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

  • Klystron amplifier is not used to amplifier very weak microwave signals due to


  • Options
  • A. low gain for weak signals
  • B. low noise for weak signals
  • C. high noise
  • D. both (a) and (b)

  • Correct Answer
  • high noise 

    • Microwave Communication problems

    Search Results

    • 1. In fibre optics the use is made of thin glass fibres for efficient transmission of light.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. An electromagnetic wave can be completely guided by a dielectric rod or slab.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. The earliest uses of electromagnetic waves were

    • Options
    • A. point to point communication
    • B. radar
    • C. both (a) and (b)
    • D. neither (a) nor (b)
      • Discuss
    • 4. In the given figure power meters at A and B indicate 1 mW and 110 ?W respectively. VSWR of line is

    • Options
    • A. 1.5
    • B. 2
    • C. 2.5
    • D. 3
      • Discuss
    • 5. In microstrip line has dielectric material most commonly used is

    • Options
    • A. silicon
    • B. rubber
    • C. plastic
    • D. bakelite
      • Discuss
    • 6. Which of the following modes in circular waveguides are circularly symmetric?

    • Options
    • A. TE01
    • B. TE02
    • C. both (a) and (b)
    • D. neither (a) nor (b)
      • Discuss
    • 7. The electrical requirement on wall thickness of rectangular wave guide is

    • Options
    • A. wall thickness is more than skin depth
    • B. wall thickness is less than skin depth
    • C. wall thickness is equal to skin depth
    • D. either (b) or (c)
      • Discuss
    • 8. Which mode is called dominant mode in rectangular wave guide?

    • Options
    • A. TE01
    • B. TE11
    • C. TE10
    • D. TE20
      • Discuss
    • 9. Radar reciever has high sensitivity and low noise figure

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. 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

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