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Two three phase induction motors A and B are identical in all respects except that motor A has a larger air-gap than motor B. Which motor will have better full-load power factor?(a) A(b) B(c) Both A and B(d) Neither A nor BThe question was posed to me by my college director while I was bunking the class.Query is from Principle of Operation topic in portion Induction Machines of Electrical Machines

Answer»

Right choice is (b) B

Explanation: At FULL load CONDITIONS, the excitation current is not very HIGH and so the POWER factor improves.



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