The diagram illustrates the process by which electricity is gene
rated in a hydroelectric dam and transmitted over long distances.
Overall, the hydroelectric dam works by transforming the potential energy of stored water into mechanical energy and then into electrical energy for distribution.
Initially, water from a reservoir is first directed through an intake gate located at the dam’s lower section. From there, it travels towards a large enclosed passage known as a penstock. The movement of water through the penstock drives a turbine located in the powerhouse. The kinetic energy of the moving water causes the turbine to spin, which in turn powers a generator.
The generator converts the mechanical energy of the turbine into electrical energy. This electricity is then transmitted via long-distance power lines to supply various regions. After passing through the turbine, the water is released into the river, allowing it to continue its natural flow.