Heat and Mass Transfer Which of the following is a case of steady state heat transfer? None of these Heating of building in winter Air preheaters I.C. engine None of these Heating of building in winter Air preheaters I.C. engine ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Cork is a good insulator because it has Low density Porous body Free electrons Atoms colliding frequency Low density Porous body Free electrons Atoms colliding frequency ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The unit of Stefan Boltzmann constant is watt/cm2 °K⁴ watt/cm4 °K watt/cm3 °K watt2/cm °K⁴ watt/cm2 °K⁴ watt/cm4 °K watt/cm3 °K watt2/cm °K⁴ ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer A perfect black body is one which Is black in colour Transmits all heat radiations Reflects all heat Absorbs heat radiations of all wave lengths falling on it Is black in colour Transmits all heat radiations Reflects all heat Absorbs heat radiations of all wave lengths falling on it ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Two plates spaced 150 mm apart are maintained at 1000°C and 70°C. The heat transfer will take place mainly by Radiation Forced convection Free convection Convection Radiation Forced convection Free convection Convection 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
EXAMIANS