Mass Transfer The humid volume may be increased by increasing the Both A & B Humidity at constant temperature Neither A nor B Temperature at constant humidity Both A & B Humidity at constant temperature Neither A nor B Temperature at constant humidity ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Plate towers are preferred to packed towers, when large temperature changes are involved, because of the reason that the Pressure drop in the equipment will be very high Packing may be crushed due to thermal expansion/contraction of the components of the equipments Viscosity variation of the fluids may cause channeling/flooding None of these Pressure drop in the equipment will be very high Packing may be crushed due to thermal expansion/contraction of the components of the equipments Viscosity variation of the fluids may cause channeling/flooding None of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Use of raschig rings in place of crushed stones as packing in packed beds (other things being same) Increases pressure drop, decreases surface area Decreases pressure drop, decreases surface area Increases pressure drop, increases surface area Decreases pressure drop, increases surface area Increases pressure drop, decreases surface area Decreases pressure drop, decreases surface area Increases pressure drop, increases surface area Decreases pressure drop, increases surface area ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Prandtl number for water at 20°C is about 150 7 70 0.7 150 7 70 0.7 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Blowdown in a cooling tower Means discarding a small fraction of circulating water to prevent and limit the concentration of salt and impurities All of these Increases the scale forming tendencies of water Is undesirable Means discarding a small fraction of circulating water to prevent and limit the concentration of salt and impurities All of these Increases the scale forming tendencies of water Is undesirable ANSWER DOWNLOAD EXAMIANS APP
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