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

  • 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)

  • Correct Answer
  • both (a) and (b) 

    • Microwave Communication problems

    Search Results

    • 1. 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
    • 2. In microstrip line has dielectric material most commonly used is

    • Options
    • A. silicon
    • B. rubber
    • C. plastic
    • D. bakelite
      • Discuss
    • 3. The manufacturing technique used to manufacture strip type transmission line is

    • Options
    • A. photoetching technique
    • B. oxidation technique
    • C. cladding
    • D. epitaxial
      • Discuss
    • 4. Performance of a PIN diode switch is represented by

    • Options
    • A. insertion loss when switch is off
    • B. insertion loss when switch is on
    • C. insertion loss when switch is on and isolation loss when switch is off
    • D. insertion loss when switch is off and isolation loss when switch is on
      • Discuss
    • 5. Microwaves

    • Options
    • A. get reflected by ionosphere
    • B. are absorbed by ionosphere
    • C. are neither reflected nor absorbed by ionosphere
    • D. are both reflected and absorbed by ionosphere
      • Discuss
    • 6. An electromagnetic wave can be completely guided by a dielectric rod or slab.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. In fibre optics the use is made of thin glass fibres for efficient transmission of light.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. 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)
      • Discuss
    • 9. 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
    • 10. 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

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