engineering recuitment UPPCL Technician Electrician 2022 Mock Test Electrician and Wireman Measuring Instruments
A wattmeter consists of:
1
four coils: two current coils and two potential coils
2
three coils: one current coil and two potential coils
3
two coils: one current coil and one potential coil
4
three coils: two current coils and one potential coil