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Process Equipment and Plant Design

Process Equipment and Plant Design
Poisson's ratio of a material is the ratio of unit lateral strain to the unit axial elongation within its elastic limit. The value of Poisson's ratio for structural and pressure vessel steel may be taken as

0.75
0.95
0.3
0.01

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Process Equipment and Plant Design
Low pressure steam (with saturation temperature between 105 to 120°C) is usually used in the vacuum evaporators, which normally employ a vacuum of about __________ mm Hg (referred to a 760 mm mercury barometer).

650
750
450
250

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Process Equipment and Plant Design
A binary liquid azeotropic mixture has boiling point lower than either of the components, when it shows __________ deviation from Raoult's Law.

None of these
Negative
Positive
No

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Process Equipment and Plant Design
The value of fouling factor depends upon the

All of these
Suspended solids in the fluid
Characteristic of process fluid
Velocity of process fluid containing suspended solids

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Process Equipment and Plant Design
Correct use of 'factor of safety' is very important in equipment design. It is defined as the ratio of the

Ultimate stress to working stress
Ultimate stress to breaking stress
Working stress to ultimate stress
None of these

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Process Equipment and Plant Design
Spherical shaped pressure vessel is considered to be the most ideal, because it can

Withstand higher pressure for a given metallic shell thickness
Be fabricated very easily
Be supported very easily
Be designed without wind load considerations

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