Question

8. Derive an expression for the torque of a moving-iron ammeter. The inductance of a certain moving-iron ammeter is (8+40 -202)4H where 0 is the deflection in radians from zero position. He control-spring torque is 12 x 10-6 N-m/rad. Calculate the scale position in radians for a current of 3A.2​

Answer 1

Answer:

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