The thermoelectric pewers of Pt, Ni and Fe are -4 , -21 and `12 muV` per `0^(@)C` respectively . What will be the magnitude of emf of Pt-Ni and Ni-Fe thermocouples with junctions at `0^(@)C` and `100^(@)C` ?

Thermocouples are used to measure temperature in the linear parts of the emf versus temperature graph wilth cold junction at 0^(@)C . The thermo electric power of Pt, Ni thermocouple are =-4 and -20 microcolt per .^(@)C respectively. What will be the magnitudes of emfs of the thermocopule when thecold junction is at 0^(@)C and the hot junction is at 100^(@)C ?

The thermoelectric powers of iron and nickel with respect to lead are +12 and -20 muV respectivelty at 50^(@)C . Find the emf of the an iron-nickel thermocouple with junctions at 0^(@)C and 100^(@) C.

The thermoelectric powers of iron and copper with respect to lead are +10.5 and -3.5 mu V respectively at 100^(@)C . Find the emf of Cu-Fe thermocouple when its junctions are maintained at 50^(@) and 150^(@) C.

The constants a and b for the pair silver-lead are 2.50 muV^@ C^(-1) and 0.012mu V^@ C^(-2) respectively. For a silver-lead thermocouple with colder junction at 0^@ C ,

In a given thermocouple, the emfs at 250^(@)C and 50^(@) C with respect to 0^(@) C are 40mu V and 5 mu V respectively. Find of emf generated when the junctions are maintained at the temperature at 250^(@)C and 50^(@)C .

Find the neutral and inversion temperatures for Ni-Cu thermocople with the cold junction at 0^@C . Use data from previous example.