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Process Equipment and Plant Design

Process Equipment and Plant Design
Maximum allowable vapour velocity in a bubble cap tower is determined by the

Vapour density
Diameter of the column
Entrainment considerations
None of these

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

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

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Process Equipment and Plant Design
For high pressure process equipments/vessels, the connected nozzle should be

Screwed
Flanged
Welded
Brazed

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Process Equipment and Plant Design
If a single tube pass heat exchanger is converted to two passes; for the same flow rate, the pressure drop per unit length in tube side will __________ times.

Increase by 21.6
None of these
Decrease by 22
Increase by 1.8

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Process Equipment and Plant Design
For laminar flow (NRe < 2100) in steel pipe, the optimum inside pipe diameter is given by

Di, opt = 3 Q0.36 . ρ1.86 μ0.08
Di, opt = 3 Q0.36 ρ0.18
Di, opt = 7.6 Q0.36 . ρ0.9
Di, opt = 3.9 Q0.45 . ρ0.23

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Process Equipment and Plant Design
Steam side heat transfer co-efficient for design consideration under ordinary condition can be assumed to be about __________ kcal/hr.m².°C.

15000
1250
7500
2500

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