In a DC generator, severe sparking at the brushes during operation is primarily caused by:

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Physics · Electrical Machines

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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Reactance voltage in the coil undergoing commutation

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Answer 1

Reactance voltage in the coil undergoing commutation

Answer 2

High contact resistance of the carbon brushes

Answer 3

Armature resistance drops

Answer 4

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