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Process Equipment and Plant Design

Process Equipment and Plant Design
Saddle supports are used for supporting __________ vessels.

Tall vertical
Horizontal cylinderical
Thick spherical
Thick walled vertical

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

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

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Process Equipment and Plant Design
Where does the maximum tensile strength occur in a thick cylindrical vessel subjected to internal pressure?

At the mid thickness of the cylindrical wall
At the inner surface
None of these
At the outer surface

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

High gas velocity
Low gas velocity
Excessive liquid gradient over the tray
Low 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.

600
300
1000
1500

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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
1000-1500
20-40
43835

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