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A three phase, 50 Hz induction motor has a full load speed of 1440 rpm. Rotor frequency is?(a) 2 Hz(b) 50 Hz(c) 52 Hz(d) 58 HzI have been asked this question in homework.My question comes from Rotor Frequency topic in division Induction Machines of Electrical Machines

Answer»

Right choice is (a) 2 Hz

For explanation I WOULD SAY: s = 0.04, rotor frequency = s*f = 0.04*50 = 2 Hz.



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