1.

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?

A. 0.5 μH/rad
B. 0.2 μH/rad
C. 1.3 μH/rad
D. 0.3 μH/rad
Answer» E.


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