railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical and Electronics Measurements Measurement of Power Measurement of Poly Phase Power
The power in an unbalanced 3-phase 4-wire circuit can be measured by using a _______ method:
1
4 wattmeter
2
3 wattmeter
3
2 wattmeter
4
1 wattmeter