logo

CuriousTab

CuriousTab

Discussion

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

  • 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)

  • Correct Answer
  • (speed of light) (helix pitch helix circumference) 

    • Microwave Communication problems

    Search Results

    • 1. In TE mode of waveguide Ez = 0

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. 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
    • 3. 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
    • 4. 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
    • 5. Radar principle is used in

    • Options
    • A. detection of aircraft
    • B. burglar alarms
    • C. garage door openers
    • D. all of the above
      • Discuss
    • 6. A line of length slightly less than and short circuited at far end behaves as

    • Options
    • A. inductance L
    • B. capacitance C
    • C. L and C in series
    • D. L and C in parallel
      • Discuss
    • 7. In directional coupler of the given figure, the terms |S14| and |S23| of scattering matrix are nearly

    • Options
    • A. 1 each
    • B. 0.5 each
    • C. 0.1 each
    • D. 1 and 0.5 respectively
      • Discuss
    • 8. Depth of penetration does not depend on frequency.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. Assertion (A): Slotted line is frequently used for microwave measurements.

      Reason (R): The unknown impedance is mounted at the end of slotted line.


    • 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
    • 10. Assertion (A): Inter-digitated geometry is widely used for microwave transistors.

      Reason (R): Tuning at input and output of transistor uses MOS chip capacitors.


    • 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

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.