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प्रश्न
State two advantages and disadvantages of using wind energy for producing electricity.
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उत्तर
Advantages:
(i) Wind is free and will run not (renewable sources).
(ii) Wind energy does not create greenhouse gases.
Disadvantages:
(i) The wind farms can be established only at places near the coastal areas where the wind blows around the year steadily with a speed not less than 15 Km h-1.
(ii) The establishment of the wind farm is expensive.
संबंधित प्रश्न
Can a body possess energy even when it is not in motion ? Explain your answer with an example.
Name the type of energy (kinetic energy K or potential energy U) possessed in the given cases:
A moving cricket ball
Name the type of energy (kinetic energy K or potential energy U) possessed in the given cases:
A moving bus
What do you understand by the potential energy of the body?
What kind of energy is possessed in a situation when?
A stone lying on the top of roof.
State two advantages and disadvantages of using nuclear energy for producing electricity.
Give one example when:
Potential energy changes to electric energy.
A ball of mass 200 g falls from a height of 5 m. What will be its kinetic energy when it just reaches the ground? (g = 9.8 m s−2)
In a hydroelectric power station, 1000 kg of water is allowed to drop through a height of 100 m in 1 sec. If the conversion of potential energy to electric energy is 60%. Calculate the power output. [Take: g = 10m/sec2]
Name the type of energy (kinetic energy K or potential energy U) possessed in the following case:
A moving bus
