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Mr. Dubey • 100.64K Points
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Q. A 4 pole, 500V shunt motor has 720 wave connected conductors on its armature. The full load armature current is 60A and flux per pole is 0.03Wb. The armature resistance is 0.2Ω and contact drop per brush is 1V. What is the back emf?

  • (A) 352v
  • (B) 408v
  • (C) 474v
  • (D) 486v
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