Poor commutation of DC generator

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What may cause a poor commutation of DC generator?

asked 13 Nov, 19:13

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  1. Overload
  2. Hard or high resistance brushes
  3. Rough commutators bars
  4. High mica on the commutator grounds
  5. Short circuit in the armature
  6. Open circuit in the armature
  7. Poor brush contact
  8. Uneven air gap
  9. Weak magnetic field
  10. Inaccurate brush spring
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answered 13 Nov, 19:13

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