Suppose an engineer has installed a chromel-constantan thermocouple but has incorrectly used copper-constantan extension leads (such that the two constantan wires
were connected and the copper extension wire was connected to the chromel thermocouple wire). If the thermocouple was measuring a hot fluid whose real temperature is 150C, the junction between the thermocouple and the extension leads was at
80C, and the reference junction was at 0C:
(a) Calculate the emf (voltage) measured at the open ends of the extension wires.
(b) What fluid temperature would be deduced from this measured emf, assuming
the error in using the incorrect leads was not known?
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