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EndsemNov 20242019 patternBE E&TC

Radiation & Microwave Theory (RMT) SPPU Endsem Question Paper Nov 2024

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 2024
Max. marks
70
Time
2½ Hours
Semester
VII
Paper code
[6354]-528

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

Instructions to the candidates

  1. Answer the Q1 or Q2, Q3 or Q4, Q5 or Q6, Q7 or Q8.
  2. Neat diagram must be drawn wherever necessary.
  3. Figures to the right side indicate full marks.
  4. Use of Calculator is allowed.
  5. Assume suitable data if necessary.

Questions

  1. Q1

    1. a)

      A 2 Watt power source is connected to the input of a directional coupler with C = 20dB, D = 25 dB, and an insertion loss of 0.7 dB. Find the output power at the output. Coupled and isolated ports Assume all the ports to he matched.

      [6]
    2. b)

      Draw and explain circulator.

      [6]
    3. c)

      Explain the E - Plane Tee with the help of constructional diagram.

      [6]

  2. Q2

    1. a)

      Explain any one application of magic tee with releant diagram.

      [6]
    2. b)

      Explain construction & working of isolator.

      [6]
    3. c)

      Explain construction and working of H plane tee.

      Also asked:May 2023

      [6]

  3. Q3

    1. a)

      Explain the operation of two cavity klystron amplifier with neat constructional diagram.

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

      [6]
    2. b)

      List the limitations of conventional Tubes? Explain the Interelectrode Capacitance effect in tube.

      [6]
    3. c)

      Explain Reflex klystron with its constructional diagram.

      Also asked:May 2025 ·Nov 2022

      [6]

  4. Q4

    1. a)

      Explain with construction diagram & Operation of Helix type travelling wave tube (TWT).

      [6]
    2. b)

      Compare the ‘O’ type klystron tube & ‘M’ magnetron tube based on an three points

      [6]
    3. c)

      Explain the working of Cavity magnetron with constructional diagram. 2

      [6]

  5. Q5

    1. a)

      Explain construction and working of Tunnel Diode with its VI characteristics.

      Also asked:Nov 2025

      [6]
    2. b)

      Compare the IMPATT Diode with TRAPATT Diode

      [6]
    3. c)

      Explain the construction & working of Varactor diode

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

      [5]

  6. Q6

    1. a)

      With the help of constructional diagram explain the working of Schottky Barrier Diode.

      Also asked:May 2024 ·May 2023

      [6]
    2. b)

      Explain Gunn diode. With its construction and VI characteristics.

      [6]
    3. c)

      Draw constructional diagram and explain the PIN diode state its application.

      Also asked:Nov 2025 ·May 2025

      [5]

  7. Q7

    1. a)

      Write short note on applications of Microwave system.

      [5]
    2. b)

      With the help of block diagram. explain the Impedance measurement using a slotted line.

      Also asked:Nov 2025

      [6]
    3. c)

      Explain the measurement set up to measure VSWR using Tunable Probe Detector.

      [6]

  8. Q8

    1. a)

      Explain how the unknown frequency and wavelength can be measured using the slotted line technique.

      [7]
    2. b)

      Explain radiation hazards and safety precaution to avoid them.

      [6]
    3. c)

      Two identical directional couplers are used in a waveguide to sample the incident and reflected powers. The output of the two couplers are found to be 2.5 mW and 0.25 mW. Determine the VSWR in the waveguide. 

      [4]