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Process Equipment and Plant Design

Process Equipment and Plant Design
Baffles may be eliminated for

Low viscosity liquids (< 200 poise)
None of these
Large diameter tanks
High viscosity liquids (> 600 poise)

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Process Equipment and Plant Design
In a multiple effect evaporator system having 'n' effects, the amount of water evaporated per unit surface area in approximately equal to __________ times that in a single effect.

(1/n)th
0.5 nth
1.5 nth
nth

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Process Equipment and Plant Design
Baffle spacing is generally __________ the I.D. of the shell.

More than
Both B and C
Not greater than
Not less than one fifth of

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Process Equipment and Plant Design
Accidents in chemical plants are mostly due to

Improper layout of the equipments
Faulty operating procedures
Failure of equipments
Inadequate equipment design

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Process Equipment and Plant Design
Le/D for 90° elbow (medium radius) and 90°square elbow would be respectively around

250 and 600
3 and 5
25 and 60
100 and 250

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Process Equipment and Plant Design
For a cylinderical vessel of moderate height, the weld joint efficiency for joints parallel to the cylinderical axis is given as 1.0, while for joints along the girth (circumference) it is given as 0.8. In calculating the shell wall thickness using code formula for an internally pressurised cylinderical vessel, what value of weld joint efficiency should be used?

0.8
(0.8)0.5
0.9
1

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