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Process Equipment and Plant Design

Process Equipment and Plant Design
__________ shaped roof is most commonly used for cylindrical tanks.

Flat
Cone
Umbrella
Dome

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Process Equipment and Plant Design
The ratio of volumes of the mixed reactor to the plug flow reactor (for identical feed composition, flow rate, conversion, and for all positive reaction orders) is always

< 1
>1
Equal to the order of reaction
1

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Process Equipment and Plant Design
Tube wall thickness depends on the cor-rosiveness of the fluids and their operating pressure & temperature and is specified by Birmingham wire gauge (B.W.G)-a number which varies from 8 to 18 with the numbers 14 and 16 being more commonly used. Outside diameter of tubes varies from about 15 to 50 mm; however a tube of less than __________ mm outside diameter is generally not recommended for fouling fluids.

28
16
38
19

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

Twice
Half
Eight times
Equal to

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Process Equipment and Plant Design
Joint efficiency (J) for a seamless pipe is

< 0.5
1.2
1
0.85

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Process Equipment and Plant Design
An underdesigned steam trap will

None of these
Destroy itself of acceleration wear due to rapid recycling
Waste steam
Back up condensate and cause water hammer in steam line

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