Renewable Source - Solar Energy
Renewable Source - Solar Energy
Renewable Source - Solar Energy:
Solar Cells: Solar cell is a device that converts solar energy directly into electrical energy. Earlier, it was observed that when solar rays fall on a thin wafer of selenium, clectricity is generated. A solar cell made of selenium wafer converts only 0.7% of solar energy into electrical energy, which is very small output and hence impracticable for generating clectricity. The first solar cell made in 1954 could convert about 1% of incident solar energy into clectricity. Modern solar cells most commonly made from semi-metal silicon can have efficiency of up to 25%. Silicon is easily available and is eco-friendly. A typical solar cell consisting of a 2 x 2 cm square piece of pure silicon can produce about o.7 watt electricity with about 10% efficiency. This electricity is quite small and to get large amount of electricity several solar cells are connected together in series. This arrangemnent is called Solar Panel.
Advantages:
1. Solar cells provide eco-friendly environment.
2. Solar cells can be used anywhere as a self-generating source of electricity.
Limitations:
1. The availability of the special grade silicon required for making solar cells is very limited.
2. The cost of connecting material used in solar panels is very high as it is generally silver.
3. The current produced by solar cells is direct current (DC) and it has to be converted to alternating current (AC) for some devices. This involves high cost and loss of efficiency.
4. The conventional method of storing solar energy in storage batteries is not efficient enough.Uses:
1. In artificial sațellites
2. In radio wireless transmission
3. In TV transmission
4. In traffic signals and research centres
5. In calculators and watches
6. In solar cars
Students / Parents Reviews [10]
About Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
10thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
