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
State whether the object possess kinetic energy, potential energy, or both :
A bird running on the ground ____________.
What kind of energy is possessed by the following?
A running car ____________
Fill in the blank with suitable word :
The ability of a body to do work is called __________. The ability of a body to do work because of its motion is called __________.
A ball of mass 0.5 kg slows down from a speed of 5 m/s so that of 3 m/s. Calculate the change in kinetic energy of the ball. State your answer giving proper units.
Name the device or machine which convert :
Light energy into electrical energy.
Name the device or machine which convert :
Electrical energy into sound energy.
Write the energy transformations which take place in an electric bulb (or electric lamp).
A bulb lights up when connected to a battery. State the energy change which takes place :
A ball falls to the ground as shown below :
Which law you have made use of in answering this question?
A body of mass 10 kg at rest is acted upon simultaneously by two forces 4 N and 3 N at right angles to each other. The kinetic energy of the body at the end of 10 s is
