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What is the relation between rotor mmf and stator mmf?(a) rotor mmf = 0.85 * stator mmf(b) rotor mmf = 0.80 * stator mmf(c) rotor mmf = 0.75 * stator mmf(d) rotor mmf = 0.70 * stator mmfI had been asked this question in class test.The origin of the question is Design of Rotor Bars and Slots topic in division Three Phase Induction Motor of Design of Electrical Machines

Answer»

Right answer is (a) rotor mmf = 0.85 * STATOR mmf

To EXPLAIN I would say: FIRST the stator mmf is CALCULATED. Then it is MULTIPLIED by 0.85 to obtain the rotor mmf.



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