railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical and Electronics Measurements Measurement of Energy
Which of the following is used with the pressure coil to bring the flux produced by the shunt magnet exactly in quadrature with the applied voltage?
1
Copper shading bands are provided on the U limb
2
Aluminium shading bands are provided on the central limb
3
Aluminium shading bands are provided on the U limb
4
Copper shading bands are provided on the central limb