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Home ‣ Electronics and Communication Engineering ‣ Microwave Communication Comments
  • Question

  • In microwave circuits, a mode transducer is used to


  • Options
  • A. change mode of wave transmission
  • B. change direction of wave transmission
  • C. change polarization of wave transmission
  • D. change mode, direction or polarization wave transmission

  • Correct Answer
  • change mode, direction or polarization wave transmission 

    • Microwave Communication problems

    Search Results

    • 1. In the given figure the equivalent circuit of a T attenuator. If the condition for matched attenuator is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 2. Which part of radio spectrum is more crowded?

    • Options
    • A. Lower frequency part
    • B. Higher frequency part
    • C. Both (a) and (b)
    • D. None of these
      • Discuss
    • 3. In a waveguide the dielectric region is generally

    • Options
    • A. air
    • B. magnetic material
    • C. brass
    • D. mica
      • Discuss
    • 4. Assertion (A): For a reciprocal microwave junction the S matrix is symmetrical.

      Reason (R): In a symmetrical matrix Sij = Sji.


    • Options
    • A. Both A and R are correct and R is correct explanation of A
    • B. Both A and R are correct but R is not correct explanation of A
    • C. A is correct but R is wrong
    • D. A is wrong but R is correct
      • Discuss
    • 5. The most commonly used magnetron is

    • Options
    • A. cylindrical
    • B. parallel plate
    • C. inclined plate
    • D. flat plate
      • Discuss
    • 6. Slotted line can be used for measurement of high frequencies

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. Which of the following is not used as a microwave mixer or detector?

    • Options
    • A. PIN diode
    • B. Crystal diode
    • C. Schottky barrier diode
    • D. Backward diode
      • Discuss
    • 8. Radar principle is used in

    • Options
    • A. detection of aircraft
    • B. burglar alarms
    • C. garage door openers
    • D. all of the above
      • Discuss
    • 9. Which one of the following is also called 'rat race'?

    • Options
    • A. E plane tee
    • B. H plane tee
    • C. Magic tee
    • D. Hybrid ring
      • Discuss
    • 10. A waveguide connected to a circularly polarized antenna must be able to efficiently propagate both vertically and horizontally polarised waves.

    • Options
    • A. True
    • B. False
      • Discuss

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