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प्रश्न
Give scientific reasons.
The construction of turbine is different for different types of power plants.
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उत्तर
- Generators produce electricity on the principle of electromagnetic induction and therefore require continuous rotation.
- This rotation is provided by turbines. Different power plants use different energy sources, such as steam, flowing water, wind, or gas, to rotate the turbines.
- Since the nature, pressure, speed, and flow of these energy sources are different, the turbines must be specially designed to operate efficiently with each source.
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संबंधित प्रश्न
The calorific values of five fuels A, B, C, D and E are given below:
| A | 48KJ/g |
| B | 17KJ/g |
| C | 150KJ/g |
| D | 50KJ/g |
| E | 30KJ/g |
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
Name the type of nuclear reaction which is involved in the working of:
an atom bomb.
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What is the purpose of using the graphite moderator?
The control rods used in the reactor of a nuclear power plant are made of:
(a) steel
(b) graphite
(c) uranium
(d) boron
An uncontrolled nuclear chain reaction forms the basis of:
(a) nuclear power plant
(b) hydrogen bomb
(c) thermal power station
(d) atom bomb
A nuclear power plant is working normally. What would you do if the reactor core suddenly got too hot?
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.
In what way are these numbers related to the isotopes of an element?
What do you mean by nuclear energy? What is responsible for its release?
Complete the following nuclear change:
\[\ce{_92P^238->[-α] ...P1 ... ->[-β]...P2 ... ->[-β] ... P3 ...}\]
What will an alpha particle change into when it absorb two electrons.
How does the position of an element change in the periodic table when it emits out a beta particle?
What happens to the atomic number of an element when it emits an alpha particle.
The nucleus B emit a β-particle and is transformed into nucleus C. What is the composition of C?
State the energy conversion taking place in a solar cell.
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Answer in one sentence.
Write the merits of atomic energy.
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