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Process Equipment and Plant Design

Process Equipment and Plant Design
Equivalent diameter for heat transfer calculation for a duct of square cross-section having each side as 'd' will be

√(2d)
√(2πd)
√d
D

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Process Equipment and Plant Design
In case of bubble cap distillation column of diameter greater than 1.2 metres, the cap diameter is roughly about __________ cms.

30
35
10
20

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Process Equipment and Plant Design
The operating pressure drop range in a bag filter is about __________ mm water gauge.

50-150
1500-2500
500-1500
43961

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Process Equipment and Plant Design
Back-trapping in a distillation column results due to

Low reflux ratio
High gas velocity
Excessive liquid gradient over the tray
Low gas velocity

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Process Equipment and Plant Design
In inclined long tube vertical evaporators, the tubes are inclined at an angle of

15°
45°
60°
90°

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Process Equipment and Plant Design
The thickness of heat transfer plates used in the plate type heat exchanger ranges from __________ mm, pressed in a single piece provided with grooves & corrugations.

3.5 to 7.0
44055
0.3 to 0.8
1.25 to 3.125

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