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Process Equipment and Plant Design

Process Equipment and Plant Design
Lug support is meant for supporting __________ vessels.

Thick walled tall
Small
Large horizontal cylindrical
Tall but empty

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Process Equipment and Plant Design
Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about __________ percent.

55
5
35
20

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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
25-50
200-250
750-1000

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Process Equipment and Plant Design
Le/D for fully open globe value may be around

25
75
10
300

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Process Equipment and Plant Design
The clearance between two tubes in a shell and tube heat exchanger is known as 'ligament', whose minimum value is __________ the outside diameter of the tube, but in no case it should be less than 4.5 mm.

Three fourth
Half
Equal to
One fourth

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Process Equipment and Plant Design
The wall thickness of thin cylindrical shell with hemispherical ends is __________ that of the spherical ends.

Either B or C; depends on maximum permissible internal pressure
Less than
Equal to
More than

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