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Process Equipment and Plant Design

Process Equipment and Plant Design
Holes of a sieve tray are arranged in triangular pitch of __________ times the hole diameter.

10 to 15
5 to 10
2.5 to 5
1.5 to 2

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Process Equipment and Plant Design
What is the minimum recommended ligament for square pitch arrangement in case of heat exchangers?

6.5 mm
Equal to tube I.D
6.5 cms
Equal to tube O.D

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Process Equipment and Plant Design
Equivalent diameter for heat transfer calculation for a duct of square cross-section having each side as 'd' will be

√(2d)
√(2πd)
√d
D

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Process Equipment and Plant Design
A pipe is generally made of circular cross-section, because a circular cross-section has the

Higher structural strength
Lowest surface area requirement for a given volume
None of these
Both A & B

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Process Equipment and Plant Design
Which of the following efficiencies can be greater than 100%?

None of these
Overall plate efficiency
Point efficiency
Murphree plate efficiency

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Process Equipment and Plant Design
Vertical vessels are not supported by

Saddles
Columns
Skirts
Brackets

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