Heat and Mass Transfer All radiations in a black body are Absorbed Transmitted Refracted Reflected Absorbed Transmitted Refracted Reflected ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer In a heat exchanger with one fluid evaporating or condensing, the surface area required is least in Counter flow Parallel flow All of these Cross flow Counter flow Parallel flow All of these Cross flow 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 Forced convection Convection Radiation Free convection Forced convection Convection Radiation Free convection ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer According to Kirchoff's law, the ratio of emissive power to absorptivity for all bodies is equal to the emissive power of a Grey body Brilliant white polished body Black body Red hot body Grey body Brilliant white polished body Black body Red hot body ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Thermal conductivity of air with rise in temperature Remain constant May increase or decrease depending on temperature Decreases Increases Remain constant May increase or decrease depending on temperature Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Cork is a good insulator because it has Atoms colliding frequency Porous body Free electrons Low density Atoms colliding frequency Porous body Free electrons Low density ANSWER DOWNLOAD EXAMIANS APP
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