Mass Transfer With increase in the mass velocity of the gas, the rate of drying during the constant rate period __________ , if the conduction and radiation through the solid are negligible. Increases linearly Remains same Decreases Increases Increases linearly Remains same Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The Schmidt number which is defined as, μ/ρ D, is the ratio of the Momentum diffusivity to the mass dif-fusivity Thermal diffusivity to the mass diffusivity None of these Momentum diffusivity to the thermal diffusivity Momentum diffusivity to the mass dif-fusivity Thermal diffusivity to the mass diffusivity None of these Momentum diffusivity to the thermal diffusivity ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The wet and 'dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be __________ °C. 25 > 25 < 25 -25 25 > 25 < 25 -25 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Lewis number, which is important in problems involving simultaneous heat and mass transfer, is the ratio of Thermal diffusivity to mass diffusivity Mass diffusivity to momentum diffusivity Momentum diffusivity to thermal diffusivity None of these Thermal diffusivity to mass diffusivity Mass diffusivity to momentum diffusivity Momentum diffusivity to thermal diffusivity None of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Tower diameter may be decreased by Using higher reflux ratio Increasing the vapour flow rate Increasing the liquid flow rate Use of increased tray spacing Using higher reflux ratio Increasing the vapour flow rate Increasing the liquid flow rate Use of increased tray spacing ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer During drying operation, it is easier to remove the __________ moisture. Equilibrium Critical Bound Unbound Equilibrium Critical Bound Unbound ANSWER DOWNLOAD EXAMIANS APP
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