# Actual Discharge

**Problem**

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 |

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