Heat Transfer A hot body will radiate heat most rapidly, if its surface is White & polished Black & rough Black & polished White & rough White & polished Black & rough Black & polished White & rough ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A long iron rod initially at a temperature of 20°C has one end dipped in boiling water (100°C) at time, t = 0. The curved surface of the rod is insulated so that heat conduction is one dimensional in the axial direction. The temperature at a distance 100 mm from the dipped end becomes 40°C at time, t = 200 s. The same temperature is achieved at a distance of 200 mm from the dipped end at time t = 356 s t = 400 s t = 800 s t = 283 s t = 356 s t = 400 s t = 800 s t = 283 s ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The thickness of condensate layer in filmwise condensation depends on the All of these Surface configuration Condensation rate Liquid flow rate from the surface All of these Surface configuration Condensation rate Liquid flow rate from the surface ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer As the difference between the wall temperature and bulk temperature increases, the boiling heat transfer co-efficient continues to decrease continues to increase goes through a minimum goes through a maximum. continues to decrease continues to increase goes through a minimum goes through a maximum. ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer efficiency leading of energy conservation in a heat exchanger can be achieved by Enhancing the fluid pumping rate None of these Increasing the tube length Keeping the heat transfer surface clean Enhancing the fluid pumping rate None of these Increasing the tube length Keeping the heat transfer surface clean ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The statement that "maximum wavelength of radiation is inversly proportional to the temperature" is __________ law. None of these Stefan-Boltzman's Wien's displacement Planck's None of these Stefan-Boltzman's Wien's displacement Planck's ANSWER DOWNLOAD EXAMIANS APP
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