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Process Equipment and Plant Design

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
750-1000
200-250
25-50

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Process Equipment and Plant Design
Length to diameter ratio of most rotary driers is in the range of

20 to 30
10 to 20
4 to 10
1 to 2

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Process Equipment and Plant Design
Hoop (circumferential) stress induced in a thin walled 'Horton Sphere' used for the storage of liquid ammonia under pressure is

pD/2t
pD/6t
pD/3t
pD/4t

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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

Outside diameter
Inside diameter
Wall thickness
None of these

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

80-100
0.1-0.5
10-20
1-5

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Process Equipment and Plant Design
Hazards associated with the relief valve leakage for extremely hazardous material storage can be taken care of by providing

Rupture diaphragm
None of these
Dikes
Surge chamber

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