The power factor of a single phase load can be calculated if the instruments available are________?
Aone voltmeter and one ammeter
Bone voltmeter, one ammeter and one energy meter
Cone voltmeter, one ammeter and one wattmeter
Dany of the above
Correct answer
C. one voltmeter, one ammeter and one wattmeter
Explanation
The correct answer is one voltmeter, one ammeter and one wattmeter.