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प्रश्न
What do you know about wind energy?
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उत्तर
The wind is used to produce electricity. When the wind blows, it turns the three large blades of the windmill, which are attached to the turbine. The turbine, which is connected to the generator, converts the energy of the wind into electrical energy.
Wind, like the sun, is nature’s gift to the earth. It is free and widely available.
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संबंधित प्रश्न
Compare and contrast fossil fuels and the Sun as direct sources of energy
State any four characteristics of a good source of energy.
What is meant by a non-renewable source of energy? Give two examples of non-renewable source of energy.
Coal is said to be formed from the wood of trees. Why then is coal considered to be a non-renewable source of energy whereas wood is a renewable source of energy?
A good fuel is one which possesses:
(a) high calorific value and low ignition temperature
(b) high calorific value and high ignition temperature
(c) high calorific value and moderate ignition temperature
(d) low calorific value and moderate ignition temperature
State two important uses of natural gas
Which of the following is not produced by the burning of fossil fuels?
(a) nitrogen oxides
(b) sulphur oxides
(c) sodium oxides
(d) carbon oxides
Which of the following is not a fossil source of energy?
(a) kerosene oil
(b) cow-dung cakes
(c) CNG
(d) coal
Compare and contrast biomass and hydroelectricity as sources of energy.
The source of energy of the sun is:
(a) conversion of hydrogen gas into helium
(b) conversion of carbon fuel into carbon dioxide
(c) burning of hydrogen gas present in the sun
(d) disintegration of uranium into barium and krypton
Fill in the blank
Solar cells use the power supplied by the ______.
Fill in the blank
_______is the coal with the highest percentage of coal.
What are renewable energy resources?
What is the main difference between renewable and non-renewable energy resources?
Can you tell?
Which forms of energy from the sun are used in solar energy devices?
The major problem in harnessing nuclear energy is how to ______.
Choose the odd one:
Which among the following is the non-renewable resources?
Coal is one of the ______ used to cook food.
Write True/False against the following statement.
Resources which are present in unlimited quantity in nature are called exhaustible natural resources.
