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    Question

    How is thermal efficiency different in diesel and petrol

    engines?
    A Diesel engines have lower efficiency Correct Answer Incorrect Answer
    B Petrol engines have higher efficiency Correct Answer Incorrect Answer
    C Diesel engines have higher efficiency Correct Answer Incorrect Answer
    D Both have the same efficiency Correct Answer Incorrect Answer
    E Efficiency depends only on engine size Correct Answer Incorrect Answer

    Solution

    Diesel engines typically have higher thermal efficiency (32-38%) compared to petrol engines (25-32%).

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