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What is the formula for the calculation of rotor resistance?(a) rotor resistance = resistance of the bars + resistance of end rings(b) rotor resistance = resistance of the bars – resistance of end rings(c) rotor resistance = resistance of the bars * resistance of end rings(d) rotor resistance = resistance of the bars / resistance of end ringsI had been asked this question during an interview for a job.I need to ask this question from Design of Rotor Bars and Slots topic in chapter Three Phase Induction Motor of Design of Electrical Machines

Answer»

The CORRECT choice is (a) rotor resistance = resistance of the BARS + resistance of END rings

Easiest explanation: First the resistance of the bars are obtained. NEXT, the resistance of the end rings are calculated and the SUM gives the rotor resistance.



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