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Process Equipment and Plant Design

Process Equipment and Plant Design
Commercial packed scrubbers are normally designed for a pressure drop range of __________ mm water coloumn per metre of packed height.

88-105
17-34
43929
52-68

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Process Equipment and Plant Design
For a cylinderical internally pressurised vessel, which of the following closure types would withstand highest pressure, if each closure is of the same material and thickness?

Conical
Flat plate
Ellipsoidal (2 : 1)
Hemispherical

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Process Equipment and Plant Design
With increase in the number of shell passes, the value of FT

Decreases
Increases
Remains same, only if the number of tube passes does not change
Remains same

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Process Equipment and Plant Design
The circumferential (hoop) stress in a thin walled cylinderical vessel under internal pressure is

pd/t
pd/4t
pd/2t
pd/3t

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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
Five
Twenty
Two

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Process Equipment and Plant Design
Speed of industrial paddle agitator ranges from __________ rpm.

500 to 750
1000 to 2000
20 to 100
1 to 5

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