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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
Which of the following packing materials provides for maximum mass transfer?

All of these
Cross-partition rings
Lessig rings
Raschig rings

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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.

Two
Five
Twenty
Ten

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Process Equipment and Plant Design
Liquid/petroleum fuel storage tanks are built underground (as in case of petrol pumps), when the storage capacity is less than __________ kilolitres.

30
20
85
45

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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).

450
650
250
750

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Process Equipment and Plant Design
The circumferential (hoop) stress in a thin walled cylinderical vessel under internal pressure is

pd/3t
pd/4t
pd/t
pd/2t

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