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Process Equipment and Plant Design

Process Equipment and Plant Design
Reflux ratio variation in a distillation column is between

None of these
Minimum and infinity
Zero and infinity
Zero and one

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Process Equipment and Plant Design
In perforated plate towers, the

Total hole area may be around 6 to 15% of tower cross-sectional area
Hole sizes may be around 1/8" or 3/16"
Pressure drop is less compared is similar bubble cap towers
All of these

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Process Equipment and Plant Design
With increase in temperature drop (in a shell and tube heat exchanger), the LMTD correction factor, FT

Increases linearly
Increases very rapidly
Decreases very rapidly
Remains constant

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Process Equipment and Plant Design
__________ tray arrangement is recommended for distillation column having diameter upto 4 ft.

Cascade
Radial flow
Cross flow
Split flow

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Process Equipment and Plant Design
Value of Peclet number = ∞, is the representative of

Plug flow
Eddy diffusivity = 0
Laminar flow
Complete back mixing

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Process Equipment and Plant Design
Circumferential (hoop) stress in a thin cylindrical vessel under internal pressure is __________ the longitudinal stress.

Twice
Equal to
Eight times
Half

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