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Engineering B.E. (Computer Engineering) Sem 3 Electronic Circuits and Communication Fundamentals Dec 2019 CBSGS Question Paper - Mumbai University | munotes

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Electronic Circuits And Communication Fundamentals Question Paper, Dec 2019.pdf
CMPN · 1 May 2025

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Older exam Dec 2019 - R16 Semester-end · Electronic Circuits and Communication Fundamentals → Newer exam 2022 - Summer Semester-end · Electronic Circuits and Communication Fundamentals →

Questions asked in this paper

  1. Q1 Attempt the following
    • a) Draw and explain block diagram of op-amp 5
    • b) Compare BJT and FET 5
    • c) Justify that JFET can be used as voltage variable resistor 5
    • d) What are the drawbacks in Delta Modulation? How to overcome them? 5
  2. Q2 A. Explain Balanced modulator for DSB signal. 10 marks
    • B. Explain block diagram of PLL. 10
  3. Q3 A. Explain op-amp as inverting and non-inverting Amplifier. 10 marks
    • B. Write short note on generation of FM by Armstrong method. 10
  4. Q4 A. What is modulation index for AM and FM. An AM signal has a total power of 48 Watts with 45% modulation. Calculate the power in the carrier and the sidebands 10 marks
    • B. Explain Super-heterodyne receiver along with waveforms for each stage. 10
  5. Q5 A. What is multiplexing in Communication system? Explain TDM in detail. 10 marks
    • B. Explain generation of PAM. 10
  6. Q6 Write Short note (any two) 20 marks
    • b) Construction of n channel FET
    • c) Characteristics of op-amp

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