0 votes 0 votes A $4$ – pole induction motor, supplied by a slightly unbalanced three-phase $50 Hz$ source, is rotating at $1400\:rpm$. The electrical frequency in $Hz$ of the induced negative sequence current in the rotor is $100$ $98$ $52$ $48$ Power Systems gate2013-ee salient-poles sequence-current + – piyag476 asked Feb 11, 2017 edited Nov 20, 2019 by Lakshman Bhaiya piyag476 1.5k points answer comment Share See all 0 reply Please log in or register to add a comment.