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Process Equipment and Plant Design

Process Equipment and Plant Design
The ratio of down take area to cross-sectional area of the tube, for calendria type evaporator ranges from

1.5 to 2
1 to 1.5
0.5 to 1
2 to 2.5

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Process Equipment and Plant Design
The necessary wall thickness for a metallic storage vessel is a function of the

Ultimate tensile strength (or yield point) of the material and operating temperature
Operating pressure and welding/joint efficiency
All of these
Diameter of the vessel

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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.

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

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Process Equipment and Plant Design
In a shell and tube heat exchanger having triangular pitch, the shell side equivalent diameter is given by

(4p² - πd²/4)/πd
(p² - πd²/4)/πd
4(0.86p² - πd²)/πd
4(0.86p² - πd²/4)/πd

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Process Equipment and Plant Design
In the allocated cap area, bubble caps are generally arranged on equilateral triangular pitch. Number of caps fixed on a plate is with a

Clearance of 25-75 mm
Neither A nor B
Cap pitch of 1.3-2 times the cap diameter
Either A or B

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

10-20
0.1-0.5
1-5
80-100

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