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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
Select the correct alternatives
The energy stored in an electric cell is
State the energy changes in the following case while in use:
an electric bulb
What is tidal? Explain in brief.
Name two examples in which the mechanical energy of a system remains constant.
What do you understand by the potential energy of the body?
State the energy changes which take place when:
In a heat engine.
State the energy changes which take place when:
A bulb glows, when torchlight is switched on.
State the energy changes which take place when:
A car moves up a hill.
What is the form of that graph between
(i) K.E. and velocity for a constant mass?
(ii) K.E. and mass for a constant velocity?
Use your brain power!
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