Q. Excessive sparking at the brushes may be caused due to _____.

(A) dirt on the commutator
(B) loose coupling
(C) misalignment of machine
(D) worn bearing

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✅ Correct Answer: (A) dirt on the commutator

Published by Mr. Dubey ⭐ 104.82K Points at 17-Sep-2023 11:16 am in Electrical and Electronics Engineering

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