If θi is the inversion temperature, θn is the neutral temperature

• Thermodynamics

If θ_i is the inversion temperature, θ_n is the neutral temperature, θ_c is the temperature of the cold junction, then

1. θ_i - θ_c = 2θ_n
2. θ_c - θ_i = 2θ_n
3. θ_i + θ_c = θ_n
4. θ_n = (θ_i + θ_c)/2

Answer

The neutral temperature is related to inversion and cold junction temperature by the following expression:

θ_n = (θ_i + θ_c)/2

The correct option is D.