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Process Equipment and Plant Design

Process Equipment and Plant Design
The raio, (properller agitator dia/tank dia) is normally taken as

0.60-0.90
0.75-0.85
0.5-0.65
0.15-030

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Process Equipment and Plant Design
In a pressure vessel containing multiple openings of various dimensions at different parts, stress concentration at the edges of the opening is maximum which becomes negligibly small beyond the area covered by __________ times the hole diameter.

Ten
Two
Five
Twenty

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Process Equipment and Plant Design
The minimum shell thickness for tank ≤ 15 metres diameter is limited to __________ mm, for reasons of elastic stability.

5
2
15
10

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Process Equipment and Plant Design
In seive plate column, holes are drilled or punched in sizes ranging from 2.5 to 12 mm (5 mm being widely used). The hole pitch is normally __________ times the hole diameter to give the required hole area.

5 to 10
2.5 to 4.0
0.5 to 1.5
10 to 15

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Process Equipment and Plant Design
Width and depth of grooves in the tube sheet holes normally are __________ inch respectively.

1/2 and 8
1/64 and 1/8
1/2 and 5
1/8 and 1/64

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

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

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