engineering recuitment JSSC JE Mock Test 2023 Electrical and Electronics Measurements Indicating Instruments Electro Dynamometer Type Instruments
How many pressure coils and current coils are there in the dynamometer type three phase wattmeter?
1
There is one pressure coil and one current coil.
2
There is no pressure coil and no current coil.
3
There are three pressure coils and three current coils.
4
There are two pressure coils and two current coils.