Advertisements
Advertisements
प्रश्न
What do you know about wind energy?
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
What is a source of energy? What are the two main categories of the sources of energy?
What is meant by a renewable source of energy? Give two examples of renewable sources of energy.
Name two sources of energy which you consider to be non-renewable. Give reason for your choice.
An examples of a renewable source of energy is:
(a) petrol
(b) natural gas
(c) biogas
(d) kerosene
A non-renewable source of energy is:
(a) wood
(b) alcohol
(c) hydrogen gas
(d) natural gas
Which of the following fuels has the highest calorific value?
(a) natural gas
(b) methane gas
(c) hydrogen gas
(d) biogas
Write the full forms of CNG and LPG.
Complete the following sentence:
Domestic gas cylinders like Indane contain mainly ..............
Why is LPG considered a better fuel than coal?
Name the original source of wind energy.
State whether the following statement is true or false:
Tidal energy is one of the forms in which solar energy manifests itself in oceans.
The gravitational pull of the moon cause the sea-water to rise periodically.
(a) What name is given to the condition of the sea when water to rise periodically.
(b) What name is given to the condition of the sea when its raised water recedes?
(c) What name is given to the energy which can be harnessed from this natural phenomenon?
(d) Draw labelled diagram to show how this energy can be harnessed from this natural
Which produced of the nuclear fission of uranium-235 is utilised to cause further fission of its nuclei?
Select the renewable and non-renewable sources of energy from the following :
- Coal
- Wood
- Water
- Diesel
- Wind
- Oil
Answer the following question.
Write the name of the main constituent of Biogas. Also, state its percentage.
Fill in the blank
Coal, petroleum, and natural gas are _________fuels.
State whether the following is True or False.
China, the USA, and Spain are major producers of wind energy.
Name a few major producers of petroleum in the world.
Describe the four major types of coal.
Some natural resources are given below. Classify them into the exhaustible and inexhaustible natural resources.
| air, coal, natural gas, sunlight, petroleum, minerals, forests, oxygen |
