In a particular industrial situation, a chromel-constantan thermocouple with
chromel-constantan extension wires is used to measure the temperature of a fluid. In
connecting this measurement system, the instrumentation engineer responsible has
inadvertently interchanged the extension wires from the thermocouple. The ends of
the extension wires are held at a reference temperature of 0C and the output emf
measured is 28.62 mV. If the junction between the thermocouple and extension
wires is at a temperature of 40C, what temperature of fluid is indicated and what is
the true fluid temperature?
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