Question

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: (b).2.5 to 4.0

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Q. 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...

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