Class 10 Sources of Energy Previous Years Questions

Previous Years Questions Notes Important Questions

Sources of Energy Previous Years Questions

1. Write the energy conversion that takes place in a hydropower plant. [1 mark] [CBSE 2018]
2. What is a dam? Why do we seek to build large dams? While building large dams, which three main problems should particularly be addressed to maintain peace among local people? Mention them. [3 marks] [CBSE 2018]
3. Name the process used to harness nuclear energy these days. Explain it briefly. List two advantages of using nuclear energy in place of fossil fuels. [3 marks] [CBSE 2019]
4. Name two energy sources that you would consider to be renewable. Give justification for your choices. Can these energy sources be pollution free? List two reasons in support of your answer. [3 Marks] [CBSE 2019]
5. Answer question numbers 5(1)-5(4) on the basis of your understanding of the following paragraph and the related studied concepts:
   Solar power in India is a fast developing industry. The country’s solar installed capacity reached 30.071 GW as of 31 July, 2019. India has the lowest capital cost per MW to install solar power plants. Solar electricity generation recorded nearly 3.4% of total utility electricity generation in January 2019. The following table shows Annual Solar Power Generation of the last six years.

Year	Solar Power Generation (TWh)
2013 -14	3.35
2014 – 15	4.60
2015 – 16	7.45
2016 – 17	12.09
2017 – 18	25.87
2018 – 19	39.27

Our country is lucky to receive solar energy for the greater part of the year. It is estimated that during a year India receives the energy equivalent to more than 5000 trillion kWh from the sun.

1. What are solar cells?
2. How much voltage can be developed and how much electricity can be produced by one typical solar cell when exposed to the sun?
3. The future of power generation by solar energy is bright in India. Give reason.
4. List two advantages of solar cells [4 Marks] [CBSE 2020]