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Process Equipment and Plant Design

Process Equipment and Plant Design
In a cylinderical vessel subjected to internal pressure, the longitudinal stress σL and the circumferential stress, σh are related by

σh = σL/2
σh = σL
No relation exists
σh = 2 σL

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Process Equipment and Plant Design
The LMTD correction factor (FT) is applied in __________ heat exchangers.

Double pipe
1-1 cocurrent
All multipass
All of these

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Process Equipment and Plant Design
For a 25 mm hole drilled in plates to be rivetted, the shank diameter of the rivet should be __________ mm.

23
27
26
25

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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
√A
4 P/A

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Process Equipment and Plant Design
Compensation against openings in process vessels for giving inlet and outlet connections, for providing sight glasses and manholes etc. is provided for strength and rigidity. The most efficient type of compensation is of __________ type.

Nozzle or rim
Fluid in
Ring plate
Flared out

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Process Equipment and Plant Design
Minimum baffle spacing recommended in a shell and tube heat exchanger is equal to

I.D. of the shell
5 cms
25 cms
40% of the I.D. of the shell

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