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Measurement, Conversion and Control - Technical MCQs

Q1:

The output voltage of a typical thermocouple is

A less than 100 mV

B greater than 1 V

C Thermocouples vary resistance, not voltage.

D None of the above

ANS:A - less than 100 mV

A thermocouple works on the principle of Seebeck effect which state when two different wire are connected together and two junctions are formed one junction is cold and other is hot and because of that emf is induced in mV.

Thermocouple are B, E, J, K, N, R, S and T.