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प्रश्न
Explain with a diagram the step-by-step energy conversion in a nuclear power plant.
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उत्तर
In a nuclear power plant, energy is released by the fission of the nuclei of radioactive elements such as uranium or plutonium. This energy is used to produce steam at high temperature and pressure. The kinetic energy of the steam rotates the turbine. The rotating turbine drives the generator, which produces electricity.
Energy conversion:
Nuclear Energy → Thermal Energy → Kinetic Energy → Mechanical Energy → Electrical Energy.
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संबंधित प्रश्न
Arrange the following fuels in the order of decreasing calorific values (keeping the fuel with highest calorific value first):
Biogas, Kerosene, Wood, Petrol, Hydrogen gas, Methane
Arrange the following fuels in the order of increasing calorific values (keeping the fuel with lowest calorific value first):
LPG, Coal, Alcohol, Dung cakes, Diesel
What do you think is the purpose of the thick, concrete chamber surrounding the reactor of a nuclear power plant?
The following question are about the nuclear reactor of a power plant.
What is the purpose of using the graphite moderator?
In the reactor of a nuclear power plant, name the material which is used:
(a) as a moderator
(b) to absorb radiations
(c) in the fuel rods
(d) in the control rods
(e) to carry away heat
Which of the following can undergo nuclear fusion reaction?
(a) uranium
(b) deuterium
(c) barium
(d) krypton
Make the correct choices in the following:
(a) In one atom of copper (mass number 63, atomic number 29) there are
Which of the following statements are correct?
Neutrons have
One isotopes of uranium has a mass number of 235 and atomic number 92.
(a) What is the number of electrons in a neutral atom of this isotope?
(b) How many protons are there in the nucleus of this isotope?
(c) For another isotope of Uranium state which one of the numbers (238 or 92) changes?
(d) What is the number of protons in 238U?
What do you understand by radioactive decay? An isotope of Uranium `""_92^238 "U"` is radioactive and changes into Thorium 92 by the emission of an alpha particle. Write a symbolic equation for this decay process.
Complete the following nuclear change:
\[\ce{^24_11 Na -> ...Mg.... + ^0_-1β}\]
State, giving reason, whether the following nuclear decay are allowed or not?
\[\ce{_Z^AX ->_Z^{A-1}Y + _-1^0e}\]
An isotope of uranium is 92Y238, i.e., it has mass number 235 and atomic number 92.
Do all isotopes have the same number of neutrons?
In the power plant based on nuclear energy, __________ is used to rotate the generator.
When a neutron is bombarded on an atom of uranium, ____________ neutrons generated in this process.
Thermal power generation : Air pollution : : Nuclear power generation : _____________
In nuclear power plants, the chain reaction cannot be controlled.
Answer in one sentence.
Write the demerits of an atomic energy plant.
Give scientific reasons.
It is absolutely necessary to control the fission reaction in nuclear power plants.
Why is nuclear fission useful to mankind?
