In seive plate column, holes are drilled or punched in sizes ranging from 2.5 to 12 mm (5 mm being widely used). The hole pitch is normally __________ times the hole diameter to give the required hole area.
A. 0.5 to 1.5
B. 2.5 to 4.0
C. 5 to 10
D. 10 to 15
Answer: Option B
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B. $$\frac{1}{{64}}$$ and $$\frac{1}{8}$$
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D. $$\frac{1}{2}$$ and 5
A. Less than
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C. 2.5 times
D. One-fourth of
Value of Peclet number = 0, is the representative of
A. Laminar flow
B. Complete back mixing
C. Plug flow
D. Eddy diffusivity = 0
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