Advertisements
Advertisements
Question
What kind of energy transformations take place at a coal-based thermal power station?
Advertisements
Solution
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
RELATED QUESTIONS
Show that the sum of kinetic energy and potential energy (i.e., total mechanical energy) is always conserved in the case of a freely falling body under gravity (with air resistance neglected) from a height h by finding it when
- The body is at the top.
- the body has fallen a distance x.
- the body has reached the ground.
A stone of mass 500 g is thrown vertically upwards with a velocity of 15 m/s. Calculate:
- the potential energy at the greatest height,
- the kinetic energy on reaching the ground, and
- the total energy at its half-way point.
What kind of energy is possessed by the following?
A running car ____________
What kind of energy is possessed by the following?
Water stored in the reservoir of a dam __________.
What type of energy is possessed : by the stretched rubber strings of a catapult?
Name the device or machine which convert :
Electrical energy into heat energy.
Fill in the blank with suitable word:
The electricity meter installed in our homes measure electrical energy in the units of ___________.
A bulb lights up when connected to a battery. State the energy change which takes place :
What do you understand by the term 'transformation of energy"? Explain with an example.
How much energy does a 100 W electric bulb transfer in 1 minute?
