Advertisements
Advertisements
प्रश्न
What kind of energy transformations take place at a coal-based thermal power station?
Advertisements
उत्तर
At a thermal power station, the chemical energy of coal is converted into heat energy, which is further converted into kinetic energy of fast moving steam which drives huge turbines. The turbines connected to the electric generator generates electrical energy. The energy transformation can be shown as,
Chemical energy > Heat energy > Kinetic energy > Electrical energy
APPEARS IN
संबंधित प्रश्न
In what way does the temperature of water at the bottom of a waterfall differ from the temperature at the top? Explain the reason.
A metal ball of mass 2 kg is allowed to fall freely from rest from a height of 5 m above the ground. Taking g = 10 m s−2, calculate:
- the potential energy possessed by the ball when it is initially at rest.
- the kinetic energy of the ball just before it hits the ground?
State whether the object possess kinetic energy, potential energy, or both :
A man climbing a hill _____________.
Two bodies having equal masses are moving with uniform speeds of v and 2v respectively. Find the ratio of their kinetic energies.
Name the device or machine which convert :
Chemical energy into electrical energy.
Name the device or machine which convert :
Electrical energy into heat energy.
The hanging bob of a simple pendulum is displaced to one extreme position B and then released. It swings towards centre position A and then to the other extreme position C. In which position does the bob have :
(i) maximum potential energy?
(ii) maximum kinetic energy?
What do you understand by the term 'transformation of energy"? Explain with an example.
An object is falling freely from a height x. After it has fallen a height `pi/2` , it will possess :
In the case of negative work, the angle between the force and displacement is
