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प्रश्न
Observe the figure and label it properly:
- What is the figure related to?
- Why are reflectors used?
- Draw a flow chart showing different stages in such a process.
- How is the process used to generate electricity?
- What other method can be used to generate electricity using the same energy source?
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उत्तर
- The figure is related to schematic diagram of the solar thermal power plant.
- Many reflectors reflect and concentrate solar radiation on absorbers.
- Thermal energy is first created from solar radiation's energy. Then, using that thermal energy, a turbine generator system is operated to produce electricity.
- Solar photovoltaic cells immediately transform the energy of solar radiation into electrical energy. The solar photovoltaic effect is what causes this. This energy transfer process results in the creation of DC electrical energy.
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संबंधित प्रश्न
What is the range of temperature which can be achieved in a box-type solar cooker in two to three hours?
Write the uses of solar cells.
State the advantages and disadvantages of using solar cells.
If the energy received by 5 m2 area in 10 minutes is 4200 kJ, calculate the value of solar constant.
The value of solar constant is:
(a) 1.4 kWh
(b) 1.4 kW/m
(c) 1.4 kW/m2
(d) 1.4 kW/m3
The radiations present in sunlight which make a solar cooker work are:
(a) visible light rays
(b) ultraviolet rays
(c) comic rays
(d) infrared rays
In many applications, solar cells are connected to rechargeable batteries. Why is this so?
What differences would you expect in the charging of car batteries (i) in bright sunlight (ii) on a cloudy day (iii) at night?
Draw a neat and labelled diagram.
One solar panel produces a potential difference of 18 V and current of 3 A. Describe how you can obtain a potential difference of 72 Volts and current of 9 A with a solar array using solar panels. You can use sign of a battery for a solar panel.
Re-write the statement by selecting the appropriate option.
The solar lamp uses the ................... energy.
Which of the following solar radiations pass through the atmosphere of Earth: X -rays, ultraviolet rays, visible light rays or infrared radiation?
A silicon solar cell of dimension 1 sq.cm. generates a current of about ___________.
The potential difference available from a solar cell depends on its area.
Give scientific reason.
Hydropower, solar energy and wind energy are called renewable energy.
Complete the table.
| Limitations of Solar energy | Limitations of Wind energy |
What is the disadvantage of solar energy?
Choose the correct statement.
