Question

A 3-phase induction motor with its rotor blocked behaves similar to a _________

(a) transformer under short circuit of secondary terminals

(b) transformer under open circuit of secondary

(c) synchronous motor under slip test

(d) synchronous motor under open circuit

I had been asked this question in an online quiz.

This intriguing question originated from Induction Motor as a Transformer in portion Induction Machines of Electrical Machines

Answer 1

Right choice is (a) transformer under short circuit of secondary terminals

Easy explanation: It is analogous to transformer under the shorted terminals of the secondary.