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Process Equipment and Plant Design

Process Equipment and Plant Design
In case of bubble cap distillation column of diameter greater than 1.2 metres, the cap diameter is roughly about __________ cms.

30
10
20
35

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Process Equipment and Plant Design
In case of plain carbon steel, butt welded joints are used for shell plate thickness ≤ __________ cms. .

3.8
6.8
1.2
0.5

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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.

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

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Process Equipment and Plant Design
For identical operating conditions, the pressure drop over __________ tray is the highest out of the following.

Sieve
Counterflow
Valve
Bubble cap

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Process Equipment and Plant Design
Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency

May increase or decrease depending upon the plate spacing
Remains same
Decreases
Increases

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Process Equipment and Plant Design
The dust collection efficiency of electrostatic precipitator increases with increase in the

Neither A nor B
Both A & B
Gas flow rate
Electrode area

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