What is the significance of building a dam in hydro power plants?

dams convert potential energy of water to kinetic energy

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dams convert kinetic energy of flowing water to potential energy

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dams are used to store rain water

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none of these

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Solution

The correct option is B
dams convert kinetic energy of flowing water to potential energy

Water of a flowing river or canal is stored in dams and it has higher potential energy. This potential energy is converted to kinetic energy by making them fall from a height. The water runs over to the turbines of the generators and thus produces electricity.

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Similar questions

Statement 1: Dams are constructed to produce hydro electricity.

Statement 2: Dams obstruct the flow of water and water level rises, thereby increasing the potential energy which is further converted to kinetic energy, and then to electrical energy.

Statement 1: Dams are constructed to produce hydel electricity.

Statement 2: Dam obstructs the flow of water and water level rises thereby increasing the potential energy which is further converted to kinetic and then to electric energy.

Q. In a hydro power plant, the water stored in the dam, before reaching the turbine is converted to which of the following energy?

Q. At a hydro power plant:

(a) kinetic energy possessed by stored water is converted into electrical energy
(b) electricity is extracted from water
(c) water is converted into steam to turn turbines and produce electricity.
(d) potential energy possessed by stored water is converted into electricity.

State whether the given statement is True or False.

As the water stored in the dam flows out, its kinetic energy changes to potential energy.

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