Heat Transfer For concentrating an aqueous solution of a material like anhydrous Na₂SO₄, whose solubility decreases with rise in temperature, the most suitable evaporator is a __________ evaporator. Vacuum High pressure Backward feed None of these Vacuum High pressure Backward feed None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a shell and tube heat exchanger, square pitch compared to triangular pitch Gives a higher shell side pressure drop Gives a lower shell side pressure drop None of these Can pack more surface area into a shell of given diameter Gives a higher shell side pressure drop Gives a lower shell side pressure drop None of these Can pack more surface area into a shell of given diameter ANSWER DOWNLOAD EXAMIANS APP
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 10 100 0.5 2 10 100 0.5 2 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Shell side pressure drop in a shell and tube heat exchanger does not depend upon the Viscosity, density & mass velocity of shell side fluid Baffle spacing & shell diameter Tube diameter & pitch None of these Viscosity, density & mass velocity of shell side fluid Baffle spacing & shell diameter Tube diameter & pitch None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Agitated film evaporator is suitable for concentrating __________ liquids. Viscous Foaming Corrosive Very thin Viscous Foaming Corrosive Very thin ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in temperature, the thermal conductivity of a gas May increase or decrease depending on the type of gas Increases Remains same Decreases May increase or decrease depending on the type of gas Increases Remains same Decreases ANSWER DOWNLOAD EXAMIANS APP
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