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Process Equipment and Plant Design

Process Equipment and Plant Design
Excessive liquid gradient on a tray may result in the

Gas blowing beneath cap skit
Maldistribution of gas
All of these
Back trapping

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Process Equipment and Plant Design
For pipe flows, head is proportional to __________ at constant capacity (where D = pipe diameter ).

1/D
1/D⁵
D²
1/D²

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Process Equipment and Plant Design
The length of straight rectangular weir used on cross-flow trays is generally __________ the column diameter.

Twice
Equal to
0.6-0.8 times
2 ft irrespective of (for column > 3 ft diameter)

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Process Equipment and Plant Design
The normal range of velocity of water in pipes is __________ m/sec.

10-50
0.1-0.5
1-2
15-30

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Process Equipment and Plant Design
In a shell and tube heat exchanger, tube side __________ of the mass velocity.

Heat transfer co-efficient is proportional to 0.8th power
Both A & B
Neither A nor B
Pressure drop is proportional to the square

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Process Equipment and Plant Design
Nominal size of a pipe is an indication of its __________ diameter.

None of these
Outer
Inner
Approximate

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