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Mr. Dubey • 56.32K Points
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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
  • Correct Answer - Option(D)
  • Views: 639
  • Filed under category Heat Engines
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