logo

CuriousTab

CuriousTab

Discussion

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

  • Radar principle is used in


  • Options
  • A. detection of aircraft
  • B. burglar alarms
  • C. garage door openers
  • D. all of the above

  • Correct Answer
  • all of the above 

    • Microwave Communication problems

    Search Results

    • 1. 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
    • 2. Slotted line can be used for measurement of high frequencies

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. 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
      • Discuss
    • 4. In the given figure the equivalent circuit of a T attenuator. If the condition for matched attenuator is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 5. 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
    • 6. 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
    • 7. 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
    • 8. Assertion (A): A line of length slightly more than and open circuited at far end is equivalent to an inductive reactance.

      Reason (R): A line of length slightly more than and short circuited at far end behaves as a capacitive reactance.


    • 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
    • 9. In TE mode of waveguide Ez = 0

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. The speed at which axial electric field due to signal advances in a TWT is equal to

    • Options
    • A. speed of light
    • B. (speed of light) (helix pitch helix circumference)
    • C. (speed of light) (helix circumference helix pitch)
    • D. (speed of light) (helix pitch) (helix circumference)
      • Discuss

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.