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JIPMER Jipmer Medical Solved Paper-2012

  • question_answer
    The thermo emf of a hypothetical thermocouple varies with the temperature \[\theta \] of hot junction as\[E=a\theta +b{{\theta }^{2}}\]in volts, where the ratio \[\frac{a}{b}\] is\[700{}^\circ C\]. If the cold junction is kept at\[0{}^\circ C\], then the neutral temperature is

    A)  \[700{}^\circ C\]

    B)  \[1400{}^\circ C\]

    C)  \[390{}^\circ C\]

    D)  no neutral temperature is possible for this thermocouple Not Available Option

    Correct Answer: D

    Solution :

    Thermo emf\[E=a\theta +b{{\theta }^{2}}\] Differentiating both sides with respect to \[\theta \] \[\frac{dE}{d\theta }=a+2\theta \]


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