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Process Equipment and Plant Design

Process Equipment and Plant Design
With increase in gas flow rate to fabric surface area ratio (Nm³/hr/m² fabric surface area), the size & the cost of a bag filter

None of these
Remain unaffected
Decreases
Increases

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Process Equipment and Plant Design
In actual operation of distillation column, the vapour is not distributed uniformly among the bubble caps, primarily because of the

Lower skirt clearance
Lower static submergence
Small downcomer liquid seal
Liquid gradient on the tray

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Process Equipment and Plant Design
Low pressure steam (with saturation temperature between 105 to 120°C) is usually used in the vacuum evaporators, which normally employ a vacuum of about __________ mm Hg (referred to a 760 mm mercury barometer).

250
650
750
450

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Process Equipment and Plant Design
Maximum plate efficiency is achieved in case of __________ flow.

Cascade
Reverse
Split
Cross

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Process Equipment and Plant Design
Friction factor for turbulent flow in a new pipe is given by

f = 25/NRe
f = 0.22 NRe0.05
f = 0.04/NRe0.16
f = 16/NRe

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Process Equipment and Plant Design
Minimum tube pitch recommended for shell and tube heat exchangers is about __________ times the outside diameter of the tube.

1.25
2.5
1.75
3.5

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