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Process Equipment and Plant Design

Process Equipment and Plant Design
Pressure drop per tray in the atmospheric distillation column is about __________ psi.

0.5 - 1.0
0.07 - 0.12
0.01 - 0.5
43833

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Process Equipment and Plant Design
The length of straight rectangular weir used on cross-flow trays is generally __________ the column diameter.

0.6-0.8 times
Twice
2 ft irrespective of (for column > 3 ft diameter)
Equal to

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Process Equipment and Plant Design
In a rotary drier, the average retention time of solid is(where Z = length of the drier, metres ρ = apparent solid density, kg/m³ L = flow rate of dry solids, kg/see. m² drier cross-section H = hold up of solid.)

H.ρ/L
Z.H.ρ/L
L/Z.H.ρ
Z.H/L.ρ

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Process Equipment and Plant Design
Of the pressure vessels, with same thickness but different diameters, which one withstands higher pressure?

Smaller dia vessel
Strength of the vessel is same irrespective of the diameter
Larger dia vessel
Larger dia long vessel

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Process Equipment and Plant Design
A pressure vessel is said to be made of 'thick' shell, if the ratio of its diameter to wall thickness is

20
10
20
10

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Process Equipment and Plant Design
The ratio of shear stress to shear strain is called

Modulus of elasticity
Shear modulus
Modulus of rigidity
Bulk modulus

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