Heat and Mass Transfer Thermal diffusivity is Function of temperature A dimensionless parameter A physical property of the material Used as mathematical model Function of temperature A dimensionless parameter A physical property of the material Used as mathematical model ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The rate of heat flow through a body is Q = [kA (Tâ - Tâ)]/x. The term x/kA is known as Thermal coefficient None of these Thermal resistance Thermal conductivity Thermal coefficient None of these Thermal resistance Thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The heat is transferred by conduction, convection and radiation in Melting of ice Boiler furnaces Condensation of steam in condenser None of these Melting of ice Boiler furnaces Condensation of steam in condenser None of these ANSWER DOWNLOAD EXAMIANS APP
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 Both convection and conduction Radiation Convection Conduction Both convection and conduction Radiation Convection Conduction ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The thickness of thermal and hydrodynamic boundary layer is equal if Prandtl number is Greater than one Equal to Nusselt number Less than one Equal to one Greater than one Equal to Nusselt number Less than one Equal to one ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The amount of heat flow through a body by conduction is Directly proportional to the surface area of the body All of these Directly proportional to the temperature difference on the two faces of the body Dependent upon the material of the body Directly proportional to the surface area of the body All of these Directly proportional to the temperature difference on the two faces of the body Dependent upon the material of the body ANSWER DOWNLOAD EXAMIANS APP
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