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If induction motor air gap power is 67 KW and mechanically developed power is 26 KW, then rotor ohmic loss will be _________ KW.

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If induction motor air gap power is 67 KW and mechanically developed power is 26 KW, then rotor ohmic loss will be _________ KW.

(a) 41

(b) 42

(c) 43

(d) 44

I had been asked this question in quiz.

I would like to ask this question from Induction Motors Speed Control in portion Speed Control of Direct Current Motors & Induction Motors of Electric Drives

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The correct answer is (a) 41

Best explanation: Rotor ohmic losses are due to the resistance of armature windings. Net input power to the rotor is equal to the sum of rotor ohmic losses and mechanically developed power. Rotor ohmic losses=Air gap power-Mechanical developed power=67-26=41 KW.

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