Emf generated in a thermocouple depends on the temperature ___________________?
Correct answer: C. Difference between hot and cold junctions
- A. Of cold junction only
- B. Of hot junction only
- C. Difference between hot and cold junctions
- D. Difference between cold junction and atmospheric temperature
Explanation
Thermocouple emf is produced by the temperature difference between its hot and cold junctions, with the exact relation being nonlinear. If both junctions are at the same temperature, no net emf is generated.
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