Question: A Kaplan turbine is designed to develop 8,000 (mathrm{kW}) shaft power. The head available is (12 mathrm{~m}). Assuming speed ratio as 2.1, flow ratio as

A Kaplan turbine is designed to develop 8,000 $\mathrm{kW}$ shaft power. The head available is $12 \mathrm{~m}$. Assuming speed ratio as 2.1, flow ratio as 0.6, overall efficiency as $80 \%$, and diameter of the boss as one-third of the diameter of runner. Find the diameter of runner and its speed.

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