A 3 phase balanced supply feeds 3 phase unbalanced load. Power supplied to the load can be measured by using 1.2 wattmeter 2.one wattmeter 3.3 wattmeter Which of the above statements is correct?

A 3 phase balanced supply feeds 3 phase unbalanced load. Power supplied to the load can be measured by using

1.2 wattmeter

2.one wattmeter

3.3 wattmeter

Which of the above statements is correct?

Answer: Option B

Explanation:

A minimum of 2 wattmeters is required to measure 3 phase power. Of course power can be measured by putting one wattmeter in each phase.