Determine the efficiency of a Kaplan turbine developing 3000 kW under a net head of 5.2 m. It is fitted with a draft tube with its inlet diameter 3 m set placed 1.5 m above the tail race level. A...

Determine the efficiency of a Kaplan turbine developing 3000 kW under a net head of 5.2 m. It is fitted with a draft tube with its inlet diameter 3 m set placed 1.5 m above the tail race level. A vacuum gauge connected to the inlet of draft tube indicates a reading of 5 m of water. Assume the draft tube efficiency as 80%.