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Process Equipment and Plant Design

Process Equipment and Plant Design
The distance between the centre of a rivet hole to the nearest edge of the plate is called

Back pitch
Margin
None of these
Pitch

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Process Equipment and Plant Design
In a shell and tube heat exchanger, the 'tube pitch' is defined as the

None of these
O.D. of the tube for square pitch
Shortest centre to centre distance between adjacent tubes
Shortest distance between two adj acent tube holes

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Process Equipment and Plant Design
In packed towers provided with pall rings liquid redistributors are positioned at heights of every 6 metres or 5-10 times the column diameter, whichever is less. Maximum size of the pall rings should not exceed __________ of the column diameter.

1/10-1/15th
1/2 to 1/4th
1/5-1/10th
1/20-1/30th

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Process Equipment and Plant Design
The difficulty of liquid distribution in packed towers is accentuated, when the ratio of tower diameter to packing diameter is

< 30
> 7 < 15
> 20 < 50
< 7

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Process Equipment and Plant Design
At the following point for a given packing and set of fluids, the pressure drop per metre of packed height, with variation in fluid rates and operating pressure

May increase or decrease depending upon the solubility of the gas in the liquid
Increases
Remains same
Decreases

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Process Equipment and Plant Design
Thin spherical shells subjected to internal pressure, develop __________ stresses.

Radial
Neither A nor B
Circumferential
Both A & B

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