In two wattmeter method of 3 phase power measurement, when does one wattmeter read negative ___

In two wattmeter method of 3 phase power measurement, when does one wattmeter read negative

A. when power factor is less than 0.5 lagging
B. when power factor is greater than 0.5 lagging
C. when power factor is less than 0.5
D. when power factor is unity

Show Answer

Answer: C

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