Process Equipment and Plant Design Which of the following packing materials provides for maximum mass transfer? Raschig rings Cross-partition rings Lessig rings All of these Raschig rings Cross-partition rings Lessig rings All of these ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The main purpose of providing stepping on the trays is to Increase the residence time Improve the flow condition Decrease the pressure drop Facilitate handling of large flow rate of liquid Increase the residence time Improve the flow condition Decrease the pressure drop Facilitate handling of large flow rate of liquid ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Normal screwed fittings are used for pipes upto a diameter of __________ inches. 7 3 5 1.5 7 3 5 1.5 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In seive plate column, holes are drilled or punched in sizes ranging from 2.5 to 12 mm (5 mm being widely used). The hole pitch is normally __________ times the hole diameter to give the required hole area. 2.5 to 4.0 0.5 to 1.5 10 to 15 5 to 10 2.5 to 4.0 0.5 to 1.5 10 to 15 5 to 10 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Poisson's ratio of a material is the ratio of unit lateral strain to the unit axial elongation within its elastic limit. The value of Poisson's ratio for structural and pressure vessel steel may be taken as 0.3 0.95 0.01 0.75 0.3 0.95 0.01 0.75 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In a shell and tube heat exchanger for a given heat transfer surface area, smaller diameter tubes are favoured as compared to larger diameter ones ; because the smaller diameter tubes None of these Are less prone to fouling Are easier to clean Can be fitted into a smaller shell diameter hence the cost of the heat exchanger would be less None of these Are less prone to fouling Are easier to clean Can be fitted into a smaller shell diameter hence the cost of the heat exchanger would be less ANSWER DOWNLOAD EXAMIANS APP
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