Q.

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 wattmeter
  • COne voltmeter, one ammeter and one energy meter 
  • DAny of the above
Correct Answer : (B)

One voltmeter, one ammeter and one wattmeter

Hints :

The power factor of a single phase load can be calculated if the instruments available are One voltmeter, one ammeter and one wattmeter.

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