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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
If 25 atomic mass units (u) of a radioactive material are destroyed in a nuclear reaction, how much energy is released in MeV?
What will happen if slow moving neutrons are made to strike the atoms of a heavy element `''235_92U`? What is the name of this process?
How does inserting the control rods in the graphite core affect the fission in the reactor? Explain your answer.
Which produces more energy : nuclear fusion or nuclear fission?
Nuclear fission reactions are not a source of energy for one of the following. This is:
(a) atom bomb
(b) power plants
(c) sun
(d) pacemaker
Which of the following can undergo nuclear fusion reaction?
(a) uranium
(b) deuterium
(c) barium
(d) krypton
A nuclear reaction is represented by the following equation:
`""_92^235U+_0^1n-> _56^139Ba+_36^94Kr+xc+E`
Identify the particle c and the number x of such particles produced in the reaction.
A nuclear reaction is represented by the equation:
`""_1^2H+_1^2H->_2^3He+xc+E`
Identify the particle c and the number x of such particles produced in the reaction.
A nuclear reaction is represented by the equation:
`""_1^2H+_1^2H->_2^3He+xc+E`
What does E represent?
List any four characteristics of a good fuel.
Name the process used to harness nuclear energy these days. Explain it briefly. List two advantages of using nuclear energy in place of fossil fuels.
What is the meaning of mass number?
An atomic nucleus A is composed of 84 protons and 128 neutrons. It emits an α-particle and is transformed into nucleus B. Write down the composition of B.
A certain nucleus X has a mass number 14 and atomic number 6. The nucleus X changes to `"_7Y^14` after the loss of a particle. Represent this change in the form of an equation.
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.
Complete the following nuclear changes:
\[\ce {^238_92 P ->\underset{-}-{Q} + ^4_2He->\underset{-}-{R} + ^0_-1e}\]
Express 1 a.m.u. in MeV.
