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 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.

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 .

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 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 ,

Find the height of the cuboid if its length and breadth are 3.5cm and 2.5cm respectively and its volume is 100cm^(-3)

The cold junction of a thermocouple is maintained at 10^(@)C . No thermo e.m.f . is developed when the hot junction is maintained at 530^(@)C . The neutral temperature is

Find the rate of change of area of the circle with respect to its radius 'r' when r=3.5 cm.

The cold junction of a thermocouple is maintained at 15^(@)C . No thermo-emf is developed when the hot junction is mainted at 525^(@)C . Find neutral temperature.

If the exponents of 5 and 7 in 100_(C_(50)) are respectively x and y then