1.

For a certain dynamometer ammeter the mutual inductance (M) varies with deflection θ° as M = -6 cos (θ + 30°) mH. Find the deflecting torque produced a direct current of 50 mA corresponding to a deflection of 60°.

A. 10 N-m
B. 20 N-m
C. 15 μN-m
D. 1.5 μNm
Answer» D. 1.5 μNm


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