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Process Equipment and Plant Design

Process Equipment and Plant Design
In most of the shell and tube heat exchangers, the tube pitch is generally __________ the tube diameter.

One-fourth of
Less than
1.25-1.50 times
2.5 times

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Process Equipment and Plant Design
The safe distance of habitation from a hazardous chemical plant (TLV of its product < 1000 ppm) should be about __________ kms.

1
15
25
5

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Process Equipment and Plant Design
In a thin cylindrical shell, the hoop stress is __________ stress.

Radial
Compressive
Longitudinal
Circumferential tensile

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Process Equipment and Plant Design
Wind load consideration in the design of a support can be neglected, when the vessel is

None of these
Short (< 2 m) and housed indoor
Tall (say 30 metres), but is full of liquid
Tall but empty

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Process Equipment and Plant Design
Which of the following material is seldom used for pressure vessel construction?

Killed steel
Rimmed still
Mild steel
Semi-killed steel

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Process Equipment and Plant Design
A perforated plate has holes of diameter dh arranged in a pitch ph. Each hole has a tube of I.D. dt passing through it. The ligament efficiency is given by

(ph - dh . dt/2)/ph
(ph - dh)/ph
(ph - dh)/dh
(ph - dt)/ph

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