Physics · Electrical Machines
Which of the following factors can cause brush sparking in a universal motor?
- 1Shorted armature winding, open armature winding, and high commutator mica✓
- 2High commutator mica only
- 3Open armature winding only
- 4Shorted armature winding only
Correct answer
Shorted armature winding, open armature winding, and high commutator mica
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