Model Questions and Answers for preparing Kerala PSC Last Grade Examination 2014.


Energy


1. The capacity to do work is known as?
Answer: Energy

2. Law of conservation of energy is introduced by?
Answer: Einstein

3. Prime source of energy?
Answer: Sun

4. Instrument used to convert mechanical energy into electrical energy?
Answer: Dynamo, Generator

5. Instrument used to convert chemical energy into electrical energy?
Answer: Cell

6. …………… convert electrical energy into light energy?
Answer: Electric bulb

7. Solar energy can be converted into electrical energy using?
Answer: Solar cell

8. Solar cells are made of?
Answer: Semiconductor materials


9. Semiconductors of solar cells are made with?
Answer: Germanium and Silicon





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