Heat and Mass Transfer Which of the following property of air does not increase with rise in temperature? Dynamic viscosity Thermal conductivity Thermal diffusivity Density Dynamic viscosity Thermal conductivity Thermal diffusivity 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 caused by some mechanical means, is known as Conduction Radiation Free convection Forced convection Conduction Radiation Free convection Forced convection ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer In case of liquids and gases, the heat transfer takes place according to Radiation Convection Conduction None of these Radiation Convection Conduction None of these ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer When heat is transferred from one particle of hot body to another by actual motion of the heated particles, it is referred to as heat transfer by Conduction Conduction and convection Convection Radiation Conduction Conduction and convection Convection Radiation ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Thermal diffusivity is a All of these Function of temperature Dimensionless parameter Physical property of a substance All of these Function of temperature Dimensionless parameter Physical property of a substance ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Two long parallel surfaces each of emissivity 0.7 are maintained at different temperatures and accordingly have radiation heat exchange between them. It is desired to reduce 75% of the radiant heat transfer by inserting thin parallel shields of emissivity 1 on both sides. The number of shields should be Two Four Three One Two Four Three One ANSWER DOWNLOAD EXAMIANS APP
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