Heat Transfer A tank painted with which of the following coloured paints, would heat up maximum by radiation from sun? White paint Black paint Yellow paint Grey paint White paint Black paint Yellow paint Grey paint ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of heat flow by conduction for a cylindrical body with an internal heat source, the nature of temperature distribution is Hyperbolic None of these Parabolic Linear Hyperbolic None of these Parabolic Linear 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 555 55.5 0.15 0.55 555 55.5 0.15 0.55 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A perfect black body is a perfect __________ of radiation absorber none of the listed here emitter Both emitter & absorber absorber none of the listed here emitter Both emitter & absorber ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The Stefan-Boltzman constant depends on the None of these Temperature Surface Medium None of these Temperature Surface Medium ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Viscous & heat sensitive liquids are concentrated in __________ evaporators. Agitated film None of these Long tube Open pan Agitated film None of these Long tube Open pan ANSWER DOWNLOAD EXAMIANS APP
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