Heat Transfer A hot body will radiate heat most rapidly, if its surface is Black & polished Black & rough White & polished White & rough Black & polished Black & rough White & polished White & rough ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a laboratory test run, the rate of drying was found to be 0.5 x 10-3 kg/m².s, when the moisture content reduced from 0.4 to 0.1 on dry basis. The critical moisture content of the material is 0.08 on a dry basis. A tray dryer is used to dry 100 kg (dry basis) of the same material under identical conditions. The surface area of the material is 0.04 m²/kg of dry solid. The time required (in seconds) to reduce the moisture content of the solids from 0.3 to 0.2 (dry basis) is 4000 2000 5000 6000 4000 2000 5000 6000 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In forced convection, the Nusselt number is a function of Re and Pr Re and Gr Re and Sc Pr and Gr Re and Pr Re and Gr Re and Sc Pr and Gr ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer An insulator should have Low thermal conductivity High thermal conductivity Less resistance to heat flow A porous structure Low thermal conductivity High thermal conductivity Less resistance to heat flow A porous structure ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat flux through several resistances in series in analogous to the current flowing through several. capacitors in series none of the listed here resistances in parallel resistances in series capacitors in series none of the listed here resistances in parallel resistances in series ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in temperature, the thermal conductivity of steel Increases exponentially Increases Remains unchanged Decreases Increases exponentially Increases Remains unchanged Decreases ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS