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Process Equipment and Plant Design

Process Equipment and Plant Design
The absorption factor is defined as (where, S₁ = slope of the equilibrium curve, S₂ = slope of the operating line)

S₁.S₂
1/S₁.S₂
S₁/S₂
S₂/S₁

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Process Equipment and Plant Design
Normally, the length to diameter ratio of rotary dryers varies form 4 to 10 and for its economic operation, the number of transfer units (NTU) for such dryers varies from

7.5-10.0
3.5-5.5
1.5-2.5
44119

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Process Equipment and Plant Design
Width and depth of grooves in the tube sheet holes normally are __________ inch respectively.

1/2 and 5
1/64 and 1/8
1/2 and 8
1/8 and 1/64

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Process Equipment and Plant Design
The thermal stress in a metallic bar does not depend upon the

Both A & B
Cross-sectional area
Neither A nor B
Changes in temperature

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Process Equipment and Plant Design
Optimum reflux ratio in a continuous distillation column is determined by the

Maximum permissible vapour velocity
Total cost consideration (fixed cost of the column plus the cooling water & steam cost)
Flooding limit of the column
None of these

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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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