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Discussion :: Internal Combustion Engines

  1. The fuel air ratio in a petrol engine fitted with suction carburettor, operating with dirty air filter as compared to clean filter will be

    2. A.

     Higher
    B.

     Lower
    C.

     Remain unaffected
    D.

     None of the above

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    Answer : Option A

    Explanation :

    The fuel air ratio in a petrol engine fitted with suction carburettor, operating with dirty air filter as compared to clean filter will be Higher. For proper combustion of fuel, engine require oxygen, and this oxygen is supplied to engine by atmospheric air. The ratio of mass of air sucked by engine to mass of fuel injected is air-fuel ratio.

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