CHAPTER-11, COMMUNICATION SYSTEMS

1. In case of FM, the band width can take which of the following values

 
 
 
 

2. Which of the following is the communication channel in case of telephony ?

 
 
 
 

3. Which of the following is digital modulation technique ?

 
 
 
 

4. In which of the following cases, the increase in modulation index increases the band width ?

 
 
 
 

5. What happens in AM when the modulation index is more than 100%

 
 
 
 

6. What is the wavelength of charge having oscillating frequency 2 MHz ?

 
 
 
 

7. What are the major parts of a communication system ?

 
 
 
 

8. Analog-to-digital encoding is done by

 
 
 
 

9. A complete digital modulation can be obtained by

 
 
 
 

10. What is the function of a microphone ?

 
 
 
 

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