Advertisements
Advertisements
प्रश्न
Explain the principle of generating electricity from hydro energy.
Advertisements
उत्तर
Principle of a hydroelectric power plant is that the water flowing in high altitude rivers is collected in a high dam (or reservoir). The water from dam is then allowed to fall on a water turbine which is located near the bottom of the dam. The shaft of the turbine is connected to the armature of an electric generator or dynamo.
संबंधित प्रश्न
State the energy change in the following device while in use:
A glowing electric bulb.
What name is given to the heat energy obtained from hot rocks inside the earth?
Fill in the blank
Energy possessed by a compressed spring is ______ energy.
Name the type of energy (kinetic or potential) possessed by the following:
Water flowing in a river.
State different forms of potential energy and give one example of each.
Name the form of energy which a body may possess even when it is not in motion. Give an example to support your answer.
Select the renewable and non-renewable sources of energy from the following:
Wind
A moving body weighing 400 N possesses 500 J of kinetic energy. Calculate the velocity with which the body is moving. (g = 10 ms2)
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
|
Use your brain power!
How do we save fuel by using public transport?
