railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical and Electronics Measurements Measurement of Power Measurement of Poly Phase Power
What happens to the reading of a wattmeter when the power factor of a circuit is changed from unity power factor to leading power factor?
1
The wattmeter reading remains unchanged
2
The wattmeter reading decreases
3
The wattmeter reading increases
4
The wattmeter cannot measure the leading power factor