advance-communication-system-mcqs - Set (3)

Correct Answer: Orange && Worng Answer: Red

1. Which of the following is most widely used streaming video file format ?

  • (A). H 261
  • (B). H 262
  • (C). H 264
  • (D). None of these
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    Explanation: Not Avilable

    2. What is a pager in the paging system ?

  • (A). A transmitter
  • (B). A transceiver
  • (C). Both (a) and (b)
  • (D). A receiver
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    Explanation: Not Avilable

    3. A wifi enabled device can be ______

  • (A). Pc
  • (B). Mobile phone
  • (C). Both (a) and (b)
  • (D). None of these
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    Explanation: Not Avilable

    4. Which is thickest layer of lonosphere ?

  • (A). F1
  • (B). F2
  • (C). D
  • (D). E
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    Explanation: Not Avilable

    5. Bandwidth of Amplitude modulated signal is given by ______

  • (A). 2fm
  • (B). fc+fm-(fc-fm)
  • (C). fm
  • (D). Both (a) and (b)
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    Explanation: Not Avilable

    6. Armstrong method is used for generation of

  • (A). Direct F.M.
  • (B). Indireet F.M.
  • (C). SSB-SC
  • (D). DSB-SC
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    Explanation: Not Avilable

    7. The mutual information is ______

  • (A). Symmetric
  • (B). Always non-negative
  • (C). Both (a) and (b)
  • (D). None of these
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    Explanation: Not Avilable

    8. H(X,Y) = H(Y/X)+______

  • (A). H(X)
  • (B). H(Y)
  • (C). H(X/Y)
  • (D). H(X,Y)
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    Explanation: Not Avilable

    9. Channel capacity in communication system depends on

  • (A). Bandwidth
  • (B). S/N ratio
  • (C). Both (a) and (b)
  • (D). None of these
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    Explanation: Not Avilable

    10. Man made noise is usually from ______

  • (A). Sky-wave
  • (B). Space-wave
  • (C). Both (a) and (b)
  • (D). None of these
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    Explanation: Not Avilable

    11. Noise due to random behavior of charge carrier is ______

  • (A). Shot noise
  • (B). Flicker noise
  • (C). Partition noise
  • (D). None of these
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    Explanation: Not Avilable

    12. Noise equivalent temperature of a two stage cascade network is given by :

  • (A). Te1+Te1
  • (B). Te1/Te1
  • (C). Te1+Te2
  • (D). Te1+Te2/G1
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    Explanation: Not Avilable

    13. Power density is defined as ______ power per unit area.

  • (A). Reflected
  • (B). Refracted
  • (C). Radiated
  • (D). Diffracted
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    Explanation: Not Avilable

    14. Steradian is a measuring unit of ______

  • (A). Point angle
  • (B). Linear angle
  • (C). Plane angle
  • (D). Solid angle
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    Explanation: Not Avilable

    15. In Radar system the change in observed frequency is called ______

  • (A). Doppler shift
  • (B). Delta effect
  • (C). Delta shift
  • (D). None of these
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    Explanation: Not Avilable

    16. Frequency of Ku band for satellite communication is ______

  • (A). 6/4 GHz
  • (B). 14/11 GHz
  • (C). 12/14 GHz
  • (D). 4/8 GHz
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    Explanation: Not Avilable

    17. INTELSAT stands for

  • (A). Intel satellite
  • (B). Internal telephone satellite
  • (C). Internal telecommunication satellite
  • (D). None of these
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    Explanation: Not Avilable

    18. Multimode steps index fibre has a large core diameter of range ______

  • (A). 100 to 300 μm
  • (B). 100 to 300 nm
  • (C). 200 to 500 μm
  • (D). 200 to 500 nm
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    Explanation: Not Avilable

    19. When the base of logarithm is ‘2’, the unit of information is

  • (A). Bytes
  • (B). Bits
  • (C). Nats
  • (D). None of these
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    Explanation: Not Avilable

    20. Radar is used to find ______

  • (A). Location
  • (B). Movement
  • (C). Precipitation
  • (D). All of the above
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    Explanation: Not Avilable