Heat Transfer The equation, Nst = f/2, is the __________ analogy. None of these Reynolds Colburn Prandtl None of these Reynolds Colburn Prandtl ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thickness of thermal boundary layer is more compared to that of hydrodynamic boundary layer, when the value of Prandtl number is > 5 > 1 1 < 1 > 5 > 1 1 < 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For a perfectly transparent surface (like gases), the Transmissivity = 1 All of these Reflectivity = 0 Absorptivity = 0 Transmissivity = 1 All of these Reflectivity = 0 Absorptivity = 0 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The outlet temperature of cooling water in a heat exchanger is generally not allowed to exceed above 50°C in industrial practice mainly to avoid Decrease in heat exchanger efficiency Uneconomic LMTD Its evaporation loss Excessive corrosion Decrease in heat exchanger efficiency Uneconomic LMTD Its evaporation loss Excessive corrosion ANSWER DOWNLOAD EXAMIANS APP
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 Agitated film evaporator is suitable for concentrating __________ liquids. Very thin Viscous Corrosive Foaming Very thin Viscous Corrosive Foaming ANSWER DOWNLOAD EXAMIANS APP
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