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Process Equipment and Plant Design

Process Equipment and Plant Design
Factor of safety (i.e., overdesign factor) in heat transfer equipments is about __________ percent more than the actual/theoretical design factor.

43961
15-20
35-40
30-35

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Process Equipment and Plant Design
Heat transfer co-efficient for a horizontal condenser as compared to a vertical condenser operating under similar conditions is

Less
About 0.33 times
About 3 times
Same

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

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

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Process Equipment and Plant Design
Which of the following efficiencies can be greater than 100%?

Point efficiency
Overall plate efficiency
Murphree plate efficiency
None of these

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

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

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Process Equipment and Plant Design
In perforated plate towers, the

Total hole area may be around 6 to 15% of tower cross-sectional area
Hole sizes may be around 1/8" or 3/16"
Pressure drop is less compared is similar bubble cap towers
All of these

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