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प्रश्न
Make a table based on forms of energy and corresponding devices:
| Forms of Energy | Devices | |
| a. | Electric | _________ |
| b. | Mechanical | Sewing machine, Bicycle |
| c. | Thermal | __________ |
| d. | _________ | Solar cooker, Solar heater |
उत्तर
| Forms of Energy | Devices | |
| a. | Electric | Electric Fan, Electric iron |
| b. | Mechanical | Sewing machine, Bicycle |
| c. | Thermal | Steam Engine, Steam turbine |
| d. | Solar | Solar cooker, Solar heater |
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संबंधित प्रश्न
What are the advantages and disadvantages of using a solar cooker? Are there places where solar cookers would have limited utility?
Name some of the solar energy devices.
What type of reflector is used in a box-type solar cooker?
Name the device which converts sunlight into electricity.
What is a solar cell? Draw the labelled diagram of a solar cell.
Name the semi-conductor material which is usually used for making solar cells.
Why is the solar cooker box covered with a glass sheet?
What differences would you expect in the charging of car batteries (i) in bright sunlight (ii) on a cloudy day (iii) at night?
Name two devices which can be utilised for the cooking of food so as to save fuel.
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.
What are the major utilizers of solar energy in the world?
A silicon solar cell of dimension 1 sq.cm. generates a current of about ___________.
A silicon solar cell of dimension 1 sq.cm. generates __________ potential difference.
Power available from solar cells : DC : : power require to run domestic equipments : _________
The potential difference available from a solar cell depends on its area.
Solar reflectors are important, why?
Solar energy is a non depleting energy. Justify.
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?
