Heat and Mass Transfer The ratio of surface convection resistance to the internal conduction resistance is known as Prandtl number Stanton number Biot number Grashoff number Prandtl number Stanton number Biot number Grashoff number ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The thickness of thermal and hydrodynamic boundary layer is equal if Prandtl number is Less than one Equal to one Greater than one Equal to Nusselt number Less than one Equal to one Greater than one Equal to Nusselt number ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Metals are good conductors of heat because Their atoms collide frequently Their atoms are relatively far apart They have high density They contain free electrons Their atoms collide frequently Their atoms are relatively far apart They have high density They contain free electrons ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The concept of overall coefficient of heat transfer is used in case of heat transfer by Conduction Convection Radiation Conduction and convection Conduction Convection Radiation Conduction and convection ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The value of Prandtl number for air is about 1.7 0.7 0.3 0.1 1.7 0.7 0.3 0.1 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The rate of energy emission from unit surface area through unit solid angle, along a normal to the surface, is known as Emissivity Intensity of radiation Transmissivity Reflectivity Emissivity Intensity of radiation Transmissivity Reflectivity ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS