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What is the need for modulation ?...

What is the need for modulation ?

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What is the modulation ? What is need for modulation?

Write any two factors which justify the need of modulation for the transmission of the audio signals.

Write any two factors, which justify the need of modulation for the transmission of the audio signals.

BETTER CHOICE PUBLICATION-PRINCIPLES OF COMMUNICATION -SHORT ANSWER TYPE QUESTIONS
  1. Answer the following questions The small ozone layer on top of the s...

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  2. What is space wave propagation ? Why is it limited upto small distance...

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  3. What is the need for modulation ?

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  4. Why audio signals cannotbe transmitted directly into space ?

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  5. Explain basic elements of communication system with the help of block ...

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  6. What are the limitations of amplitude modulation ?

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  7. Give one difference between point to point mode of communication and b...

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  8. Why is ground wave propagation not suitable for high frequency ?

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  9. Explain the term ground waves propagation of radio-waves.

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  10. Explain why sky wave propagation is not possible for high frequency ra...

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  11. What is space wave propagation ? Give one example of communication sys...

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  12. Write any two factors, which justify the need of modulation for the tr...

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  13. Explain space wave propagation.

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  14. What do you mean by medium wave band and short wave band ?

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  15. Define frequency modulation.

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  16. What do you mean by medium wave band and short wave band ?

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  17. What is remote sensing? WHat are the uses of remote sensing satellites...

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  18. Compare amplitude modulation and frequency modulation.

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  19. Write any four advantages of optical fibre communication.

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  20. What is modem?

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