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    Question

    Thermal efficiency of diesel engine

    is
    A 25 to 32% Correct Answer Incorrect Answer
    B 32 to 38% Correct Answer Incorrect Answer
    C 40-45% Correct Answer Incorrect Answer
    D 70-80% Correct Answer Incorrect Answer

    Solution

    Thermal efficiency is the ratio of net work output to the heat input and it is 25 to 32 % for petrol engine and 32 to 38 % for diesel engine.

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