Question

What is the main advantage of a winding with multi-turns coils?

(a) reduce the choosing of the value of stator slots

(b) allows greater flexibility in selecting the value of stator slots

(c) increases the flexibility in selecting the number of stator slots

(d) has no effect on the number of stator slots

I had been asked this question in semester exam.

This interesting question is from Construction of Hydro-Generators in chapter Design of Synchronous Machines of Design of Electrical Machines

Answer 1

The correct option is (b) allows greater flexibility in selecting the value of stator slots

To elaborate: The main advantage of a winding with multi-turns coils is that it allows a greater flexibility in selecting the value of stator slots. It in turn helps in choosing the required number of turns per phase.