Advertisements
Advertisements
Question
What kind of energy transformation take place at a hydroelectric power station?
Advertisements
Solution
At a hydroelectric power station, a dam is built on a river. The water collected in a reservoir has lots of gravitational potential energy. The kinetic energy of the falling water is used to drive huge turbines, which are connected to the electric generator. This energy transformation can be shown as,
Gravitational potential energy > Kinetic energy > Electrical energy
APPEARS IN
RELATED QUESTIONS
What kind of energy is possessed by the following?
Water stored in the reservoir of a dam __________.
Fill in the blank with suitable word:
The electricity meter installed in our homes measure electrical energy in the units of ___________.
What kind of energy transformations take place at a coal-based thermal power station?
How much electrical energy in joules does a 100 watt lamp consume : in 1 minute?
A bulb lights up when connected to a battery. State the energy change which takes place :
How much electric energy in kWh is consumed by an electrical appliance of 1000 watts when it is switched on for 60 minutes?
Name the energy transfers which occur when an electric ball rings.
Which of the following energy change involves frictional force?
An object is falling freely from a height x. After it has fallen a height `pi/2` , it will possess :
A body of mass 10 kg falls from a height of 20 m to 8 m. Calculate:
- the loss in potential energy of the body, and
- the total energy possessed by the body at any instant? (Take g = 10 m s-2)
