(Solved): A electrodynamic ammeter with pointer reflection angle of 47.756 degree at full-scale. The torsion ...

A electrodynamic ammeter with pointer reflection angle of 47.756 degree at full-scale. The torsional constant of controlling spring is Ks = 15x10-6 N-m/degree and mutual inductance change is 5 nH/degree i. Find the full-scale current ii. Design the reading sale of the instrument and draw an instrument scale showing current values at corresponding angles, work on 5 scales ( full-scale, 80% of full-scale, 60% of full-scale, 40% of full-scale and 20% of full-scale and 10% of full-scale