A water turbine is a device that converts the energy of flowing or falling water into mechanical energy. It is commonly used in hydroelectric power plants to generate electricity. The movement of water turns the blades of the turbine, which then drives a generator to produce electrical power. There are different types of water turbines, including Francis, Pelton, and Kaplan turbines, each designed for specific water flow conditions. These turbines play a crucial role in renewable energy production, helping to harness the power of water while minimizing environmental impact.