Q. In order to reduce wear and eliminate scuffing, piston ring in internal combustion engines are

(A) Made of soft material
(B) Provided with grooves
(C) Lubricated thoroughly
(D) Plated with chromium, cadmium or phosphate

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✅ Correct Answer: (D) Plated with chromium, cadmium or phosphate

Published by Mr. Dubey ⭐ 111.54K Points at 20-Sep-2023 12:24 pm in Heat Engines

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