Solution : P = 4 , A = P = 4 , Z = 480 o = 20 mWb = 20 x 10-3 Wb , 12 = 50 A PZ 4 X 480 = 0.159 X 0 12 = 0.159 x 20 x 10-3 x 50 x = 76.394 N - m A 4 Now Т.
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