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1. |
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 |
Answer» D. when power factor is unity | |