Q. Piston rings are usually made of

  • (A) Stainless steel
  • (B) Cast iron
  • (C) Increasing the diameter of threaded portion
  • (D) Aluminium
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✅ Correct Answer: (B) Cast iron

Published by Mr. Dubey ⭐ 104.82K Points at 20-Sep-2023 12:37 pm in Machine Design

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