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Process Equipment and Plant Design

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
Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency

Increases
Decreases
Remains same
May increase or decrease depending upon the plate spacing

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

1/S₁.S₂
S₂/S₁
S₁.S₂
S₁/S₂

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Process Equipment and Plant Design
Flanges are connected to pipes by

Screwing
All of these
Welding
Brazing

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Process Equipment and Plant Design
For identical situation, condensing film coefficient in case of a horizontal condenser is almost __________ the value expected in case of vertical condenser.

Thrice
Twice
Half
Five times

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Process Equipment and Plant Design
Power required for agitation depends upon the

Height & properties of the liquid
Size of agitator & the tank
All of these
Agitator type & speed of agitation

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