

InterviewSolution
Saved Bookmarks
1. |
A three phase induction motor is sometimes called a generalized transformer in so far as voltage and frequency transformation has been concerned. Then the rotor emf E2 and the rotor current I2 are zero at _________(a) Ns(b) 2Ns(c) Zero(d) Slip of 50%I had been asked this question during an online exam.This key question is from Principle of Operation topic in division Induction Machines of Electrical Machines |
Answer» RIGHT option is (a) Ns Best EXPLANATION: The rotor EMF and CURRENT are zero at the speed of synchronous speed of the MACHINE. |
|