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A shunt motor rotating at 1500 r/min is fed by a 120 V source. The line current is 51 A and the shunt field resistance is 120 ohm. If the armature resistance is 0.1 ohm, calculate the current in the armature. 

(A) 1 A (B) 51 A (C) 50 A (D) 12 A 

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