Heat Transfer Thickness of thermal boundary layer is more compared to that of hydrodynamic boundary layer, when the value of Prandtl number is 1 > 5 > 1 < 1 1 > 5 > 1 < 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Radiation energy is emitted by all the substances, which are above 100°C 0°K 0°C none of the listed here 100°C 0°K 0°C none of the listed here ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer If the baffle spacing in a shell and tube heat exchanger increases, then the Reynolds number of the shell side fluid Decreases Increases Remains unchanged Increases or decreases depending on number of shell passes Decreases Increases Remains unchanged Increases or decreases depending on number of shell passes ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Dropwise condensation occurs on __________ surfaces smooth clean clean and dirt free polished contaminated cooling smooth clean clean and dirt free polished contaminated cooling ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The absorptivity of a grey body at a given temperature __________ with increasing wavelength of radiation. Increases Remains constant Decreases May increase or decrease ; depends on the material Increases Remains constant Decreases May increase or decrease ; depends on the material ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the minimum absorptivity? Aluminium foil Coal dust Refractory bricks Iron plates Aluminium foil Coal dust Refractory bricks Iron plates ANSWER DOWNLOAD EXAMIANS APP
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