Electronics and Communication Engineering - Electronic Devices and Circuits - Discussion
Discussion Forum : Electronic Devices and Circuits - Section 8 (Q.No. 13)
13.
On which of the following effect do thermocouples work?
Discussion:
2 comments Page 1 of 1.
Khkuhi said:
9 years ago
You are right @Vishaldeep.
Vishaldeep said:
1 decade ago
Explanation:-
in 1981 seebak found 2 different metals having different temperature junctions that deflected a compass magnet based on ampere law. thermocouple can measure temp diff and to measure it need a reference temp to compare with standard readings which in general given by
V = A(Th-Tc).
V-Voltage difference between two dissimilar metals.
A- Seebeck coefficient.
Th - Tc - Temperature difference between hot and cold junctions respectively.
in 1981 seebak found 2 different metals having different temperature junctions that deflected a compass magnet based on ampere law. thermocouple can measure temp diff and to measure it need a reference temp to compare with standard readings which in general given by
V = A(Th-Tc).
V-Voltage difference between two dissimilar metals.
A- Seebeck coefficient.
Th - Tc - Temperature difference between hot and cold junctions respectively.
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