Question

In a thermo couple the temperature of the cold junction is ${15}^{0}C$. If the temperature of inversion is ${485}^{0}C$, the neutral temperature of the thermo couple is

• A. ${235}^{0}C$
• B. ${985}^{0}C$
• C. ${955}^{0}C$
• D. ${250}^{0}C$

Answer 1

The correct option is D ${250}^{0}C$

If $T_c$ is the temperature of cold junction, $T_i$ be the inversion temperature and $T_n$ be the neutral temperature,

Then, $T_i=2T_n-T_c$

$\Rightarrow T_n=\frac{T_i+T_c}{2}=\frac{485+15}{2}={250}^{o}C$