WB TET · Mathematics and Science (Paper II)
Conventional and alternative sources of energy.
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Q1 · Sources of Energy · EASY
Which of the following is a non-renewable conventional source of energy?
Q2 · Sources of Energy · MEDIUM
A village uses biogas produced from cow dung for cooking. What is the main advantage of using biogas over traditional firewood?
Q3 · Sources of Energy · MEDIUM
Solar panels installed on the roof of a school building generate 6 units of electricity per day during summer. During monsoon, due to cloudy weather, the generation drops to 2 units per day. What is the percentage decrease in electricity generation during monsoon compared to summer?
Q4 · Sources of Energy · HARD
A hydroelectric power plant converts the potential energy of water stored in a dam into electrical energy. If the efficiency of conversion is 80% and the potential energy available is 5000 kilojoules, how much electrical energy in kilojoules is actually produced?
Q5 · Sources of Energy · HARD
Which of the following is a non-renewable source of energy that is formed from the remains of ancient marine organisms?