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Process Equipment and Plant Design

Process Equipment and Plant Design
Generally, no corrosion allowance in wall thickness of a part is required, if the thickness is more than __________ mm.

20
30
10
5

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Process Equipment and Plant Design
Pressure drop per tray in the atmospheric distillation column is about __________ psi.

43833
0.5 - 1.0
0.01 - 0.5
0.07 - 0.12

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Process Equipment and Plant Design
In a rotary drier, the average retention time of solid is(where Z = length of the drier, metres ρ = apparent solid density, kg/m³ L = flow rate of dry solids, kg/see. m² drier cross-section H = hold up of solid.)

H.ρ/L
Z.H/L.ρ
Z.H.ρ/L
L/Z.H.ρ

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Process Equipment and Plant Design
The raio, (properller agitator dia/tank dia) is normally taken as

0.15-030
0.5-0.65
0.60-0.90
0.75-0.85

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Process Equipment and Plant Design
Which of the following is the best tube material from thermal conductivity point of view alone?

Aluminium
Stainless steel
Carbon steel
Copper

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Process Equipment and Plant Design
What is the value of 'q' for saturated vapor feed to a distillation column ?(where q = fraction of the feed stream that is liquid.)

1
> 1

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