Q. The railway carriage couplings have

  • (A) Square threads
  • (B) Acme threads
  • (C) Knuckle threads
  • (D) Buttress threads
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✅ Correct Answer: (D) Buttress threads

Published by Mr. Dubey ⭐ 104.84K Points at 24-Sep-2023 10:43 pm in Machine Design

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