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

Related MCQs

• 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
• "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?
• An ordinary mercury thermometer can be used for temperatures about
• Three Carnot engines A, B and C having source temperature of 750?K, 700?K and 650?K have sink temperatures respectively 400?k, 350?k and 300?k. Which engine is the least efficient?
• Which of the following gas will satisfy, Boyle's law over a wider range of temperatures and pressures?
• 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
• A Carnot refrigerator extracts 100 kcal of heat per minute from a cold room which is maintained at - 15?C and it is discharged to atmosphere at 30?C. The horse power required to run the unit would be
• For a closed system, the difference between the heat added to the system and the work done by the system is equal to the change in