Electrical Engineering > GATE 2020 > Electrical Instruments
The figure shows a moving iron type meter. The coil has 100 turns and a length of 40 mm. The air gap is 1 mm on either side of the moving element. The flux density in the air gap is 0.2 T. Assume that the permeability of the moving iron element is infinite. The torque on the moving element is _______ x 10-6 N-m (rounded off to 2 decimal places).
Correct : 138.10 to 139.20
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