Heat and Mass Transfer The total emissivity power is .defined as the total amount of radiation emitted by a black body per unit Temperature Area Thickness Time Temperature Area Thickness Time ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Sensible heat is the heat required to Convert water into steam and superheat it Increase the temperature of a liquid of vapour Change vapour into liquid Change liquid into vapour Convert water into steam and superheat it Increase the temperature of a liquid of vapour Change vapour into liquid Change liquid into vapour ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The thermal diffusivities for gases are generally Less than those for liquids More than those for solids More than those for liquids Dependent on the viscosity Less than those for liquids More than those for solids More than those for liquids Dependent on the viscosity ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Thermal diffusivity is A dimensionless parameter Function of temperature A physical property of the material Used as mathematical model A dimensionless parameter Function of temperature A physical property of the material Used as mathematical model ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Log mean temperature difference in case of counter flow compared to parallel flow will be Less More Depends on other factors Same Less More Depends on other factors Same ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer A heat exchanger with heat transfer surface area A and overall heat transfer coefficient U handles two fluids of heat capacities Cmax and Cmin. The number of transfer units (NTU) used in the analysis of heat exchanger is specified as U/A.Cmin U.Cmin U/Cmin Cmin/U U/A.Cmin U.Cmin U/Cmin Cmin/U ANSWER DOWNLOAD EXAMIANS APP
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