_ Temperature measurement range of iron-constantan thermocouple is 0 t – McqOptions

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1.	_ Temperature measurement range of iron-constantan thermocouple is 0 to 870¬¨‚àûC. 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
Answer» E.

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