Power plant generator and turbine
This graphic shows a cutaway of a typical hydropower plant. Water enters into the powerhouse through intake gates, as it is directed through the scroll case into the wicket gates, the Kaplan turbine spins. As the turbine spins, the shaft, which is connected to the rotor spins the rotor creating a magnetic field which creates electrical energy.

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Tags: Gavins point
Photo by: Courtesy |  VIRIN: 140303-A-CE999-001.JPG