Coefficient of discharge of circular orifice in a wall tank under constant head

Date of Exam

A 1.25 cm diameter orifice, in a vertical wall of a tank under a constant head of 5.5 m discharged 0.45 cubic meter in 9.5 minutes. Find the coefficient of discharge.

A.   0.62 C.   0.58
B.   0.42 D.   0.60


Answer Key