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

  • If a microstrip is enclosed in a metal enclosure


  • Options
  • A. the radiation losses are increased
  • B. the radiation losses are reduced RL
  • C. the capacitance becomes zero
  • D. the inductance becomes zero

  • Correct Answer
  • the radiation losses are reduced RL 

    • Microwave Communication problems

    Search Results

    • 1. Consider the following statements (L is the length of array between centres of end antennas and A is wave-length)

      1. Width of major lobe between nulls of broad side array and end fire array are different.
      2. Directive gain of broadside array and end fire array are different.
      3. Directive gain of broadside array is 4
      Which of the above statements are correct?

    • Options
    • A. 1, 2 and 3
    • B. 1 and 2 only
    • C. 1 only
    • D. 1 and 3 only
      • Discuss
    • 2. In terms of R, L, G and C the propagation constant ? of a transmission line is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 3. A circular waveguide has an infinite set of TE and TM modes.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. Which of the following are true for magic tee in the given figure select the answer as per given codes

      1. S13 = S23
      2. S14 = S24
      3. S12 = 0
      4. S34 = 0

    • Options
    • A. 1, 2 and 3
    • B. 1, 2 and 4
    • C. 2, 3 and 4
    • D. 1, 3 and 4
      • Discuss
    • 5. Which of the following is used in integrated circuits?

    • Options
    • A. Microstrip line
    • B. Coaxial line
    • C. Twin wire line
    • D. Shield cable
      • Discuss
    • 6. In microwave detector used in laboratory measurements of relative power levels, standing wave ratio is about

    • Options
    • A. 0.1
    • B. 1.25
    • C. 5
    • D. 10
      • Discuss
    • 7. Loading of a line means

    • Options
    • A. increasing inductance of line
    • B. increasing distributed inductance of line
    • C. decreasing distributed inductance of line
    • D. decreasing inductance of line
      • Discuss
    • 8. A rectangular waveguide has two stubs each length connected at the source end. The stubs are short circuted. Then

    • Options
    • A. the longitudinal current is power current and current in stubs is reactive
    • B. the longitudinal current is reactive current and current in stubs is power current
    • C. both power and reactive exists in both longitudinal direction and stubs
    • D. the current in stubs is zero
      • Discuss
    • 9. A transmission line discontinuity is defined as any interruption in the uniformity of the line.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. Interference generated by electrical equipment and automobile ignition systems when observed closed to earth is

    • Options
    • A. horizontally polarized
    • B. vertically polarized
    • C. polarized both horizontally
    • D. not polarized
      • Discuss

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