A one-fifth scale model of a water turbine is tested in a laboratory…

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Question

A one-fifth scale model of a water turbine is tested in a laboratory at $T = 20^{\circ}\text{C}$. The diameter of the model is 8.0 cm, its volume flow rate is $25.5\text{ m}^3/\text{h}$, it spins at 1500 rpm, and it operates with a net head of 15.0 m. At its best efficiency point, it delivers 720 W of shaft power. Calculate the efficiency of the model turbine. What is the most likely kind of turbine being tested?

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