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प्रश्न
Explain the principle of generating electricity from hydro energy.
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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.
Give one relevant example for the following transformation of energy :
Electrical energy to light energy.
State different forms of potential energy and give one example of each.
Name five renewable sources of energy.
How much electric power is generated in India using the wing energy?
Name a device in which solar energy is converted into electricity state its two uses.
State two advantages and two disadvantages of using hydro-energy for producing electricity.
State the energy changes which take place when:
A stone projected vertically upwards, returns back to the thrower.
A boy sits and stands repeatedly. Draw a graph showing the variation of potential energy with time.
