📊 Process Control And Instrumentation
Q. Temperature measurement range of iron-constantan thermocouple is 0 to 870°C. It can be used to measure sub zero temperature, because at lower temperature
  • (A) Emf produced is very low of the order of microvolt
  • (B) Embrittlement of iron occurs
  • (C) Rusting of iron takes place
  • (D) Both B and C
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✅ Correct Answer: (D) Both B and C

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