A moving iron ammeter produces a full-scale torque of 240 N-m with a deflection of 120 at a current of 10 A. the rate of change of self-inductance ( H/rad) of the instrument at full scale is?

A moving iron ammeter produces a full-scale torque of 240 N-m with a

1.	A moving iron ammeter produces a full-scale torque of 240 N-m with a deflection of 120 at a current of 10 A. the rate of change of self-inductance ( H/rad) of the instrument at full scale is?
A.	2.0 H/rad
B.	4.8 H/rad
C.	12.0 H/rad
D.	114.6 H/rad
Answer» C. 12.0 H/rad

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A moving iron ammeter produces a full-scale torque of 240 N-m with a deflection of 120 at a current of 10 A. the rate of change of self-inductance ( H/rad) of the instrument at full scale is?

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