Process Equipment and Plant Design In a distillation column, the minimum residence time for liquid in the downspout is about __________ seconds. 8 80 1 180 8 80 1 180 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The optimum size ratio for two mixed reactors in series depends on the kinetics of the reaction and the conversion level. For reaction orders more than one, the Larger reactor should come first Smaller reactor should come first None of these Equal sized reactors are the best Larger reactor should come first Smaller reactor should come first None of these Equal sized reactors are the best 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 Called tube pitch Always less than the diameter of the tube None of these Called tube clearance Called tube pitch Always less than the diameter of the tube None of these Called tube clearance ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design What is the minimum recommended ligament for square pitch arrangement in case of heat exchangers? Equal to tube O.D 6.5 mm 6.5 cms Equal to tube I.D Equal to tube O.D 6.5 mm 6.5 cms Equal to tube I.D ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Value of Peclet number = ∞, is the representative of Laminar flow Complete back mixing Eddy diffusivity = 0 Plug flow Laminar flow Complete back mixing Eddy diffusivity = 0 Plug flow ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In a cylinderical vessel subjected to internal pressure, the longitudinal stress σL and the circumferential stress, σh are related by σh = σL/2 σh = 2 σL σh = σL No relation exists σh = σL/2 σh = 2 σL σh = σL No relation exists ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS