Question

What is the use of the wire bands of rotor?

(a) used for bracing the rotor windings

(b) used for circulating the current in the rotor windings

(c) used for the encircling of the rotor windings

(d) used for the protecting the rotor windings

I had been asked this question in examination.

I'd like to ask this question from Bracing of Rotor Windings in portion Aspects of Design of Mechanical Parts of Design of Electrical Machines

Answer 1

The correct choice is (a) used for bracing the rotor windings

The explanation: Bands used on the rotors of electrical machines are intended for bracing the rotor windings. This is done against their shift in the radial direction under action of centrifugal forces.