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Punjab Medical Punjab - MET Solved Paper-2011

  • question_answer
    A Carnot engine takes heat from a reservoir at\[{{627}^{o}}C\]and rejects heat to a sink at\[{{27}^{o}}C\]. Its efficiency will be

    A) \[\frac{3}{5}\]                                   

    B) \[\frac{1}{3}\]

    C) \[\frac{2}{3}\]                                   

    D) \[\frac{200}{209}\]

    Correct Answer: C

    Solution :

    \[\eta =1-\frac{{{T}_{2}}}{{{T}_{1}}}\] \[\eta =1-\frac{(27+273)}{(273+627)}\] \[=1-\frac{300}{900}=\frac{600}{900}=\frac{2}{3}\]


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