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What is the ratio of power factor of the 75 watt to 750 watt motor?

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What is the ratio of power factor of the 75 watt to 750 watt motor?

(a) 0.55 : 0.60

(b) 0.50 : 0.60

(c) 0.55 : 0.65

(d) 0.50 : 0.65

This question was addressed to me in examination.

My question is based upon Output Equation in portion Design of Single Phase Induction Motor of Design of Electrical Machines

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Right answer is (c) 0.55 : 0.65

Easy explanation: The power factor of the 75 watt motor is 0.55. The power factor of 750 watt motor is 0.60.

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