If the cold junction of a thermocouple is kept at 0 and the hot junction is kept at T, then the relation between neutral temperature (Tn) and temperature of inversion (Ti) is (a) Tn = 2Ti (b) Tn = Ti - T (c) Tn = Ti + T (d) Tn = Ti/2

Answer: (d). Neutral temperature is the mean of the cold-junction and inversion temperatures: Tn = (Tc + Ti)/(2). With Tc = 0: Tn = Ti/2. So the answer is (d) Tn = Ti/2.

If the cold junction of a thermocouple is kept at 0 and the hot… | NEET 2007 (AIPMT)

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Electrical Power & Heating Effect

If the cold junction of a thermocouple is kept at $0^\circ\text{C}$ and the hot junction is kept at $T^\circ\text{C}$ , then the relation between neutral temperature $(T_n)$ and temperature of inversion $(T_i)$ is

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Answer: (d)

Neutral temperature is the mean of the cold-junction and inversion temperatures: $T_n = \dfrac{T_c + T_i}{2}$ .
With $T_c = 0^\circ\text{C}$ : $T_n = \dfrac{T_i}{2}$ .
So the answer is (d) $T_n = T_i/2$ .

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