railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical and Electronics Measurements Indicating Instruments Electro Dynamometer Type Instruments
This type of instrument is most commonly employed for measuring power in AC as well as in DC circuits. It is based on the principle that mechanical force exists between two conductors carrying current.
From the above figure and the context identify the type of instrument.
1
Magnetic type barometer
2
Electrodynamometer type wattmeter
3
Induction type wattmeter
4
Capacitance type wattmeter