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Process Equipment and Plant Design

Process Equipment and Plant Design
__________ is the determining factor for the number of bubble caps to be used per tray.

Liquid load
Tray diameter
Vapor load
Permissible slot velocity

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Process Equipment and Plant Design
Wall thickness of schedule 40 pipe as compared to that of schedule 80 pipe is

Cither A or B; depends upon the I.D. of the pipe
Same
Less
More

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Process Equipment and Plant Design
Thin spherical shells subjected to internal pressure, develop __________ stresses.

Neither A nor B
Both A & B
Circumferential
Radial

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Process Equipment and Plant Design
Log mean temperature difference in case of multi-pass shell and tube heat exchanger is always

Less than arithmetic mean value
More than arithmetic mean value
Both B & C
More than geometric mean value

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Process Equipment and Plant Design
For laminar flow (NRe < 2100) in steel pipe, the optimum inside pipe diameter is given by

Di, opt = 3 Q0.36 . ρ1.86 μ0.08
Di, opt = 3 Q0.36 ρ0.18
Di, opt = 7.6 Q0.36 . ρ0.9
Di, opt = 3.9 Q0.45 . ρ0.23

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Process Equipment and Plant Design
Cylindrical storage tanks used for the storage of volatile liquids (e.g., naphtha) have __________ roofs.

Fixed
Flat
Conical
Floating

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