1. Starts at 15° before top dead center and ends at 30° after top dead center
  2. Starts at top dead center and ends at 30° after top dead center
  3. Starts at 15° after top dead center and ends at 30° before bottom dead center
  4. May start and end anywhere
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1 Answers

Answer: Option 3

The expansion of fuel in a four stroke cycle diesel engine Starts at 15° after top dead center and ends at 30° before bottom dead center

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