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प्रश्न
What is hydro energy?
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उत्तर
The kinetic energy possessed by the flowing water is called the water or hydro energy.
संबंधित प्रश्न
What is geothermal energy?
What name is given to the heat energy obtained from hot rocks inside the earth?
A ball is made to fall freely from a height. State the kind/ kinds of energy possessed by the ball when it is at the highest point .
Select the renewable and non-renewable sources of energy from the following:
Water
Name two examples in which the mechanical energy of a system remains constant.
A hydroelectric power station takes its water from a lake whose water level is 50 m above the turbine. Assuming an overall efficiency of 40%, calculate the mass of water which must flow through the turbine each second to produce power output of 1 MW. (Take g = 10 m s−2).
What kind of energy is possessed in a situation when?
Water stored in dams.
State the energy changes which take place when:
A body released from rest from the top of a building.
State the energy changes which take place when:
Water stored in dams rotates turbine connected to a dynamo.
In a hydroelectric power station, 1000 kg of water is allowed to drop through a height of 100 m in 1 sec. If the conversion of potential energy to electric energy is 60%. Calculate the power output. [Take: g = 10m/sec2]
