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    Question

    Thermal efficiency of diesel engine varies between

    A 25% to 30% Correct Answer Incorrect Answer
    B 32% to 38% Correct Answer Incorrect Answer
    C 60% to 70% Correct Answer Incorrect Answer
    D 70% to 75% Correct Answer Incorrect Answer

    Solution

    A diesel engine can convert 32% to 38% of the energy in the fuel into useful mechanical work, while the remaining energy is lost as waste heat.

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