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Process Equipment and Plant Design

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

Circumferential
Neither A nor B
Radial
Both A & B

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Process Equipment and Plant Design
The dust collection efficiency of electrostatic precipitator increases with increase in the

Gas flow rate
Both A & B
Neither A nor B
Electrode area

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Process Equipment and Plant Design
Diameter of bubble caps used in high pressure columns is __________ as compared to that used in identical vacuum columns.

Less
Either A or B; no generalisation can be made
Same
More

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Process Equipment and Plant Design
The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about __________ mm of water column per metre height of packing.

100-150
20-40
1000-1500
43835

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Process Equipment and Plant Design
What is the slope of the feed line, if the feed to a distillation column is a saturated liquid?

∞
< 1
> 1

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Process Equipment and Plant Design
A perforated plate has holes of diameter dh arranged in a pitch ph. Each hole has a tube of I.D. dt passing through it. The ligament efficiency is given by

(ph - dh . dt/2)/ph
(ph - dh)/ph
(ph - dt)/ph
(ph - dh)/dh

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