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

  • VTM stands for voltage tunable magnetron.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • True 

    • Microwave Communication problems

    Search Results

    • 1. A line of characteristic impedance 400 ? is terminated by a resistance of 400 ?. The reflected quantities are

    • Options
    • A. zero
    • B. equal to incident quantities
    • C. half the incident quantities
    • D. double the incident quantities
      • Discuss
    • 2. Most electromagnetic transmission in rectangular wave-guide uses

    • Options
    • A. TE10 mode
    • B. TE01 mode
    • C. TE20 mode
    • D. TE11 mode
      • Discuss
    • 3. Which of the following lines behaves as infinite line?

    • Options
    • A. a line terminated in inductance
    • B. a line terminated in capacitance
    • C. a short line
    • D. a line terminated in z0
      • Discuss
    • 4. Radar reciever has high sensitivity and low noise figure

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. Which mode is called dominant mode in rectangular wave guide?

    • Options
    • A. TE01
    • B. TE11
    • C. TE10
    • D. TE20
      • Discuss
    • 6. The main advantage of TWT over klystron is

    • Options
    • A. higher bandwidth
    • B. higher gain
    • C. higher frequency
    • D. higher output
      • Discuss
    • 7. Fields are said to be circularly polarized if

    • Options
    • A. their magnitudes are equal
    • B. their magnitudes are equal and they differ in phase by ± 90°
    • C. their magnitudes are unequal and they differ in phase ± 90°
    • D. their magnitudes are unequal and they are in phase
      • Discuss
    • 8. The frequency of oscillations obtained from a reflex klystron depends mainly on

    • Options
    • A. resonant frequency of cavity
    • B. repeller voltage
    • C. voltage of focussing electrode
    • D. characteristics of cathode
      • Discuss
    • 9. Assertion (A): Two equal and opposite travelling waves result in a standing wave.

      Reason (R): The ratio of maximum to minimum value of a standing wave is called SWR.


    • 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. In TE and TM modes of rectangular waveguides having propagation in z direction

    • Options
    • A. Ez and Hz are both zero
    • B. In TE mode Ez is zero and in TM mode Hz is zero
    • C. In TE mode Hz is zero and in TM mode Ez is zero
    • D. In both TE and TM modes both Ez and Hz are non-zero
      • Discuss

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