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ECE :: Satellite Communication

  1. For satellite transmission, analog signals may be converted into digital form with the help of

  2. A.
    modem
    B.
    transponder
    C.
    codec
    D.
    compandor

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  3. The maximum signal propagation time of a geosynchronous satellite transmission is about __________ millisecond.

  4. A.
    540
    B.
    270
    C.
    135
    D.
    1080

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  5. The life time of a geosynchronous communication

  6. A.
    5
    B.
    10
    C.
    20
    D.
    50

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  7. The traffic-handling capacity of an Earth station on the uplink depends on

  8. A.
    its EIRP
    B.
    satellite antenna gain
    C.
    noise associated with the satellite
    D.
    all of the above

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  9. System satellites orbit the Earth once in

  10. A.
    24 hours
    B.
    12 hours
    C.
    1 hours
    D.
    6 hours

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  11. The lowest frequency used in satellite communications is __________ GHz.

  12. A.
    0.8
    B.
    3
    C.
    18
    D.
    30

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  13. Geosynchronous satellites are always launched in the equatorial plane because it is the only plane which provides

  14. A.
    24-hour orbit
    B.
    stationary satellite
    C.
    global communication
    D.
    zero-gravity environs

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  15. A few minutes disturbance in space communications occurs twice a year during Sunblinding when __________ are in line.

  16. A.
    Sun and satellite
    B.
    Sun and Earth station
    C.
    Satellite and Earth station
    D.
    Sun, satellite and Earth station

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