Question

(a) What is hydroelectricity? Explain the basic principle of generation of hydroelectricity with the help of a labelled diagram.
(b) State two advantages of producing hydroelectricity.
(c) State two disadvantages of producing hydroelectricity.

Answer 1

Explanation:

Principle of generation of hydroelectricity: ... When this water falls on the big water wheels called turbines at a hydroelectric power plant, potential energy of water is converted into kinetic energy of water wheels which start rotating. These in turn rotate the armature of the generator and produce electricity

Answer 2

Explanation:

Generation of electricity using water stored in dams. Advantages are not polluting and can be generated whenever necessary. And disadvantages are migration of people or rehabilitation, destruction of forest, etc