Heat and Mass Transfer Log mean temperature difference in case of counter flow compared to parallel flow will be Depends on other factors Same More Less Depends on other factors Same More Less 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 Conduction Radiation Both convection and conduction Convection Conduction Radiation Both convection and conduction Convection ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The heat is transferred by conduction, convection and radiation in Melting of ice None of these Condensation of steam in condenser Boiler furnaces Melting of ice None of these Condensation of steam in condenser Boiler furnaces 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 Four Three One Two Four Three One Two ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The thermal diffusivities for gases are generally More than those for liquids Less than those for liquids Dependent on the viscosity More than those for solids More than those for liquids Less than those for liquids Dependent on the viscosity More than those for solids ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Which of the following is a case of steady state heat transfer? None of these Heating of building in winter I.C. engine Air preheaters None of these Heating of building in winter I.C. engine Air preheaters ANSWER DOWNLOAD EXAMIANS APP
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