Mass Transfer To get high tray efficiency Liquid entrainment should be severe Time of contact between the two phases should be less Interfacial surface between liquid and gas phase should be large Gas velocity should be very low Liquid entrainment should be severe Time of contact between the two phases should be less Interfacial surface between liquid and gas phase should be large Gas velocity should be very low ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If the overall efficiency and Murphree plate efficiency are equal, then both the equilibrium and operating lines are Straight Neither A nor B Parallel Both A & B Straight Neither A nor B Parallel Both A & B ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively.The humidity of air sample expressed as kg of water vapour/kg of dry air is 0.079 0.048 0.152 0.122 0.079 0.048 0.152 0.122 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The drying time between fixed moisture contents within the 'constant rate period' is proportional to (assuming that drying occurs from all surfaces of the solid) (where, T = thickness of the solid ) T1.5 T T3 √T T1.5 T T3 √T ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Flights in a rotary dryer are provided to None of these Reduce the residence time of solid Lift and shower the solids thus exposing it thoroughly to the drying action of the gas Increase the residence time of the solid None of these Reduce the residence time of solid Lift and shower the solids thus exposing it thoroughly to the drying action of the gas Increase the residence time of the solid ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Bound moisture is that liquid which exerts an equilibrium vapor pressure __________ that of the pure liquid at the given temperature. Less than Equal to More than Either A or B; depends on the solid Less than Equal to More than Either A or B; depends on the solid ANSWER DOWNLOAD EXAMIANS APP
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