Heat and Mass Transfer Unit of thermal conductivity in M.K.S. units is K calm/hr °C K cal/kg m² °C K cal m/hr m² °C K cal/hr m² °C K calm/hr °C K cal/kg m² °C K cal m/hr m² °C K cal/hr m² °C ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer If the temperature of a solid surface changes form 27°C to 627°C, then its emissive power changes in the ratio of 3 9 81 270 3 9 81 270 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer 40% of incident radiant energy on the surface of a thermally transparent body is reflected back. If the transmissivity of the body be 0.15, then the emissivity of surface is 0.55 0.4 0.45 0.75 0.55 0.4 0.45 0.75 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Thermal conductivity of wood depends on Temperature Density All of these Moisture Temperature Density All of these Moisture ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Wien’s law states that the wave length corresponding to ________ is proportional to the absolute temperature. Minimum energy None of these Both (A) and (B) Maximum energy Minimum energy None of these Both (A) and (B) Maximum energy ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Moisture would find its way into insulation by vapour pressure unless it is prevented by A vapour seal Less thermal conductivity insulator High thickness of insulation High vapour pressure A vapour seal Less thermal conductivity insulator High thickness of insulation High vapour pressure ANSWER DOWNLOAD EXAMIANS APP
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