railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical and Electronics Measurements Indicating Instruments MI Instruments
The full-scale deflecting torque of a 20 A moving-iron ammeter is 6 × 10-5 N-m. What is the rate of change of self-inductance with respect to the deflection of the pointer of the ammeter at full scale?
1
0.5 μH/rad
2
0.2 μH/rad
3
1.3 μH/rad
4
0.3 μH/rad