Question

What is the diameter of the wire bands made of tin, steel or bronze wire?

(a) 2 mm

(b) 1 mm

(c) 4 mm

(d) 3 mm

This question was addressed to me at a job interview.

The doubt is from Bracing of Rotor Windings topic in chapter Aspects of Design of Mechanical Parts of Design of Electrical Machines

Answer 1

Right answer is (d) 3 mm

To explain: The wire bands are generally made up of tin, steel or bronze wires. The diameter of those wire bands are 3 mm.