The Way Sciences Work : 2015-Spring Final Exam

1. Explain how an amplifier works.

2. Explain how a load speaker works.

3. What is spectral colour ? and what is non-spectral colour ? give two examples for each of them.

4. Explain what is a Transistor and how it works.

5. Both TV and Radio Tuners have LC circuits , give the name of phenomenon that makes the selection of particular station/channel frequency possible.

6. What are the advantage of using Number System in Mathematics ? How is this related to the invention of a computer ?

7. What is the difference between FM and AM radio ?

8. Draw picture and explain how a CCD (charged coupled device) work.

9. Describe the process of stamp-press production of DVD/CD discs.

10. Why laser is needed for DVD and LD drive ?