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प्रश्न
State the energy changes which take place when:
Water stored in dams rotates turbine connected to a dynamo.
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उत्तर
The potential energy of stored water changes to kinetic energy of flowing water, The kinetic energy of the flowing water rotates turbine. The turbine, in turn, rotates the coil of the generator and changes into electric energy.
संबंधित प्रश्न
Explain how, geothermal energy is used to generate electricity.
Select the renewable and non-renewable sources of energy from the following:
Coal
Name the energy changes for the following:
bicycle brakes
Write five forms of energy.
What kind of energy is possessed in a situation when?
A cocked up spring of air gun.
Give one example when:
Sound energy changes to electric energy.
A girl of mass 35 kg climbs up from the first floor of a building at a height 4 m above the ground to the third floor at a height 12 m above the ground. What will be the increase in her gravitational potential energy? [g = 10 ms-2]
The solar cooker is an application of the ______ energy of the sun, while solar cells, solar lamps are applications of the ______ energy of the sun.
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?
Describe one natural chain of transformation of energy.
