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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