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fundamental of communication system — Minor 1 2026 question paper

MMMUT Electronics and Communication Engineering previous year question paper for fundamental of communication system (BEC 152), semester 2, Minor 1 2026. All 8 questions are listed below, each with a written answer on Nexsus.

Paper details

  • Subject: fundamental of communication system (BEC 152)
  • Branch: Electronics and Communication Engineering
  • Semester: 2
  • Exam: Minor 1 2026
  • Questions: 8

Questions asked in fundamental of communication system Minor 1 2026

  1. Q1(a). Explain Amplitude Modulation with mathematical expressions and suitable diagram. A modulating signal m(t) = 10cos(2pi * 10^3 t) is amplitude modulated with a carrier signal c(t) = 50cos(2pi * 10^3 t). Find the modulation index, the carrier power, and the power required for transmitting AM wave. [3 marks]
  2. Q1(b). Discuss SSB-SC-AM and drive the expression for bandwidth and power for the wave. Also mention some its advantages disadvantage and its applications. [2 marks]
  3. Q1(c). Define modulation and its need. Classify modulation and differentiate between analog and digital modulation. [2 marks]
  4. Q2(a). Derive the expression for frequency modulated (FM) signal with suitable diagram. Consider an FM s(t) = 10cos(2pi * 10^6 t + 8sin(4pi * 10^3 t)). Determine i) Modulation index ii) maximum frequency deviation iii) power and iv) bandwidth. [3 marks]
  5. Q2(b). Discuss Narrowband and wideband frequency modulation. List the different generation method for WB frequency modulation. [2 marks]
  6. Q2(c). Derive the expression for maximum frequency deviation of phase modulated (PM) signal and maximum phase deviation of frequency modulated (FM) signal. [2 marks]
  7. QQ1.. Attempt any Two parts of the following. Q. 1 (a) is compulsory
  8. QQ2.. Attempt any Two parts of the following. Q. 1 (a) is compulsory