Heat Transfer Nucleate boiling is promoted None of these On rough surfaces In the absence of agitation On polished surfaces None of these On rough surfaces In the absence of agitation On polished surfaces ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The absorptivity of a body is equal to its emissivity under thermal equilibrium none of the listed here for circular bodies at a particular temperature under thermal equilibrium none of the listed here for circular bodies at a particular temperature ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat waves Can not pass through vacuum Both B and C Travel in straight line Can be reflected by a mirror Can not pass through vacuum Both B and C Travel in straight line Can be reflected by a mirror ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Overall heat transfer co-efficient for cooling of hydrocarbons by water is about 50 -100 BTU/hr. ft.2°F 50 -100 W/m² . °K 50 -100 Kcal/hr.m².°C 1000 - 1500 BTU/hr. ft.2°F 50 -100 BTU/hr. ft.2°F 50 -100 W/m² . °K 50 -100 Kcal/hr.m².°C 1000 - 1500 BTU/hr. ft.2°F 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. Backward feed Vacuum High pressure None of these Backward feed Vacuum High pressure None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Agitated film evaporator is suitable for concentrating __________ liquids. Viscous Very thin Corrosive Foaming Viscous Very thin Corrosive Foaming ANSWER DOWNLOAD EXAMIANS APP
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