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Process Equipment and Plant Design

Process Equipment and Plant Design
Hoop (circumferential) stress induced in a thin walled 'Horton Sphere' used for the storage of liquid ammonia under pressure is

pD/4t
pD/6t
pD/3t
pD/2t

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Process Equipment and Plant Design
If 'D' is the inside diameter of the shell of a shell and tube heat exchanger, then the baffle spacing is usually in the range of

D/5 or minimum 2" to D
D/2 or minimum 2" to 5D
None of these
D/5 or minimum 2" to 5D

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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
20
10
10

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Process Equipment and Plant Design
The average velocity in the tubes of a 1-4 heat exchanger is __________ times that in 1-1 heat exchanger having the same size & number of tubes and operated at same liquid flow rate.

43832
43834
4
2

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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

√(2πd)
√d
D
√(2d)

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Process Equipment and Plant Design
In case of 1.5" heat exchanger tubes, the inside flow area __________ with decrease in BWG.

None of these
Decreases
Increases
Remains same

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