Heat and Mass Transfer Thermal conductivity of water at 20°C is of the order of 0.23 0.42 0.51 0.1 0.23 0.42 0.51 0.1 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Film coefficient is defined as the ratio of Thermal conductivity to the equivalent thickness of the film of fluid Temperature drop through the films of fluids to the thickness of film of fluids Thickness of film of fluid to the thermal conductivity Thickness of film of fluid to the temperature drop through the films of fluids Thermal conductivity to the equivalent thickness of the film of fluid Temperature drop through the films of fluids to the thickness of film of fluids Thickness of film of fluid to the thermal conductivity Thickness of film of fluid to the temperature drop through the films of fluids ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The heat transfer takes place according to Zeroth law of thermodynamics Second law of thermodynamics Kirchhoff's law First law of thermodynamics Zeroth law of thermodynamics Second law of thermodynamics Kirchhoff's law First law of thermodynamics ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer According to Prevost theory of heat exchange It is impossible to transfer heat from low temperature source to t high temperature source Heat transfer by radiation requires no medium All bodies above absolute zero emit radiation Heat transfer in most of the cases takes place by combination of conduction, convection and radiation It is impossible to transfer heat from low temperature source to t high temperature source Heat transfer by radiation requires no medium All bodies above absolute zero emit radiation Heat transfer in most of the cases takes place by combination of conduction, convection and radiation ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer A designer chooses the values of fluid flow rates and specific heats in such a manner that the heat capacities of the two fluids are equal. A hot fluid enters the counter flow heat exchanger at 100°C and leaves at 60°C. A cold fluid enters the heat exchanger at 40°C. The mean temperature difference between the two fluids is 40°C 66.7°C 60°C 20°C 40°C 66.7°C 60°C 20°C ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Planck’s law holds good for all coloured bodies black bodies All of these polished bodies all coloured bodies black bodies All of these polished bodies ANSWER DOWNLOAD EXAMIANS APP
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