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Process Equipment and Plant Design

Process Equipment and Plant Design
Le/D for fully open globe value may be around

10
25
300
75

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Process Equipment and Plant Design
Height of the flights in the rotary drier is in the range of

0.2 to 0.5 d
0.5 to 0.6 d
0.02 to 0.05 d
0.08 to 0.12 d

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Process Equipment and Plant Design
Scale up problem in design based on the similarity concept takes into account __________ similarity.

Geometrical
Kinematic
Dynamic
All of these

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Process Equipment and Plant Design
Two iron pipes of the same nominal diameter but different schedule numbers will have the same

Outside diameter
Wall thickness
Inside diameter
None of these

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Process Equipment and Plant Design
Liquid gradient over the tray results due to the

Low gas velocity
Resistance offered to flow of liquids by caps & risers and the flow of gas
Large plate spacing
Large reflux ratio

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Process Equipment and Plant Design
Angled baffles are preferred in the agitation tank to control the swirling action; if the viscosity of the liquid to be mixed is about 200 poise. However, the baffle may be completely eliminated for mixing liquids having viscoisty above __________ poise.

1500
1000
300
600

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