Process Equipment and Plant Design
The dust collection efficiency of a cyclone separator

Decreases with increase in gas flow rate
Is inversely proportional to the mass of the dust particle
Is directly proportional to the radius of the dust particle path
None of these

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Process Equipment and Plant Design
Number of evaporators which can be used in service in a multiple effect evaporation system is limited by the

Practical limit reached, due to low heat transfer rate because of inadequate temperature difference
Both A & B
Economic limit reached, when the plant cost exceeds the saving of steam
Neither A nor B

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Process Equipment and Plant Design
A certain pressure vessel manufacturer avoids doing reinforcements calculations for openings by always providing a reinforcing pad extending upto double the diameter of the opening and of the same material and thickness as that of the shell wall. If area compensation is accepted as a code guideline, his approach leads to safe design

Only if the opening is on a horizontal cylinderical vessel
Irrespective of the shape of the vessel
Only if the opening is on spherical vessel
Only if the opening is on a vertical cylinderical vessel

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