Previous Year Very Short Questions of DC (B-TECH electronics and communication engineering 6th)

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Digital communication

Previous year question paper with solutions for Digital communication

Our website provides solved previous year question paper for Digital communication . Doing preparation from the previous year question paper helps you to get good marks in exams. From our DC question paper bank, students can download solved previous year question paper. The solutions to these previous year question paper are very easy to understand.

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  1. Explain uniform and non-uniform companding.
  2. Explain fundamentals of Time Division Multiplexing.
  3. What are the advantages of digital communication systems over analog communication systems?
  4. Explain Gaussian minimum shift keying.
  5. Draw the waveforms of an unmodulated carrier, data, ASK, PSK and FSK.
  6. Differentiate between unipolar and bipolar signaling.
  7. What is MSK modulation scheme?
  8. State and explain the sampling theorem.
  9. What are guard bands and when it is used?
  10. What is quantization error?
  11. What is Inter Symbol interference?
  12. Draw the frequency spectrum of FSK.
  13. What is coding efficiency?
  14. What is Coherent detection? Give any one suitable example.
  15. What is Time division multiplexing?
  16. What is Information?
  17. Why is clock recovery required in a BPSK demodulator circuit?
  18. What is Manchester coding? Give its advantage.
  19. What is Shannon’s limit for Information capacity?
  20. Define the terms bit rate and baud rate.
  21. A receiver has an equivalent noise figure of 2 dB. Calculate its equivalent noise temperature.
  22. With diagram define the term Aliasing.
  23. Can we use DM practically as an alternative to PCM?
  24. Write the remedy to reduce inter symbol interference.
  25. Why do we need to use the discrete PAM formats?
  26. Why we prefer DPSK instead of BPSK?
  27. What is the difference between Line coding and source coding?
  28. Write the basic difference between Bandpass transmission and Passband transmission.
  29. What is the need of coherent detection?