Process Equipment and Plant Design
For given number of passes, pitch & tube diameter, the maximum number of tubes that can be accommodated in a shell of tripled inside diameter will be __________ times.

Considerably more than 9
Considerably less than 9
About 3
About 9

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Process Equipment and Plant Design
Pick out the wrong statement pertaining to shell and tube heat exchanger.

Clearance between shell & baffles and between tube & baffles should be minimum to avoid by-passing of the fluid, but it should be enough to permit the removal of tube bundle
Tie rods are fixed at one end in the tube sheet by making blind holes and the minimum number of tie rods is 4 with at least 10 mm diameter
Baffles are supported independently of the tubes by tie rods and positioned by spacers
Bracket supports are used for horizontal shell, while saddle support is used for vertical shell

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Process Equipment and Plant Design
In a bag filter, the pressure drop increases directly as the

None of these
Density of the gas, but is independent of the viscosity of the gas
Density of the gas and inversely as viscosity of the gas
Viscosity of the gas and inversely as density of the gas

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