Advertisements
Advertisements
प्रश्न
Give scientific reason.
Hydropower, solar energy and wind energy are called renewable energy.
Advertisements
उत्तर
- The sources of energy which are being produced continuously in nature and are inexhaustible, i.e., they are always available for use are called renewable sources of energy.
- Hydropower, solar energy, wind energy are produced from energy sources like water, sunlight and wind respectively that are produced continuously in nature and will not get depleted.
Thus, hydropower, solar energy and wind energy are called renewable energy.
APPEARS IN
संबंधित प्रश्न
Why is the copper tube of a solar water heater painted black from outside?
Name some of the solar energy devices.
Fill in the following blank with suitable word:
A solar cell converts ................ energy into ................ energy.
Explain why, a plane mirror reflector is used in a box-type solar cooker.
Write the uses of solar cells.
In a solar water heater, why is the storage tank placed at a higher lever than the solar panel containing coils?
Name two devices which can be utilised for the cooking of food so as to save fuel.
Which of the following is used in solar cooker to harvest the solar energy?
a) Solar panels
b) Silicon cell
c) Mirrors
d) Glass lid
Draw 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.
A silicon solar cell of dimension 1 sq.cm. generates a current of about ___________.
Distinguish between the following.
Electricity generation from solar cells and solar thermal power generation
Complete the table.
| Limitations of Solar energy | Limitations of Wind energy |
Solar energy is a non depleting energy. Justify.
What is the disadvantage of solar energy?
Which one of the following forms of energy leads to least environmental pollution in the process of its harnessing and utilisation?
Choose the correct statement.
The installed capacity of the Kamuthi solar power project is ______ MW.
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?
