railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical and Electronics Measurements Measurement of Power Measurement of AC Power
When two-wattmeter method of measurement of power is used to measure power in a balanced three-phase circuit, if the wattmeter readings are zero and positive maximum respectively, then
1
the power consumed in the circuit is zero
2
the power factor of the circuit is zero
3
the power factor is unity
4
the power factor is 0.5 lagging