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Process Equipment and Plant Design

Process Equipment and Plant Design
Nominal size of a pipe is an indication of its __________ diameter.

Approximate
None of these
Inner
Outer

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Process Equipment and Plant Design
For high pressure process equipments/vessels, the connected nozzle should be

Brazed
Flanged
Welded
Screwed

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Process Equipment and Plant Design
Steam economy is defined as the amount of evaporation per unit amount of steam used, while the capacity is the total evaporation obtained per hour. Use of multiple effect in evaporation

Both B & C
Does not affect the capacity
Increases capacity
Increases economy

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Process Equipment and Plant Design
Heat transfer co-efficient, hG(Kcal/hr.m² .°C) and mass velocity of air, G (kg/hr.m² ) for air flow parallel to the surface in case of constant drying rate in batch drying is related as hG = 0.0176G0.8. But when the flow of air perpendicular to the surface is encountered, this equation changes to

HG = 0.0176G0.37
HG = 1.004G0.37
1.004G0.8
0.0176G1.37

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Process Equipment and Plant Design
For turbine agitator, the impeller diameter is about

0.1 to 0.2 d
0.3 to 0.5 d
0.95 d
0.65 to 0.85 d

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Process Equipment and Plant Design
Circumferential (hoop) stress in a thin cylindrical vessel under internal pressure is __________ the longitudinal stress.

Half
Eight times
Equal to
Twice

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