Heat Transfer The characteristic dimensionless groups for heat transfer to a fluid flowing through a pipe in laminar flow are Nu, Gz Nu, Pr Re.Gz Nu, Pr, Re Nu, Gz Nu, Pr Re.Gz Nu, Pr, Re ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Agitated film evaporator is suitable for concentrating __________ liquids. Very thin Viscous Foaming Corrosive Very thin Viscous Foaming Corrosive ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Maximum heat transfer rate is obtained in __________ flow. Turbulent Laminar Creeping Transition region Turbulent Laminar Creeping Transition region ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A 10 cm dia steam pipe, carrying steam at 180°C, is covered with an insulation (conductivity = 0.6 W/m.°C). It losses heat to the surroundings at 30°C. Assume a heat transfer co-efficient of 0.8 W/m².°C for heat transfer from surface to the surroundings. Neglect wall resistance of the pipe and film resistance of steam. If the insulation thickness is 2 cms, the rate of heat loss from this insulated pipe will be Less than that of the uninsulated steam pipe Greater than that for uninsulated steam pipe Equal to that of the uninsulated steam pipe Less than the steam pipe with 5 cms insulation Less than that of the uninsulated steam pipe Greater than that for uninsulated steam pipe Equal to that of the uninsulated steam pipe Less than the steam pipe with 5 cms insulation ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Overall heat transfer co-efficient for cooling of hydrocarbons by water is about 50 -100 Kcal/hr.m².°C 50 -100 W/m² . °K 50 -100 BTU/hr. ft.2°F 1000 - 1500 BTU/hr. ft.2°F 50 -100 Kcal/hr.m².°C 50 -100 W/m² . °K 50 -100 BTU/hr. ft.2°F 1000 - 1500 BTU/hr. ft.2°F ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Forced circulation evaporators are normally used for concentrating liquids having High viscosity Both A & B Neither A nor B Scaling characteristics High viscosity Both A & B Neither A nor B Scaling characteristics ANSWER DOWNLOAD EXAMIANS APP
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