logo

CuriousTab

CuriousTab

Discussion


Home Electronics and Communication Engineering Microwave Communication Comments

  • Question
  • In a multicavity klystron amplifier the electron velocity of the order of


  • Options
  • A. 10 m/s
  • B. 103 m/s
  • C. 106 m/s
  • D. 1012 m/s

  • Correct Answer
  • 106 m/s 


  • Microwave Communication problems


    Search Results


    • 1. In a shield helix

    • Options
    • A. the spacing between adjacent turns is very large
    • B. the spacing between adjacent turns approaches zero
    • C. the spacing between adjacent turns approaches zero and wire thickness approaches zero
    • D. the spacing between adjacent turns is very large wire thickness approaches zero
    • Discuss
    • 2. In a coaxial line

    • Options
    • A. the characteristic impedance is less than that of two wire line
    • B. the wave velocity is less than that of two wire line
    • C. both (a) and (b)
    • D. neither (a) nor (b)
    • Discuss
    • 3. The scattering matrix of magic tee is

    • Options
    • A.
    • B.
    • C.
    • D.
    • Discuss
    • 4. TM01 mode in circular waveguide is analogous to

    • Options
    • A. TM10 mode in square waveguide
    • B. TM11 mode in square waveguide
    • C. TM20 mode in square waveguide
    • D. TM02 mode in square waveguide
    • Discuss
    • 5. In TE10 mode the largest electric field in a rectangular wave guide, occurs

    • Options
    • A. along centre line of broad wall (i.e. x = a/2)
    • B. along the broad wall (i.e. x = 0 and x = a)
    • C. either (a) or (b)
    • D. neither (a) nor (b)
    • Discuss
    • 6. Which of these statements is correct?

    • Options
    • A. Ridge guide is essentially a form of capacitively loaded guide.
    • B. Ridge guide is essentially a form of inductively loaded guide.
    • C. Ridge guide is essentially a form of resistively loaded guide.
    • D. Ridge guide has higher power handling capacity than rectangular waveguide.
    • Discuss
    • 7. Guide wavelength (?g), cutoff wavelength (?c) and free space wavelength (?0) of a waveguide are related as

    • Options
    • A.
    • B.
    • C.
    • D.
    • Discuss
    • 8. Which modes of circular wave guides have circular symmetry?

    • Options
    • A. TE11
    • B. TE11 and TE21
    • C. TE01
    • D. TE01 and TM01
    • Discuss
    • 9. In a Gunn diode oscillator drift velocity of electron is 107 cm/s and active region length is 10 x 10-4 cm. The natural frequency of oscillation is

    • Options
    • A. 1 MHz
    • B. 10 MHz
    • C. 1 GHz
    • D. 10 GHz
    • Discuss
    • 10. For a given operating frequency a waveguide has more power handling capacity than a coaxial line.

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


    Comments

    There are no comments.

Enter a new Comment