Heat and Mass Transfer Unit of thermal conductivity in S.I. units is W/m °K J/m² sec Option (B) and (C) above J/m °K sec W/m °K J/m² sec Option (B) and (C) above J/m °K sec ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Thermal diffusivity is Used as mathematical model Function of temperature A physical property of the material A dimensionless parameter Used as mathematical model Function of temperature A physical property of the material A dimensionless parameter ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Thermal diffusivity is a Physical property of a substance Dimensionless parameter All of these Function of temperature Physical property of a substance Dimensionless parameter All of these Function of temperature ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The ratio of the thickness of thermal boundary layer to the thickness of hydrodynamic boundary layer is equal to (Prandtl number) n, where n is equal to =-2/3 -1 =-1/3 1 =-2/3 -1 =-1/3 1 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The heat of sun reaches to us according to Radiation None of these Conduction Convection Radiation None of these Conduction Convection ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Cork is a good insulator because it has Low density Atoms colliding frequency Porous body Free electrons Low density Atoms colliding frequency Porous body Free electrons ANSWER DOWNLOAD EXAMIANS APP
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