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Process Equipment and Plant Design

Process Equipment and Plant Design
In case of a shell and tube heat exchanger, the minimum shell thickness for carbon steel (inclusive of corrosion allowance) depends on shell diameter and is in the range of __________ mm.

43895
44183
43962
44058

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Process Equipment and Plant Design
Elastic failure of a material occurs, when the tensile stress equals yield strength, yield point or the elastic limit. Also, the elastic failure occurs according to maximum strain theory, when the maximum tensile strain equals (where, σ = yield strength and E = modulus of elasticity)

E
E/σ
Σ/E
Σ

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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?

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

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Process Equipment and Plant Design
The longitudinal stress induced in a thin walled cylinderical vessel under internal pressure is

pd/t
pd/2t
pd/4t
pd/8t

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Process Equipment and Plant Design
Reflux ratio variation in a distillation column is between

Zero and infinity
None of these
Minimum and infinity
Zero and one

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Process Equipment and Plant Design
Vertical vessels are not supported by

Brackets
Skirts
Saddles
Columns

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