Question

The cold junction of a thermocouple is maintained at 10^o C. No thermo e.m.f. is developed when the hot junction is maintained at 530^o C. The neutral temperature is

• A. 260⁰ C
• B. 270⁰ C
• C. 265⁰ C
• D. 520⁰ C

Answer 1

Answer: (B)

270⁰ C

Answer 2

Given $t_{c} = 10^{o}C$ and $t_{i} = 530^{o}C$ hence by using $t_{n} = \frac{t_{i} + t_{c}}{2}$ ⇒ $t_{n} = 270^{o}C$