A 4 pole 3 phase induction motor runs at 1440 rpm . Find the slip speed on a 50 hz supply by forum user · Published October 8, 2020 · Updated October 8, 2020
Synchronous speed, Ns = 120 * f/P
frequency= 50hz, poles = 4
120*50/4 = 1500 rpm
3. Then the slip speed = 1500 – 1440 =60rpm