Heat and Mass Transfer The amount of heat flow through a body by conduction is All of these Directly proportional to the temperature difference on the two faces of the body Directly proportional to the surface area of the body Dependent upon the material of the body All of these Directly proportional to the temperature difference on the two faces of the body Directly proportional to the surface area of the body Dependent upon the material of the body ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The critical thickness of insulation for a sphere is h₀/2k 2k/h₀ h₀/k k/h₀ h₀/2k 2k/h₀ h₀/k k/h₀ ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Which of the following property of air does not increase with rise in temperature? Thermal conductivity Thermal diffusivity Dynamic viscosity Density Thermal conductivity Thermal diffusivity Dynamic viscosity Density ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The process of heat transfer from one particle of the fluid to another by the actual movement of the fluid particles due to difference of density caused by temperature of the particle is known as Free convection Forced convection Radiation Conduction Free convection Forced convection Radiation Conduction ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Thermal conductivity of air at room temperature in kcal/m hr °C is of the order of 0.02 0.1 0.01 0.002 0.02 0.1 0.01 0.002 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The rate of heat flow through a body is Q = [kA (T₁ - T₂)]/x. The term x/kA is known as Thermal conductivity None of these Thermal resistance Thermal coefficient Thermal conductivity None of these Thermal resistance Thermal coefficient ANSWER DOWNLOAD EXAMIANS APP
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