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EndsemNov 20232019 patternBE E&TC

Radiation & Microwave Theory (RMT) SPPU Endsem Question Paper Nov 2023

All 8 questions from this SPPU endsem paper, as printed. Read them here or open the PDF.

Open the PDFMost repeated RMT questions
Subject code
404181
Pattern
2019 pattern
Exam
Endsem
Session
Nov 2023
Max. marks
70
Time
2½ Hours
Semester
VII
Paper code
[6181]-175

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

Instructions to the candidates

  1. Answer Q1 or Q2, Q3 or Q4, Q5 or Q6, Q7 or Q8.
  2. Neat diagrams must be drawn wherever necessary.
  3. Figures to the right carries full marks.
  4. Assume suitable data, if necessary.

Questions

  1. Q1

    1. a)

      State the properties of S-matrix and derive S matrix for H plane Tee.

      Also asked:May 2024

      [6]
    2. b)

      Explain the operating principle of two hole directional coupler with its S-matrix.

      Also asked:Nov 2025 ·May 2025 ·May 2024 ·May 2023 ·Nov 2022

      [6]
    3. c)

      An isolator has an insertion loss of 0.5 dB and an isolation of 30 dB. Determine the scattering matrix of the isolator if the isolated ports are perfectly matched to the junction.

      Also asked:May 2024 ·May 2023

      [6]

  2. Q2

    1. a)

      Explain how Magic Tee is used for impedance measurement.

      Also asked:Nov 2022

      [6]
    2. b)

      Explain in brief the working principle of a circulator.

      [6]
    3. c)

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

      [6]

  3. Q3

    1. a)

      Explain a TWT amplifier. Which type of slow wave structure is used in TWTA and Why?

      [6]
    2. b)

      How bunching is achieved in cavity Magnetron. Explain the phase focusing effect.

      Also asked:May 2024 ·May 2023 ·Nov 2022

      [6]
    3. c)

      Distinguish between TWTA and Klystron Tube.

      Also asked:May 2024 ·May 2023

      [6]

  4. Q4

    1. a)

      With the help of suitable diagram explain the operating principle of single cavity Reflex Klystron.

      [6]
    2. b)

      Explain construction, operation of Two Cavity Klystron amplifier.

      Also asked:Nov 2025 ·Nov 2024 ·May 2024 ·May 2023

      [6]
    3. c)

      Give the limitation of conventional tubes at microwave frequencies?

      Also asked:May 2024 ·May 2023 ·Nov 2022

      [6]

  5. Q5

    1. a)

      Explain the principle of operation, construction, characteristics of Microwave transistors.

      [6]
    2. b)

      Explain the operation of PIN diode as a) Amplitude Modulator

    3. b)

      Switch.

      [6]
    4. c)

      Explain the constructional details and VI characteristics of Schottky barrier diode.

      [5]

  6. Q6

    1. a)

      Explain the working principle of Varactor diode

      Also asked:Nov 2025 ·Nov 2024 ·May 2024 ·May 2023 ·Nov 2022

      [6]
    2. b)

      Explain the following modes in the Gunn Oscillator : i) Transit time domain mode. ii) Delayed or Inhibited domain mode. iii) Quenched domain mode. iv) Limited space charge. Accumulation LSA mode.

      [6]
    3. c)

      Write a short note on IMPATT diode.

      [5]

  7. Q7

    1. a)

      Differentiate between Satellite and Terrestrial Communication System.

      [6]
    2. b)

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

      [6]
    3. c)

      Write a note on radiation hazard levels for personnel.

      Also asked:May 2025

      [5]

  8. Q8

    1. a)

      In light on the Industrial applications of microwaves : Microwave Heating.

      [6]
    2. b)

      Explain reflectometer method for measurement of impedance.

      Also asked:May 2024

      [6]
    3. c)

      How Calorimeter technique is used for measurement of Medium power at Microwave frequency. 

      [5]