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Priyanka Tomar • 35.28K Points
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Q. Which one of the following is a correct statement

  • (A) the exhaust valve of a four stoke I.C. engine should open exactly at the end of expansion stroke
  • (B) in actual practice, inlet valve of a four stroke I.C. engine should open exactly at the start of suction stroke
  • (C) the inlet valve remains open approximately for 180?
  • (D) valve overlap is the angle during which both the inlet and exhaust valves remain open simultaneously
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