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Process Equipment and Plant Design

Process Equipment and Plant Design
Reflux ratio variation in a distillation column is between

None of these
Zero and infinity
Minimum and infinity
Zero and one

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Process Equipment and Plant Design
Brass valves are usually made for pipe sizes __________ inches.

?1
?2
>3.5
>2.5

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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.

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

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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

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

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Process Equipment and Plant Design
The units of Young's modulus of elasticity and __________ are the same.

None of these
Modular ratio
Strain
Stress

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Process Equipment and Plant Design
In a thin cylindrical shell, the hoop stress is __________ stress.

Radial
Longitudinal
Compressive
Circumferential tensile

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