Heat Transfer A diathermaneous substance __________ the thermal radiation completely. Transmits Reflects Absorbs None of these Transmits Reflects Absorbs None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in the distance between the heat source and the object receiving the heat, the radiation heat transfer Increases Increases exponentially Decreases Remains unaffected Increases Increases exponentially Decreases Remains unaffected ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The heat transfer co-efficient in film type condensation is __________ that for dropwise condensation. Half Is same as Lower than Greater than Half Is same as Lower than Greater than ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Wavelength corresponding to the maximum energy is inversely proportional to the absolute temperature. This is __________ law. Kirchoffs Wien's Dalton's Stefan's Kirchoffs Wien's Dalton's Stefan's 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 0.15 0.55 555 55.5 0.15 0.55 555 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The non-dimensional temperature gradient in a liquid at the wall of a pipe is the Prandtl number Schmidt number Nusselt number Heat flux Prandtl number Schmidt number Nusselt number Heat flux ANSWER DOWNLOAD EXAMIANS APP
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