Process Equipment and Plant Design The difficulty of liquid distribution in packed towers is accentuated, when the ratio of tower diameter to packing diameter is > 7 < 15 > 20 < 50 < 7 < 30 > 7 < 15 > 20 < 50 < 7 < 30 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Ratio of tube length to shell diameter for a shell and tube heat exchanger is < 4 : 1 for gas-gas exchangers 8 : 1 to 12 : 1 for both liquid-liquid and gas-gas heat exchangers Both B & C 4 : 1 to 8 : 1 for liquid-liquid exchanger < 4 : 1 for gas-gas exchangers 8 : 1 to 12 : 1 for both liquid-liquid and gas-gas heat exchangers Both B & C 4 : 1 to 8 : 1 for liquid-liquid exchanger ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In the allocated cap area, bubble caps are generally arranged on equilateral triangular pitch. Number of caps fixed on a plate is with a Neither A nor B Cap pitch of 1.3-2 times the cap diameter Clearance of 25-75 mm Either A or B Neither A nor B Cap pitch of 1.3-2 times the cap diameter Clearance of 25-75 mm Either A or B ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The ratio of volumes of the mixed reactor to the plug flow reactor (for identical feed composition, flow rate, conversion, and for all positive reaction orders) is always Equal to the order of reaction 1 >1 < 1 Equal to the order of reaction 1 >1 < 1 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design A single pass air heater is connected to a two pass unit. For the air flow rate and other conditions remaining the same, the film heat transfer co-efficient for air will vary in the ratio of 2 None of these 20.8 20.2 2 None of these 20.8 20.2 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The wall thickness for a large high pressure pipeline is determined by the consideration of the Axial tensile stress in the pipe Temperature stresses Circumferential pipewall tension Forces exerted by static and dynamic action at bends Axial tensile stress in the pipe Temperature stresses Circumferential pipewall tension Forces exerted by static and dynamic action at bends ANSWER DOWNLOAD EXAMIANS APP
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