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.
Options
A. 0.5 to 1.5
B. 2.5 to 4.0
C. 5 to 10
D. 10 to 15
Correct Answer
2.5 to 4.0
More questions
1. Wall thickness of schedule 40 pipe as compared to that of schedule 80 pipe is
Options
A. more
B. less
C. same
D. cither (a) or (b); depends upon the I.D. of the pipe