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Process Equipment and Plant Design

Process Equipment and Plant Design
A/an __________ is used for changing the direction of a pipeline.

Disc compensator
Union
Elbow
Flange

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Process Equipment and Plant Design
Optimum economic pipe diameter for fluid flow is determined by the

Total cost considerations (pumping cost plus fixed cost of the pipe)
None of these
Viscosity of the fluid
Density of the fluid

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Process Equipment and Plant Design
The wall thickness of thin cylindrical shell with hemispherical ends is __________ that of the spherical ends.

Less than
Either B or C; depends on maximum permissible internal pressure
More than
Equal to

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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)

A/P
4 P/A
4 A/P
√A

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Process Equipment and Plant Design
Back-trapping in a distillation column results due to

Low reflux ratio
High gas velocity
Excessive liquid gradient over the tray
Low gas velocity

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Process Equipment and Plant Design
In a shell and tube heat exchanger, the 'tube pitch' is defined as the

Shortest distance between two adj acent tube holes
None of these
Shortest centre to centre distance between adjacent tubes
O.D. of the tube for square pitch

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