Q. Lubricant is not required in

(A) Increasing the diameter of threaded portion
(B) Electromagnetic bearing
(C) Hydrostatic bearings
(D) Gas bearings

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✅ Correct Answer: (B) Electromagnetic bearing

Published by Mr. Dubey ⭐ 111.54K Points at 20-Sep-2023 12:38 pm in Machine Design

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