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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
Name the type of energy (kinetic or potential) possessed by the following:
A stretched rubber band.
Select the renewable and non-renewable sources of energy from the following:
Oil
What kind of energy is possessed in a situation when?
A shooting arrow.
Write the type of energy possessed in the following case:
A wound-up spring
State two advantages and disadvantages of using nuclear energy for producing electricity.
State the energy changes which take place when:
A magnesium ribbon burns in air.
State the energy changes which take place when:
A stone projected vertically upwards, returns back to the thrower.
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?
What is the difference between the solid, liquid, and gaseous states of a substance?
