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Process Equipment and Plant Design

Process Equipment and Plant Design
What is the slope of the operating line in the rectifying section of a distillation coloumn?

> 1
∞

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Process Equipment and Plant Design
Pressure differential maintained across a continuous rotary vacuum filter is in the range of __________ mm Hg column.

100 to 150
600 to 700
50 to 100
250 to 500

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Process Equipment and Plant Design
Value of Peclet number = 0, is the representative of

Complete back mixing
Laminar flow
Plug flow
Eddy diffusivity = 0

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Process Equipment and Plant Design
Le/D for a Tee (used as elbow, entering branch) would be

Around 90
More than that for Tee (used as elbow, entering run)
Both B and C
Less than that for Tee (used as elbow, entering run)

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Process Equipment and Plant Design
With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the __________ decreases.

Running cost of cooling water for condenser
Fixed charges initially
Vapour & liquid load both
Running cost of steam for reboiler

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Process Equipment and Plant Design
To keep the power input constant for a stirred vessel operating under fully developed turbulent flow conditions (constant power number), if the impeller diameter is increased by 20%, the impeller speed should be decreased by a factor of

(1.2)3/2
(1.2)3/5
(1.2)2/3
(1.2)5/3

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