The power factor of a single phase load can be calculated if the instruments available are
A. one voltmeter and one ammeter
B. one voltmeter, one ammeter and one wattmeter
C. one voltmeter, one ammeter and one energy meter
D. any of the above
Answer:B
The power factor of a single phase load can be calculated if the instruments available are
A. one voltmeter and one ammeter B. one voltmeter, one ammeter and one wattmeter C. one voltmeter, one ammeter and one energy meter D. any of the above