BCECE Engineering BCECE Engineering Solved Paper-2005

  • question_answer
    Which is not a path function?

    A)  \[\Delta Q\]                      

    B)                         \[\Delta Q+\Delta W\]

    C)         \[\Delta W\]                                     

    D)         \[\Delta Q-\Delta W\]

    Correct Answer: D

    Solution :

    In thermodynamics there is a function of the thermodynamic   coordinates   (P, V and T) whose final value minus its initial value equals the change \[\Delta Q-\Delta W\]in the process. We call this function the internal energy\[\Delta U\]function which depends only on the initial and final positions, so it is not a path function.


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