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  1. Starts at 40° after bottom dead centre and ends at 30° before top dead centre
  2. Starts at 40° before bottom dead centre and ends at 30° after bottom dead centre
  3. Starts at bottom dead centre and ends at top dead centre
  4. May start and end anywhere
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1 Answers

Answer: Option 1

In a four stroke cycle petrol engine, the compression Starts at 40° after bottom dead centre and ends at 30° before top dead centre

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