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 Pick out the wrong statement pertaining to a shell and tube heat exchanger. The maximum value of baffle spacing is equal to the I.D. of the shell The maximum unsupported tube span is generally about 75 times tube diameter, but is reduced to about 60 times for aluminium, copper & alloys of these Disk and doughnut baffle is the most commonly used baffle The minimum value of baffle spacing is 50 mm The maximum value of baffle spacing is equal to the I.D. of the shell The maximum unsupported tube span is generally about 75 times tube diameter, but is reduced to about 60 times for aluminium, copper & alloys of these Disk and doughnut baffle is the most commonly used baffle The minimum value of baffle spacing is 50 mm ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Optimum reflux ratio in a continuous distillation column is determined by the Flooding limit of the column Maximum permissible vapour velocity Total cost consideration (fixed cost of the column plus the cooling water & steam cost) None of these Flooding limit of the column Maximum permissible vapour velocity Total cost consideration (fixed cost of the column plus the cooling water & steam cost) None of these ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In a shell and tube heat exchanger, the shortest centre to centre distance between the adjacent tubes is Always less than the diameter of the tube Called tube pitch Called tube clearance None of these Always less than the diameter of the tube Called tube pitch Called tube clearance None of these ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The diameter of a propeller agitator used in agitation tank ranges from __________ percent of the tank diameter and its peripherial speed is normally 300 to 500 metres/minute. 15 to 30 5 to 10 40 to 50 55 to 75 15 to 30 5 to 10 40 to 50 55 to 75 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the __________ decreases. Running cost of cooling water for condenser Vapour & liquid load both Running cost of steam for reboiler Fixed charges initially Running cost of cooling water for condenser Vapour & liquid load both Running cost of steam for reboiler Fixed charges initially ANSWER DOWNLOAD EXAMIANS APP
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