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Process Equipment and Plant Design

Process Equipment and Plant Design
The retention time of material in a rotary dryer depends upon its

Slope & length
Flights arrangement
All of these
Rpm

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Process Equipment and Plant Design
Theoretically calculated diameter of the stripping section of the continuous rectification column is __________ that of the enriching section.

More than
Less than
Either more or less (depending upon relative volatility)
Same as

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Process Equipment and Plant Design
25 per cent cut segmental baffle means that the baffle

Spacing is 75% of its height
Height is 25% of the I.D. of the shell
Width is 25% of its height
Height is 75% of the I.D. of the shell

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Process Equipment and Plant Design
In a cylinderical vessel subjected to internal pressure, the longitudinal stress σL and the circumferential stress, σh are related by

σh = σL/2
No relation exists
σh = 2 σL
σh = σL

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Process Equipment and Plant Design
Commercial packed scrubbers are normally designed for a pressure drop range of __________ mm water coloumn per metre of packed height.

52-68
88-105
17-34
43929

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

Radial
Both A & B
Neither A nor B
Circumferential

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