In a 3-phase power measurement by two wattmeter method the reading of one of the wattmeter was zero. The power factor of the load must be
A. unity
B. 0.5
C. 0.3
D. zero
Answer:B
In a 3-phase power measurement by two wattmeter method the reading of one of the wattmeter was zero. The power factor of the load must be
A. unity B. 0.5 C. 0.3 D. zero