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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
43929
17-34
52-68

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Process Equipment and Plant Design
Two iron pipes of the same nominal diameter but different schedule numbers will have the same

Wall thickness
None of these
Inside diameter
Outside diameter

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Process Equipment and Plant Design
A cylindrical storage tank can have a self supported conical roof,

Irrespective of its diameter
If its diameter is more than 50 meters
If its diameter is less than 15-20metres
If the thickness of the roof is more than that of the cylindrical shell

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Process Equipment and Plant Design
Where does the maximum tensile strength occur in a thick cylindrical vessel subjected to internal pressure?

At the outer surface
None of these
At the inner surface
At the mid thickness of the cylindrical wall

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Process Equipment and Plant Design
In a double pipe concentric heat exchanger, the equivalent diameter of annulus for heat transfer would be (where, D₁ and D₂ are I.D. of inner and outer pipes)

(D₂² - D₁²)/D₂²
(D₂² - D₁²)/D₁²
D₂ - D₁
None of these

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Process Equipment and Plant Design
With increase in pressure drop (for a given particle size), the dust collection efficiency of a cyclone separator will

Remain unaffected
Increase or decrease depending on the nature of the dust
Increase
Decrease

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