A) \[1360{}^\circ C\]
B) \[680{}^\circ C\]
C) \[340{}^\circ C\]
D) \[170{}^\circ C\]
Correct Answer: C
Solution :
The neutral temperature \[{{T}_{n}}\] is constant for a given thermo couple. The inversion temperature changes with the temperature of cold junction. \[{{T}_{i}}-{{T}_{n}}={{T}_{n}}-{{T}_{c}}\] \[\left( \begin{align} & \text{Where}\,{{t}_{C}}=\text{temperature}\,\text{of}\,\text{cold}\,\text{junction} \\ & {{T}_{i}}=\text{temoperature}\,\text{of}\,\text{inversion} \\ & \text{Given}:\,{{T}_{c}}=0\,{{\,}^{o}}C,{{T}_{i}}680{{\,}^{o}}C \\ \end{align} \right)\] \[{{T}_{n}}=\frac{{{T}_{i}}+{{T}_{c}}}{2}\] \[{{T}_{n}}=\frac{680{{\,}^{o}}C+0{{\,}^{o}}C}{2}\] \[=340{{\,}^{o}}C\]
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