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Process Equipment and Plant Design

Process Equipment and Plant Design
Pressure differential maintained across a continuous rotary vacuum filter is in the range of __________ mm Hg column.

50 to 100
600 to 700
250 to 500
100 to 150

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Process Equipment and Plant Design
Hoop (circumferential) stress induced in a thin walled 'Horton Sphere' used for the storage of liquid ammonia under pressure is

pD/3t
pD/2t
pD/4t
pD/6t

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Process Equipment and Plant Design
For annular flow of a fluid, the ratio of the equivalent diameter for pressure drop calculation to the equivalent diameter for heat transfer calculation is

D1/(d1 + d2)
(d1 + d2)/d1
(d1 + d2)/d2
D2/(d1 + d2)

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Process Equipment and Plant Design
With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the __________ decreases.

Fixed charges initially
Running cost of steam for reboiler
Running cost of cooling water for condenser
Vapour & liquid load both

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Process Equipment and Plant Design
In a distillation column, minimum clearance to be maintained betweeen the overflow weir and the last row of the bubble caps is __________ cms.

15
20
2.5
7.5

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Process Equipment and Plant Design
In a pressure vessel containing multiple openings of various dimensions at different parts, stress concentration at the edges of the opening is maximum which becomes negligibly small beyond the area covered by __________ times the hole diameter.

Twenty
Two
Five
Ten

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