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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 ohms. If the…

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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 ohms. If the armature resistance is 0.1 ohm, calculate the current in the armature.
  • A1 A
  • B51 A
  • C50 A
  • D12 A
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Given that, line current (IL) = 51 A

Shunt field resistance (Rsh) = 120 Ω

Voltage (V) = 120 V

Shunt current (Ish) = 120/120 = 1 A

Armature current (Ia) = IL – Ish = 51 – 1 = 50 A