Two-wattmeter method is employed to measure power in 3-phase

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Two-wattmeter method is employed to measure power in 3-phase balanced system with the current coil connected in the A and C lines. The phase sequence is ABC. If the wattmeter with its current coil in A-phase line reads zero, then the power factor of the 3-phase load will be:

1. zero lagging
2. zero leading
3. 0·5 lagging
4. 0·5 leading

Correct Option: C

NA