Heat and Mass Transfer The unit of Stefan Boltzmann constant is watt/cm3 °K watt/cm2 °K⁴ watt/cm4 °K watt2/cm °K⁴ watt/cm3 °K watt/cm2 °K⁴ watt/cm4 °K watt2/cm °K⁴ ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Thermal diffusivity is A dimensionless parameter Used as mathematical model A physical property of the material Function of temperature A dimensionless parameter Used as mathematical model A physical property of the material Function of temperature ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Two plates spaced 150 mm apart are maintained at 1000°C and 70°C. The heat transfer will take place mainly by Radiation Convection Free convection Forced convection Radiation Convection Free convection Forced convection ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Thermal conductivity of wood depends on Temperature Moisture Density All of these Temperature Moisture Density All of these ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Cork is a good insulator because it has Free electrons Porous body Low density Atoms colliding frequency Free electrons Porous body Low density Atoms colliding frequency 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
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