engineering recuitment GATE EE 2023-24 Test Series Electrical and Electronics Measurements Measurement of Power Measurement of AC Power
A wattmeter has a current coil of 0.05 Ω resistance and a pressure coil of 5 kΩ resistance. The load takes 20 A at a voltage of 220 V and 0.6 power factor. Then
1
The power consumed by a load = 2640 W
2
The percentage error of the wattmeter if the current coil is on the load side is 0.36%
3
The percentage error of the wattmeter if the pressure coil is on the load side is 0.75%
4
The load current would give an equal error for both the connections is 13.91 A