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Process Equipment and Plant Design

Process Equipment and Plant Design
The equivalent diameter for fluid flow through a channel of constant non-circular cross section of area 'A' is given by (where, P = perimeter of the channel in contact with the fluid)

4 A/P
A/P
4 P/A
√A

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Process Equipment and Plant Design
The normal range of velocity of water in pipes is __________ m/sec.

10-50
0.1-0.5
15-30
1-2

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Process Equipment and Plant Design
Hole diameter of the seive trays in the distillation column ranges from __________ mm.

4 to 8
L to 3
3 to 12.5
12.5 to 18.5

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Process Equipment and Plant Design
To avoid the tearing off the plate of an edge, the margin (i.e., the minimum distance from the centre of the rivet hole to the nearest edge of the plate) should be equal to

1.5 d
D
2.5 d
0.5 d

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Process Equipment and Plant Design
In case of a 'thin' pressure vessel, the ratio of its diameter to wall thickness is

> 20
> 10
< 10
30

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Process Equipment and Plant Design
Overall mass transfer co-efficient in case of absorption of __________ in water is based on the gas film co-efficient only, as the mass transfer process is gas film (phase) controlling.

SO₂
CO₂
NH₃
None of these

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