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InsemAug 20252019 patternBE E&TC

Radiation & Microwave Theory (RMT) SPPU Insem Question Paper Aug 2025

All 4 questions from this SPPU insem paper, as printed. Read them here or open the PDF.

Open the PDFMost repeated RMT questions
Subject code
404181
Pattern
2019 pattern
Exam
Insem
Session
Aug 2025
Max. marks
30
Time
1 Hour
Semester
VII
Paper code
[6580]-593

Printed for: B.E. (E&TC) (Insem.)

Instructions to the candidates

  1. Answer Q1 or Q2, Q3 or Q4.
  2. Figures to the right side indicate full marks.
  3. Neat diagrams must be drawn wherever necessary.

Questions

  1. Q1

    1. a)

      Justify the importance of polarization in wireless communication. Explain various types of polarization types.

      [7]
    2. b)

      Explain various radiation patterns of an antenna in detail.

      Also asked:Sep 2024

      [4]
    3. c)

      In a satellite communication system, the satellite is to be placed at 36000 km above the earth and communicated at 4 GHz using transmitting antenna with gain 20 dB and receiving antenna with gain 40 dB. Evaluate the free space transmission loss and the power received when the transmitted power is 200 Watt assuming the free space condition.

      [4]

  2. Q2

    1. a)

      An antenna has a radiation resistance of 8 ohm and loss resistance of 8 ohm with power gain of 12dB. Determine antenna efficiency and its directivity.

      [5]
    2. b)

      Compare far field and near field region for an antenna.

      [4]
    3. c)

      Explain in details radiation mechanisms of an antenna.

      Also asked:Sep 2023 ·Oct 2022

      [6]

  3. Q3

    1. a)

      Justify any three advantages of microwave engineering.

      [6]
    2. b)

      This part has equations that don’t show as text. Open the PDF to read it.

      [3]
    3. c)

      For a rectangular waveguide with dimensions 4 × 2 cms, determine the guide wavelength, phase velocity and phase constant at a freespace wavelength of 6 cm for the dominant mode

      [6]

  4. Q4

    1. a)

      Explain the strip line structural details, types and applications.

      [5]
    2. b)

      An air filled rectangular wave guide of inside dimensions 7 × 3.5 cm operates in the dominant TE mode. Determine cut-off frequency, phase velocity in a guide and guided wavelength at frequency of 3.5 GHz.

      [6]
    3. c)

      Give the comparison between waveguides and co-axial cables. 

      Also asked:Sep 2023 ·Oct 2022

      [4]