Answer Posted / deepak

as we know working principle of thermocouple , mv generation
is function of temprature difference between hot and cold
junctions, in above case we are keeping thermocouple on
table in room .means both junctions at same temprature hence
it should be shown zero temprature.for example,
if room have 30 degree temp.then hot -cold= actual temp
30- 30 = 0

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