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प्रश्न
State two disadvantages of using wind energy for generating electricity.
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उत्तर
Disadvantages of using wind energy:
1. The establishment of a wind farm is expensive.
A large area of land is needed for the establishment of a wind farm.
संबंधित प्रश्न
Name the type of energy (kinetic or potential) possessed by the following:
A moving bus.
Name the type of energy (kinetic energy K or potential energy U) possessed in the following case:
A piece of stone placed on the roof.
What kind of energy is possessed in a situation when?
A cocked up spring of air gun.
What kind of energy is possessed in a situation when?
An electron spinning around the nucleus.
What is dissipation of energy?
State the energy changes which take place when:
A body thrown vertically upwards from the ground.
State the energy changes which take place when:
In a heat engine.
A boy sits and stands repeatedly. Draw a graph showing the variation of potential energy with time.
Two bodies, A and B of equal mass are kept at heights 20 m and 30 m respectively. Calculate the ratio of their potential energies.
What is meant by energy?
