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(a) What is wind? What type of energy is possessed by wind?
(b) Explain how, wind energy can be used to generate electricity. Illustrate your answer with the help of a labelled diagram.
(c) State two advantages of using wind energy for generating electricity.
(d) Mention two limitations of wind energy for generating electricity.
(a) Wind is the flow of air and is a source of energy. It possesses kinetic energy.
(b) Wind possesses kinetic energy, and when the fast-moving wind strikes the wind turbine it starts rotating, thus the kinetic energy of wind is converted into mechanical energy. Further, the wind turbine is connected to electricity generators through the shaft, due to which it also rotates and drives the generator which produces electricity. Finally, the mechanical energy gets converted into electrical energy.
(c) The two advantages of using wind energy for generating electricity are as follows:
1. It is a clean source of energy as it does not cause any pollution.
2. It is a renewable source of energy.
(d) The two limitations of wind energy for generating electricity are as follows:
1. The production of energy depends on the flow of air as it varies during different times of the day and is seasonal.
2. Its initial capital cost is very high, as it requires a large area of land for its establishment.
Updated on: 10-Oct-2022
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