Question

At standstill the equivalent of the 3-phase induction motor is similar to _________

(a) short-circuited  two winding transformer

(b) open circuit two winding transformer

(c) stand still synchronous motor

(d) none of the mentioned

This question was addressed to me in an interview for internship.

I'd like to ask this question from Equivalent Circuit in chapter Induction Machines of Electrical Machines

Answer 1

Correct option is (a) short-circuited  two winding transformer

Explanation: For s=1 at standstill, so it same as the short circuit of the transformer for the induction motor.