Heat and Mass Transfer The transfer of heat by molecular collision is smallest in None of these Liquids Gases Solids None of these Liquids Gases Solids ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The concept of overall coefficient of heat transfer is used in case of heat transfer by Radiation Conduction and convection Convection Conduction Radiation Conduction and convection Convection Conduction ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Upto the critical radius of insulation, Heat flux will decrease Added insulation will decrease heat loss Convective heat loss will be less than conductive heat loss Added insulation will increase heat loss Heat flux will decrease Added insulation will decrease heat loss Convective heat loss will be less than conductive heat loss Added insulation will increase heat loss 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 One Four Three Two One Four Three Two ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The expression Q = Ï AT4 is called Joseph-Stefan equation Stefan-Boltzmann equation Newton Reichmann equation Fourier equation Joseph-Stefan equation Stefan-Boltzmann equation Newton Reichmann equation Fourier equation 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
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