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Process Equipment and Plant Design

Process Equipment and Plant Design
The slope of the feed line in distillation opeartion is given by (where, q = fraction of the feed stream that is liquid.)

-q/(q-1)
-q/(1-q)
-q
None of these

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Process Equipment and Plant Design
In most of the shell and tube heat exchangers, the tube pitch is generally __________ the tube diameter.

2.5 times
One-fourth of
1.25-1.50 times
Less than

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Process Equipment and Plant Design
The ratio for the rate of washing to the final rate of filtration in a washing type of plate and frame filter is

0.75
1.25
0.5
0.25

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Process Equipment and Plant Design
25 per cent cut segmental baffle means that the baffle

Width is 25% of its height
Height is 75% of the I.D. of the shell
Height is 25% of the I.D. of the shell
Spacing is 75% of its height

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Process Equipment and Plant Design
Pressure drop due to pipe fittings can be estimated by the equation, ΔP/p = 4f.Le/D.V2/2gc, where, Le = equivalent length of straight pipeline which will incur the same frictional loss as the fitting and D = diameter of the fitting. The value of Le/D (dimensionless) for 45° elbow and 180° close return bends would be respectively around

45 and 75
300 and 500
5 and 10
180 and 300

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Process Equipment and Plant Design
Longitundinal stress induced in a thin walled cylindrical storage vessel is

PD/3t
PD/2t
PD/6t
PD/4t

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