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Process Equipment and Plant Design

Process Equipment and Plant Design
A minimum clearance of about __________ mm is maintained between the distillation column wall and the bubble cap.

38
19
76
95

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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
35-40
15-20
30-35

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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
A single pass air heater is connected to a two pass unit. For the air flow rate and other conditions remaining the same, the film heat transfer co-efficient for air will vary in the ratio of

20.8
None of these
20.2
2

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Process Equipment and Plant Design
Multiple blade paddle agitator is used for mixing high viscosity liquids/paste in which the paddle diameter is commonly 0.8 times the tank diameter. However, the width of the blade is in the range of __________ times the paddle diameter.

0.3 to 0.5
0.65 to 0.80
0.5 to 0.6
0.1 to 0.25

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Process Equipment and Plant Design
Le/D for a Tee (used as elbow, entering branch) would be

More than that for Tee (used as elbow, entering run)
Less than that for Tee (used as elbow, entering run)
Around 90
Both B and C

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