railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical and Electronics Measurements Measurement of Power Measurement of Poly Phase Power
Which of the following statements related to dynamometer type wattmeter is INCORRECT?
1
The pressure coil is a moving coil.
2
Air friction damping is used.
3
It can be used only for AC circuits.
4
Both the coils are air cored.