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Process Equipment and Plant Design

Process Equipment and Plant Design
In chemical process equipments, the conical bottom heads used, usually has an apex angle of

20°
60°
40°
80°

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Process Equipment and Plant Design
Optimum reflux ratio in a continuous distillation column is determined by the

None of these
Flooding limit of the column
Maximum permissible vapour velocity
Total cost consideration (fixed cost of the column plus the cooling water & steam cost)

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Process Equipment and Plant Design
In a cylinderical vessel subjected to internal pressure, the longitudinal stress σL and the circumferential stress, σh are related by

σh = σL
σh = σL/2
σh = 2 σL
No relation exists

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Process Equipment and Plant Design
A rivetted joint does not fail by __________ of rivets.

Tearing of the plate across a row
Tearing
Shearing
None of these

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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.

44055
0.3 to 0.8
3.5 to 7.0
1.25 to 3.125

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Process Equipment and Plant Design
Excessive liquid gradient on a tray may result in the

Back trapping
Maldistribution of gas
Gas blowing beneath cap skit
All of these

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