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प्रश्न
Explain the principle of working of the windmill for generating electricity.
उत्तर
It works on the principle of conversion of the kinetic energy of blowing wind into electrical energy. When the blowing wind strikes across the blades of a windmill it exerts a force that rotates its blade. The turning of the blades would simultaneously cause the shaft to turn, which is connected to a generator. This makes the generator produce electricity.
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संबंधित प्रश्न
State the changes in form of energy while producing hydro electricity.
State two advantages of using wind energy for generating electricity.
Explain the principle of generating electricity from hydro energy.
Identify the type of energy possessed by the body in each of the following:
(a) A coiled spring of the toy car
(b) A hammer which is raised
(c) A stone shot from a catapult
(d) Water stored in the overhead tank
(e) A tadpole moving in water.
State the energy changes which take place when:
A toy car spring is wound and car is made to run on level floor.
Give one example when:
Mechanical energy to heat energy.
Match the pairs.
| Group 'A' | Group 'B' | ||
| (1) | Rolling object | (a) | Heat energy |
| (2) | Food | (b) | Atomic energy |
| (3) | Stretched bow | (c) | Kinetic energy |
| (4) | Sunlight | (d) | Potential energy |
| (5) | Uranium |
(e)
|
Chemical energy
|
Can you tell?
What are the various forms of energy?
What is meant by energy?
