1. Describe the requirement for the modulation.
2. What do you mean by amplitude modulation and modulation index?
3. prepare down the difference between frequency modulation and phase modulation.
4. prepare down the difference between frequency multiplier and frequency mixer.
5. describe the principle of synchronous detection.
6. What are the advantages of phase discriminators?
7. Define sampling theorem.
8. What do you mean by multiplexing? prepare down name of the two multiplexing techniques.
9. prepare down the advantages of facsimile system.
10. What do you mean by compatibility of TV system?