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Process Equipment and Plant Design

Process Equipment and Plant Design
Liquid redistribution should be done in a packed tower packed with raschig rings every 6 metres or __________ times the column diameter, whichever is lower.

15-20
5-7.5
10-12.5
2.5-3.0

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Process Equipment and Plant Design
Cylinderical shell thickness of rotary drier is generally __________ mm.

43990
44180
18-22
43864

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Process Equipment and Plant Design
Smaller sized packings are generally dumped to the packed columns, and the large ones of size greater than __________ mm are stacked individually, which provides better control over bed porosity and offers lower gas pressure drop.

25
150
75
50

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Process Equipment and Plant Design
The equivalent diameter for fluid flow through a channel of constant non-circular cross section of area 'A' is given by (where, P = perimeter of the channel in contact with the fluid)

4 A/P
A/P
4 P/A
√A

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

Bulk modulus
Modulus of rigidity
Shear modulus
Modulus of elasticity

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Process Equipment and Plant Design
Which of the following is used to set the diameter of the distillation column?

Static submergence
Length of straight rectangular weir on cross-flow tray
Allowable vapour velocity
Number of theorectical plates

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