When a direct current is passed through a junction of two dissimilar metals, the junction becomes either cold or hot. The phenomenon is known as

Related MCQs

• If a closed circuit is made of two dissimilar metals, an electric current flows in the circuit whdn the two junctions are maintained at different temperatures. This phenomenon is known as
• "What two dissimilar metals are heated at one end cooled at the other c.m.f. is developed proportional to difference of temperatures at two ends". Which of the following name is associated with the above statement?
• "Heat can flow from cold substance to hot substance with the aid of external work". Which of the following name is associated with the above statement?
• "Heat flows from hot substance to cold substance unaided". The name associated with the above statement is
• If the sun becomes twice as hot
• In case of centrifugal compressors the phenomenon of unsteady, periodic and reversed flow is known as
• In case of centrifugal compressors the phenomenon of fixed mass flow rate in compressor regardless of pressure ratio is known as
• In case of centrifugal compressors, the phenomenon of air stream not able to follow the blade contour of an axial compressor is known as
• When a fluid is passed in steady, flow through a porous plug in a duct under such conditions that heat transfer, kinetic energy change and potential change is negligible, the process is called
• The statement that the entropy of a pure substance in complete theromodynamic equilibrium becomes zero at the absolute zero of temperature is known as