with the armature windings?

(a) number of slots should be such that unbalanced winding is obtained

(b) number of slots should be such that balanced winding is obtained

(c) number of slots should be so low as possible

(d) number of slots should be high as possible

I had been asked this question in an internship interview.

My doubt stems from Armature Design in portion Design of Synchronous Machines of Design of Electrical Machines

Answer 1

The correct option is (b) number of slots should be such that balanced winding is obtained

The best I can explain: The number of slots should be such that balanced winding is obtained. Balanced windings should be obtained because it may lead to losses and heating effects.