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In spark ignition engines knocking can be reduced by: 
  • a)
    Increasing the compression ratio
  • b)
    Increasing the cooling water temperature
  • c)
    Retarding the spark advance
  • d)
    Increasing the inlet air temperature
Correct answer is option 'C'. Can you explain this answer?
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In spark ignition engines knocking can be reduced by:a)Increasing the ...
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In spark ignition engines knocking can be reduced by:a)Increasing the compression ratiob)Increasing the cooling water temperaturec)Retarding the spark advanced)Increasing the inlet air temperatureCorrect answer is option 'C'. Can you explain this answer?
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