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Engineering B.E. (Computer Engineering) Sem 3 Electronic Circuits and Communication Fundamentals May 2019 R16 Question Paper - Mumbai University | munotes

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

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Older exam Dec 2018 - CBSGS Semester-end · Electronic Circuits and Communication Fundamentals → Newer exam May 2019 - CBSGS Semester-end · Electronic Circuits and Communication Fundamentals →

Questions asked in this paper

  1. Q1 Attempt the following
    • A. Explain with diagram Input and output characteristic of Common base configuration 5
    • B. List the ideal Characteristic of op-amp 5
    • C. Calculate the percent power saving an SSB signal if the AM wave is modulated to a depth of (a) 100 % and (b) 50% 5
    • D. Define the term Information theory. Give definitions for Information Rate and Entropy 5
  2. Q2 A. For the circuit shown in Figure below calculate and Ip if B=100 10 marks
    • B. Explain how op-amp can be used as a differentiator. 10
  3. Q3 A. What do you mean by Zero Crossing detector? Explain with diagram 5 marks
    • B. Write Short note on generation of FM by Armstrong method. 5
    • C. Use op-amp IC741 to realize the expression
    • D. What is a Nyquist criteria? What is its significance 5
  4. Q4 Delta Modulation with neat diagram and waveforms after each block. 10 marks
    • B. An AM signal appears across a 50 load and has the following equation 10
    • 1. Sketch the envelope of this signal in time domain
    • 2. Calculate modulation index, sideband frequencies, total power and bandwidth
  5. Q5 A. Compare PAM,PWM and PPM pulse modulation techniques 10 marks
    • B. Explain the generation of DSBSC using Balance modulator 10
  6. Q6 do you mean by multiplexing? Explain TDM 10 marks
    • B. List down various parameters of op-amp with their practical values for IC741. 10 Explain common mode gain and differential mode gain

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