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Process Equipment and Plant Design

Process Equipment and Plant Design
Slope of countercurrent flow rotary drier is in the range of __________ meter/metre.

0 to 0.8
0 to 2.2
0 to 1.5
0 to 0.08

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Process Equipment and Plant Design
Liquid gradient over the tray results due to the

Large reflux ratio
Low gas velocity
Large plate spacing
Resistance offered to flow of liquids by caps & risers and the flow of gas

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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

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

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Process Equipment and Plant Design
In a pressure vessel containing multiple openings of various dimensions at different parts, stress concentration at the edges of the opening is maximum which becomes negligibly small beyond the area covered by __________ times the hole diameter.

Five
Two
Ten
Twenty

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Process Equipment and Plant Design
Ratio of tube length to shell diameter for a shell and tube heat exchanger is

8 : 1 to 12 : 1 for both liquid-liquid and gas-gas heat exchangers
Both B & C
< 4 : 1 for gas-gas exchangers
4 : 1 to 8 : 1 for liquid-liquid exchanger

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Process Equipment and Plant Design
Angled baffles are preferred in the agitation tank to control the swirling action; if the viscosity of the liquid to be mixed is about 200 poise. However, the baffle may be completely eliminated for mixing liquids having viscoisty above __________ poise.

600
300
1500
1000

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