Chapter 9 THERMOELECTRICITY MCQs

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1. . The process of generation of voltage by applying heat energy to a junction of two dissimilar metals is called_________.





2. . When two dissimilar metals like copper and zinc are joined together, a transfer of _________ can take place





3. . The metal which does not exhibit Thomson effect is_________.





4. . As heat energy is applied to the junction of two dissimilar metals electrons are _________.





5. . The thermoelectric voltage in a thermocouple is dependent upon the ________ applied to the junction of the two dissimilar metals





6. . The Thermoelectricity or thermoelectric effect comprises of _________ distinct effects





7. . There is a generation of electrical potential due to the application of a heat source is known as_________.





8. . The ______________ is the reverse phenomenon of the Seebeck effect





9. . The absorption or evolution of heat energy, if a current is allowed to flow in a conductor having its different parts of different temperatures is known as _________.





10. . The transfer of heat due to the current in the direction of the current is called the _________.





11. . A third metal may be inserted into a thermocouple system without affecting the e.m.f generated is law of _________.





12. . A process whereby a voltage is added (or subtracted) from the output voltage of the thermocouple so that the reference junction appears to be at 0 °C even if it is not is known as _________ junction compensation.





13. . The amount of energy absorbed or evolved when unit current flows for one second between two points of a conductor which differ in temperature by 1°C is called_______.





14. . _______converts change in temperatures of its metallic junction to electrical voltage.





15. . A third metal may be inserted into a thermocouple system if, and only if, the junctions with the third metal are kept at the





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