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

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

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Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of a basket type evaporator.

It is used for high viscosity liquor having large rate of scaling
Downtake is formed by the annular space between the bundle and the shell
There is no central downtake
The tube bundle is suspended on bracket

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Process Equipment and Plant Design
Practical dividing line between a ductile and brittle materials is suggested, when the ultimate elongation is about 5%. Generally, larger the knuckle radius, stronger is the corner torus section of a head. The knuckle radius provided should be less than __________ of the head.

6% of I.D.
Either A or B, whichever is larger
3 times the thickness
Either A or B, whichever is smaller

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