Q153 / 160 · TS EAMCET 2007 · Physics

Temperature of cold junction in a thermocouple is $10^{\circ} \mathrm{C}$ and neutral temperature is $270^{\circ} \mathrm{C}$, then the temperature of inversion is

  • A
    $540^{\circ} \mathrm{C}$
  • Correct answer
    B
    $530^{\circ} \mathrm{C}$
  • C
    $280^{\circ} \mathrm{C}$
  • D
    $260^{\circ} \mathrm{C}$

Solution

Temperature of inversion is $\begin{aligned} & T_i=2 T_n-T_0 \\ & \therefore \quad T_i=2 \times 270-10=530^{\circ} \mathrm{C} \\ & \end{aligned}$

Hence, the correct answer is option: 'B'.

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