Two-wattmeter method is used to measure the power taken by


Two-wattmeter method is used to measure the power taken by a 3-phase induction motor on no load. The wattmeter readings are 375w and -50w.

Calculate;

i) power factor of the motor at no load.

ii) phase difference of voltage and current in two wattmeters.

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Electrical Engineering: Two-wattmeter method is used to measure the power taken by
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