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Problem 4 (15 pts): A 230 V shunt DC motor has a nominal armature current of 60 A. If the armature resistance is 0.150,

Problem 4 (15 pts): A 230 V shunt DC motor has a nominal armature current of 60 A. If the armature resistance is 0.150, calculate: a) The internal back EMF across the armature b) The power supplied to the armature c) The mechanical output power developed by the motor

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