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The temperature of inversion of a thermo...

The temperature of inversion of a thermocouple is `620^(@)C` and the neutral temperature is `300^(@)C`. What is the temperature of cold junction?

A

`40^(@)C`

B

`20^(@)C`

C

`320^(@)C`

D

`-20^(@)C`

Text Solution

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The correct Answer is:
To solve the problem, we need to find the temperature of the cold junction (T) given the temperature of inversion (Tt) and the neutral temperature (Tn) of a thermocouple. ### Step-by-Step Solution: 1. **Identify the Given Values:** - Temperature of inversion (Tt) = 620°C - Neutral temperature (Tn) = 300°C 2. **Use the Relationship Between Temperatures:** The relationship between the temperatures can be expressed as: \[ Tn - T = Tt - Tn \] Here, T is the temperature of the cold junction. 3. **Rearranging the Equation:** We can rearrange the equation to isolate T: \[ Tn - T = Tt - Tn \implies T = Tn - (Tt - Tn) \] 4. **Substituting the Known Values:** Substitute the known values into the equation: \[ T = 300 - (620 - 300) \] 5. **Calculating the Result:** Simplifying the expression: \[ T = 300 - 320 = -20°C \] 6. **Conclusion:** The temperature of the cold junction is: \[ T = -20°C \] ### Final Answer: The temperature of the cold junction is **-20°C**.
To solve the problem, we need to find the temperature of the cold junction (T) given the temperature of inversion (Tt) and the neutral temperature (Tn) of a thermocouple. ### Step-by-Step Solution: 1. **Identify the Given Values:** - Temperature of inversion (Tt) = 620°C - Neutral temperature (Tn) = 300°C ...
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