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A perforated plate has holes of diameter dn arranged in a pitch ph. Each hole has a tube of I.D. dt passing through it. The ligament efficiency is given by | |
A. | (ph - dh)/ph [Wrong Answer] |
B. | (ph - dh . dt/2)/ph [Wrong Answer] |
C. | (ph - dt)/ph [Correct Answer] |
D. | (ph - dh)/dh [Wrong Answer] |