Final Exam 2018 Autumn Term

1. High temperature in microscopic world means atoms and molecules are spinning very fast.

2. It is safe to look at food through mesh door during the process of microwave cooking.

3. Inverter ( variable frequency ) air conditioning save electric bill because the parts are lighter.

4. Conceptually, the exoskeleton armor in science fiction film Iron Man is an example of an amplifier.

5. High frequency sound could not be generated by large loud-speaker.

6. One advantage of Number system is representing large number in very short numeric symbols.

7. AM radio channels usually has better sound / music quality than FM ones.

8. LC circuit works in radio as a tuner based on the principle of resonance.

9. Both laser and LED can be used as light source in a DVD drive.

10. Multi-write DVD disc has longer data preserving life time than those write-once alternatives.