Heat Transfer Value of Nusselt number [Nu = (hD/k)] for the heat transfer by conduction from a droplet or a spherical particle to a surrounding stagnant film is 100 10 0.5 2 100 10 0.5 2 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With the increase of temperature, the Col-burn jH factor Remains unchanged May increase or decrease ; depending on temperature Decreases Increases Remains unchanged May increase or decrease ; depending on temperature Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For gases, the thermal conductivity increases with temperature rise. For liquids, with increase in concentration, its thermal conductivity generally Increases Remains unchanged Increases exponentially Decreases Increases Remains unchanged Increases exponentially Decreases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Dietus-Boelter equation cannot be used for molten metals mainly due to its very low viscosity Prandtl number thermal conductivity Grashoff number viscosity Prandtl number thermal conductivity Grashoff number ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A hollow sphere and a solid sphere of the same material and equal radii are heated to the same temperature. In this case, Both the spheres will emit equal amount of radiation per unit time in the beginning The cooling rate will be the same for the two spheres and hence the two spheres will have equal temperatures at any instant Both will absorb equal amount of radiation from the surrounding in the beginning Both B & C Both the spheres will emit equal amount of radiation per unit time in the beginning The cooling rate will be the same for the two spheres and hence the two spheres will have equal temperatures at any instant Both will absorb equal amount of radiation from the surrounding in the beginning Both B & C ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The Graetz number is concerned with the mass transfer between a gas and a liquid heat transfer in laminar flow heat transfer in turbulent flow absorption with chemical reaction mass transfer between a gas and a liquid heat transfer in laminar flow heat transfer in turbulent flow absorption with chemical reaction ANSWER DOWNLOAD EXAMIANS APP
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