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Process Equipment and Plant Design

Process Equipment and Plant Design
For pipe flows, head is proportional to __________ at constant capacity (where D = pipe diameter ).

1/D⁵
1/D
D²
1/D²

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Process Equipment and Plant Design
Le/D for a Tee (used as elbow, entering run) would be around

350
200
5
60

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Process Equipment and Plant Design
Apex angle of conical heads used in the bottom heads of chemical process equipments is usually

45°
30°
60°
75°

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Process Equipment and Plant Design
Accidents in chemical plants are mostly due to

Faulty operating procedures
Failure of equipments
Improper layout of the equipments
Inadequate equipment design

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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.

20-40
43835
100-150
1000-1500

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Process Equipment and Plant Design
In most of the shell and tube heat exchangers, the tube pitch is generally __________ the tube diameter.

Less than
2.5 times
1.25-1.50 times
One-fourth of

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