Question

How does a hydroelectric power station work?

Answer 1

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Gravity causes it to fall through the penstock inside the dam. At the end of the penstock there is a turbine propeller, which is turned by the moving water. The shaft from the turbine goes up into the generator, which produces the power. ... A hydroelectric generator converts this mechanical energy into electricity.

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Answer 2

The hydroelectric power station works by the electricity producing turbines.

Now we need a substance which will constantly rotate the shaft of the turbine which will produce electricity.

In the hydroelectric power stations,the falling water due to gravitational pull acts as the substance which rotates the shaft of the turbine and produces electricity.

Generally, waterfalls are used for the hydroelectric production due to the constant free falling water.