How we get electricity from water in a dam?

A dam is a huge wall built across a river or a stream to hold back the water and form a reservoir. Electricity can be generated from water in the dam through the process of hydroelectric power generation. The process involves the following steps:

1. Water flow: Water flows downhill from the reservoir to the power plant through a penstock, which is a large pipe. The water flows with a lot of force due to the height of the dam.

2. Turbine: The water enters the turbine, which is a large wheel with many blades. The force of the water turns the blades and makes the turbine spin.

3. Generator: The spinning turbine turns a generator, which is a machine that converts mechanical energy into electrical energy. The generator produces electricity that is then sent to power lines and distributed to homes and businesses.

4. Transformer: The electricity produced by the generator is sent to a transformer, which increases the voltage of the electricity so it can be transmitted over long distances.

5. Transmission: The high-voltage electricity is sent over power lines to homes and businesses where it is then stepped down in voltage by another transformer before being used.

In summary, a dam is a source of hydroelectric power generation. Water from the dam flows downhill through a penstock, turns a turbine, which in turn spins a generator, producing electricity that is sent to power lines and distributed to homes and businesses.