Electrical Engineering · DC Machines
What is the primary cause of heavy sparking at the brushes of a DC generator?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Too much spring tension at the brush
- 2Shift in the position of MNA (Magnetic Neutral Axis)✓
- 3Short circuit in armature winding
- 4Short circuit in field winding
Correct answer
Shift in the position of MNA (Magnetic Neutral Axis)
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