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Process Equipment and Plant Design

Process Equipment and Plant Design
In the agitators, the power required will be changed with the increase of diameter of agitator (D) as

D⁹
D⁵
D²
D

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Process Equipment and Plant Design
The dust collection efficiency of a cyclone separator

Is inversely proportional to the mass of the dust particle
Decreases with increase in gas flow rate
None of these
Is directly proportional to the radius of the dust particle path

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Process Equipment and Plant Design
Value of Peclet number = 0, is the representative of

Eddy diffusivity = 0
Complete back mixing
Plug flow
Laminar flow

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Process Equipment and Plant Design
Frame thickness in the plate and frame filter press is normally in the range of __________ inches.

1 to 12
0.25 to 8
1 to 5
0.25 to 4

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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
σh = σL
No relation exists
σh = 2 σL

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Process Equipment and Plant Design
Equivalent diameter for heat transfer calculation for a duct of square cross-section having each side as 'd' will be

D
√(2πd)
√(2d)
√d

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