Q. In a commutator

(A) copper is harder than mica
(B) mica and copper are equally hard
(C) mica is harder than copper
(D) none of the above

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✅ Correct Answer: (C) mica is harder than copper

Published by Mr. Dubey ⭐ 109.99K Points at 16-Sep-2023 02:44 pm in D.C. Generators

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