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Process Equipment and Plant Design

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

Laminar flow
Eddy diffusivity = 0
Plug flow
Complete back mixing

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Process Equipment and Plant Design
Slope of countercurrent flow rotary drier is in the range of __________ meter/metre.

0 to 0.8
0 to 1.5
0 to 2.2
0 to 0.08

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Process Equipment and Plant Design
The approximate liquid depth in an agitation tank is equal to (where, d = tank diameter)

0.75 d
D
2 d
0.5 d

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Process Equipment and Plant Design
In packed absorption tower, onset of flooding usually occurs at a pressure drop of about __________ mm of water column per metre height of packing.

50-75
750-1000
25-50
200-250

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Process Equipment and Plant Design
The minimum plate spacing in most of the pertroleum refinery distillation columns (of dia > 3 ft) is normally __________ inches.

12
34
18
6

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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
Floating head tube sheet
Either A or B

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