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Home ‣ Electronics and Communication Engineering ‣ Satellite Communication See What Others Are Saying!
  • Question

  • In the context of error detection in satellite transmission, ARQ stands for


  • Options
  • A. Automatic Repeat Request
  • B. Automatic Relay Request
  • C. Accelerated Recovery Request
  • D. Automatic Radiation Quenching

  • Correct Answer
  • Automatic Repeat Request 

    • More questions

    • 1. In figure The minimum and maximum load currents are

    • Options
    • A. 0 and 60 mA
    • B. 0 and 120 mA
    • C. 10 mA and 60 mA
    • D. 10 mA and 120 mA
      • Discuss
    • 2. When a potential is applied across an intrinsic semiconductor, holes flow

    • Options
    • A. towards positive terminal
    • B. away from positive terminal
    • C. in the external circuit only
    • D. none of the above
      • Discuss
    • 3. A cordless telephone using separate frequencies for transmission in base and portable units is known as

    • Options
    • A. duplex arrangement
    • B. half duplex arrangement
    • C. either (a) or (b)
    • D. neither (a) nor (b)
      • Discuss
    • 4. The purpose of incorporating a pre-selector stage in a receiver is to

    • Options
    • A. provide higher selectivity
    • B. provide higher fidelity
    • C. improve linearity
    • D. larger passband
      • Discuss
    • 5. Paramagnetic materials have permanent magnetic dipoles but interaction between neighbouring dipoles is negligible.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. Semi conducting materials are all

    • Options
    • A. elements
    • B. compounds
    • C. elements or compounds
    • D. elements or mixtures
      • Discuss
    • 7. A device which converts BCD to seven segment is called

    • Options
    • A. encoder
    • B. decoder
    • C. multiplexer
    • D. none of these
      • Discuss
    • 8. The distance of a synchronous satellite from Earth's surface is __________ km.

    • Options
    • A. 300
    • B. 10000
    • C. 35900
    • D. 5
      • Discuss
    • 9. The ratio of the diffusion coefficient in a semiconductor has the units

    • Options
    • A. V-1
    • B. em.V-1
    • C. V.cm-1
    • D. V.s
      • Discuss
    • 10. A DIAC has two terminals, anode and cathode.

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

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