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Process Equipment and Plant Design

Process Equipment and Plant Design
Removable connection of tubes to tube sheet is called

Nipple
Socket
Ferrule
Saddle

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

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

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Process Equipment and Plant Design
for couplings and unions would be

200
350
Negligible
60

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Process Equipment and Plant Design
The absorption factor is defined as (where, S₁ = slope of the equilibrium curve, S₂ = slope of the operating line)

S₁/S₂
S₁.S₂
S₂/S₁
1/S₁.S₂

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Process Equipment and Plant Design
Tubes are fixed to the tube sheet (a thick circular metallic plate) by the method of tube rolling and brazing (non-removable) or ferrule connection (removable). Thickness of the tube, sheet is normally __________ the outside diameter of the tube but in no case it should be less than 22 mm (7/8").

Half
Equal to
Three fourth
1.5 times

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Process Equipment and Plant Design
Poisson's ratio of a material is the ratio of unit lateral strain to the unit axial elongation within its elastic limit. The value of Poisson's ratio for structural and pressure vessel steel may be taken as

0.95
0.75
0.01
0.3

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