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Process Equipment and Plant Design

Process Equipment and Plant Design
Le/D for fully open globe value may be around

75
10
300
25

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Process Equipment and Plant Design
A 'rupture disc' is provided in chemical equipments as an accessory meant for

Creating turbulence
Avoiding vortex formation
Relieving excess pressure
Enhancing mixing rate

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Process Equipment and Plant Design
Holes of a sieve tray are arranged in triangular pitch of __________ times the hole diameter.

10 to 15
1.5 to 2
2.5 to 5
5 to 10

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Process Equipment and Plant Design
In a distillation column, the minimum residence time for liquid in the downspout is about __________ seconds.

80
8
1
180

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Process Equipment and Plant Design
Hold up of material in a operating rotary drier is in the range of

0.25 to 0.50
0.05 to 0.15
0.8 to 0.9
0.5 to 0.8

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Process Equipment and Plant Design
At equal mass velocities, the values of film co-efficients for gases as compared to that for liquids are generally.

Higher
Unpredictable
Same
Lower

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