The extension leads used to measure the output emf of an iron-constantan thermocouple measuring the temperature of a fluid are connected the wrong way round by mistake (such that the iron extension...

The extension leads used to measure the output emf of an iron-constantan thermocouple measuring the temperature of a fluid are connected the wrong way round by

mistake (such that the iron extension lead is connected to the constantan thermocouple wire and vice versa). The junction between the thermocouple and extension

leads is at a temperature of 120C and the reference junction is at a room temperature of 21C. The output emf measured at the open ends of the extension leads is

27.390 mV.

(a) What fluid temperature would be deduced from this measured emf assuming

that the mistake of connecting the extension leads the wrong way round was

not known?

(b) What is the true fluid temperature?