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How does the revolving field produce emf in the bars?(a) revolving field produces emf of fundamental frequency in the bars(b) revolving field produces emf of third frequency in the bars(c) revolving field produces emf of no frequency in the bars(d) revolving field produces emf of sinusoidal frequency in the barsThis question was posed to me in an interview for job.My query is from Design of End Rings in chapter Three Phase Induction Motor of Design of Electrical Machines

Answer»

Right OPTION is (a) revolving FIELD produces EMF of fundamental frequency in the bars

Explanation: The stator winding is 3 PHASE distributed winding and thus produces a revolving field. This revolving field produces emfs of fundamental frequency in the bars.



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