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Process Equipment and Plant Design

Process Equipment and Plant Design
Smaller sized packings are generally dumped to the packed columns, and the large ones of size greater than __________ mm are stacked individually, which provides better control over bed porosity and offers lower gas pressure drop.

75
150
50
25

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Process Equipment and Plant Design
Thin spherical shells subjected to internal pressure, develop __________ stresses.

Neither A nor B
Radial
Both A & B
Circumferential

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Process Equipment and Plant Design
The testing pressure of storage tanks and pressure vessels designed as per Indian standard codes should be about __________ times.the design pressure.

1.5 to 2
3 to 4
4 to 5
>5

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Process Equipment and Plant Design
for couplings and unions would be

350
60
Negligible
200

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Process Equipment and Plant Design
In a multipass shell and tube heat exchanger, the problem of differential expansion between the shell and tube passes is taken care of by using a

Neither A nor B
U-bend
Either A or B
Floating head tube sheet

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Process Equipment and Plant Design
Value of Peclet number = ∞, is the representative of

Eddy diffusivity = 0
Laminar flow
Plug flow
Complete back mixing

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