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Process Equipment and Plant Design

Process Equipment and Plant Design
Normally, the length to diameter ratio of rotary dryers varies form 4 to 10 and for its economic operation, the number of transfer units (NTU) for such dryers varies from

3.5-5.5
1.5-2.5
44119
7.5-10.0

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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

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

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Process Equipment and Plant Design
A pressure vessel is said to be made of 'thick' shell, if the ratio of its diameter to wall thickness is

10
10
20
20

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Process Equipment and Plant Design
The minimum shell thickness for tank ≤ 15 metres diameter is limited to __________ mm, for reasons of elastic stability.

2
10
5
15

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Process Equipment and Plant Design
Width and depth of grooves in the tube sheet holes normally are __________ inch respectively.

1/64 and 1/8
1/2 and 8
1/2 and 5
1/8 and 1/64

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Process Equipment and Plant Design
A binary liquid azeotropic mixture has boiling point lower than either of the components, when it shows __________ deviation from Raoult's Law.

Negative
None of these
No
Positive

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