Heat Transfer Kirchoff s law applies to __________ radiation Both total & monochromatic total None of the listed here monochromatic Both total & monochromatic total None of the listed here monochromatic ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Crystallisation of solids from a homogeneous solution is a/an __________ process. Highly endothermic Exothermic Mildly endothermic None of these Highly endothermic Exothermic Mildly endothermic None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Arithmetic mean area can be used in heat transfer problem to calculate the heat flow by conduction through a cylinder which is Thick walled Thin walled having the value of Ao Ai/< 2 Both B and C Having the value of Ao/Ai > 2 Thick walled Thin walled having the value of Ao Ai/< 2 Both B and C Having the value of Ao/Ai > 2 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A hot body will radiate heat most rapidly, if its surface is White & polished White & rough Black & rough Black & polished White & polished White & rough Black & rough Black & polished ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For an ideal black body Absorptivity = 1 Transmissivity = 1 Emissivity = 0 Reflectivity = 1 Absorptivity = 1 Transmissivity = 1 Emissivity = 0 Reflectivity = 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A metal ball of radius 0.1 m at a uniform temperature of 90°C is left in air at 30°C. The density and the specific heat of the metal are 3000 kg/m³ and 0.4 kJ/kg.K respectively. The heat transfer co-efficient is 50 W/m².K Neglecting the temperature gradients inside the ball, the time taken (in hours) for the ball to cool to 60°C is 55.5 0.55 0.15 555 55.5 0.55 0.15 555 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS