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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
What name is given to the heat energy obtained from hot rocks inside the earth?
Geothermal energy is produced by the:
(a) fission of radioactive materials
(b) burning of coal inside the coal mines
(c) combustion of natural gas deep inside the earth
(d) fusion of radioactive substances
Name the type of energy (kinetic or potential) possessed by the following:
A stone at rest on the top of a building.
State two characteristic which a source of energy must have.
Select the renewable and non-renewable sources of energy from the following:
Wood
What is tidal? Explain in brief.
Give two examples each of renewable and non-renewable sources of energy?
A body of mass m falls from a height h1 to a height h2, above the ground (h1 > h2). What is the loss of potential energy?
What ts the original source of energy for the electricity produced at a thermal power station?
Use your brain power!
Why do tablets of camphor decrease in size day by day?
