Mass Transfer A solid material shows case hardening properties while drying. Which of the following should be controlled to control the drying process? Temperature of the solid Relative humidity of outlet air Flow rate of inlet air Humidity of inlet air Temperature of the solid Relative humidity of outlet air Flow rate of inlet air Humidity of inlet air ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The vapour pressure exerted by the moisture contained in a wet solid depends upon the All of these Nature of the moisture Temperature Nature of the solid All of these Nature of the moisture Temperature Nature of the solid ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following has the same dimension as mass diffusivity? Momentum flux Kinematic viscosity Thermal diffusivity Both Momentum flux & Kinematic viscosity Momentum flux Kinematic viscosity Thermal diffusivity Both Momentum flux & Kinematic viscosity ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Mass transfer co-efficient 'K' according to penetration theory varies with mass dif-fusivity as 1/D D D1.5 D0.5 1/D D D1.5 D0.5 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer With increase in absolute humidity, the dew point of an unsaturated mixture of air and water vapor (at constant pressure and temperature) Decreases Increases Remains unchanged Decreases linearly Decreases Increases Remains unchanged Decreases linearly ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In the constant rate period of the rate of drying curve for batch drying, Surface evaporation of unbound moisture occurs Rate of drying decreases abruptly None of these Cracks develop on the surface of the solid Surface evaporation of unbound moisture occurs Rate of drying decreases abruptly None of these Cracks develop on the surface of the solid ANSWER DOWNLOAD EXAMIANS APP
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