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Process Equipment and Plant Design

Process Equipment and Plant Design
Vertical storage vessels are never supported by __________ support.

Skirt
Saddle
Lug
Bracket

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Process Equipment and Plant Design
__________ shapedroof is the most commonly used roof for cylinderical storage tanks.

Conical
Flat
Umbrella
Dome

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Process Equipment and Plant Design
Hold up of material in a operating rotary drier is in the range of

0.25 to 0.50
0.8 to 0.9
0.5 to 0.8
0.05 to 0.15

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Process Equipment and Plant Design
Heat transfer co-efficient, hG(Kcal/hr.m² .°C) and mass velocity of air, G (kg/hr.m² ) for air flow parallel to the surface in case of constant drying rate in batch drying is related as hG = 0.0176G0.8. But when the flow of air perpendicular to the surface is encountered, this equation changes to

HG = 1.004G0.37
HG = 0.0176G0.37
0.0176G1.37
1.004G0.8

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Process Equipment and Plant Design
The retention time of material in a rotary dryer depends upon its

Slope & length
Flights arrangement
All of these
Rpm

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Process Equipment and Plant Design
The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about __________ mm of water column per metre height of packing.

20-40
1000-1500
100-150
43835

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