Q. For a dc machine, its commutator has a diameter of 50 c rotating at 1000 rpm. For a brush width of 1 cm, the time commutation taken by the machine will be

(A) 0.382 ms
(B) 0.456 ms
(C) 0.573 ms
(D) 0.312 ms

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✅ Correct Answer: (A) 0.382 ms

Explanation: time of commutation = brush width/peripheral velocity

Published by Mr. Dubey ⭐ 111.54K Points at 17-Sep-2023 11:28 am in Electrical Drives and Controls (EDC)

Explanation by: Mr. Dubey

time of commutation = brush width/peripheral velocity

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