Heat and Mass Transfer In convection heat transfer from hot flue gases to water tube, even though flow may be turbulent, a laminar flow region (boundary layer of film) exists close to the tube. The heat transfer through this film takes place by Conduction Both convection and conduction Radiation Convection Conduction Both convection and conduction Radiation Convection ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer A perfect black body is one which Is black in colour Absorbs heat radiations of all wave lengths falling on it Transmits all heat radiations Reflects all heat Is black in colour Absorbs heat radiations of all wave lengths falling on it Transmits all heat radiations Reflects all heat ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Joule sec is the unit of Planck's constant Thermal conductivity Kinematic viscosity Universal gas constant Planck's constant Thermal conductivity Kinematic viscosity Universal gas constant ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Moisture would find its way into insulation by vapour pressure unless it is prevented by High vapour pressure A vapour seal High thickness of insulation Less thermal conductivity insulator High vapour pressure A vapour seal High thickness of insulation Less thermal conductivity insulator ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The critical radius is the insulation radius at which the resistance to heat flow is Zero Minimum Maximum None of these Zero Minimum Maximum None of these ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The transfer of heat by molecular collision is known as Radiation Conduction Convection None of these Radiation Conduction Convection None of these ANSWER DOWNLOAD EXAMIANS APP
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