How does a hydroelectric dam generate electricity?

Answer 1

A hydro dam works by taking the energy of water flow and converting it into an electric voltage. The water is regulated through a series of water turbines. The water flows through the turbine, pushing the turbine blades causing a rotation to a shaft. The shaft is then attached to an electrical generator. Inside the electrical generator, magnets are rotated around wire coil inductors which cause a voltage.

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The word 'hydro' means water. When water is stored in a reservoir by construction dam, the stored water will have gravitational potential energy. When water is allowed to flow down this PE is changed into kinetic energy. This KE will make the wheels of a turbine to rotate. This mechanical energy ie rotational energy is changed into electrical energy with the help of magnetic field. This phenomenon is known as electromagnetic induction, first found by Michael Faraday. This is how hydro power is changed into electrical power.

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The energy in moving (falling) water, is supplied by gravity, and the moving water has kinetic energy. This mechanical energy is applied to turbine blades, and the turbines turn electric generators to generate electricity.

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Hydro power is generated by using kinetic energy from flowing water to turn turbines in generators.

Turbine is moved with flow of water and this is coupled with generator to produce electricity

Answer 2

Basically, water behind the dam is fed down tubes called penstocks. As the water falls it spins a turbine, a kind of fan. The turbine turns a generator which generates electricity. Hydro- means water, so hydroelectric is electricity generated by water! See the links for a picture diagram that helps to visualize it.
Dam do not generate electricity

1. Dams store water

2. Under Dams PENSTOCKS are arranged

3.by penstocks water is release by a nozzle to turbines

4.Then turbines rotates and it connected to generators

5. Generators rotate and generate electricity

A:Water passes through a turbine that makes it spin, and this energy is converted to electricity.
Dams generate electricity by causing water to flow through devices called a turbine generators.

You can think of the turbine as a water wheel. The water flows over the water wheel making it turn. The water wheel is connected to a large coil of wire which turns in a magnetic field. When wire moves in a magnetic field it generates electricity.
The dam itself can not but by using hydroelectricity it can.There are propellors inside the dam which are turned by flowing water and the faster the water flows the more energy they produce

Answer 3

Electricity is generated when dams force running water past a turbine.