Satellite Communication Quiz Question with Answer

21. Which area is least effectively coverd by geostationary satellites?

  1. Equatorial region
  2. Polar region
  3. A and C
  4. None of the above

22. The angle subtended by earth at a geostationary communication satellite is nearly

  1. 66.5
  2. 47.34
  3. 17.34
  4. 7.34

23. Which is the most commanly employed modulation technique in the commercial communication satellite system?

  1. FM
  2. Digital modulation
  3. Analoge modulation
  4. All of the above

24. Compander

  1. Give a poor ratio of signal to duantizing error, for weaker signals
  2. Give preferential treatment to stronger parts of the signal
  3. Compresses the higher amplitude parts of a signal before modulation and expand them back to normal again after demodulation
  4. None of the above

25. INTELSAT stands?

  1. International Telecommunications Satellite
  2. India Telecommunications Satellite
  3. Inter Telecommunications Satellite
  4. None of the above

26. Define frame efficiency.

  1. It is a measure of the fraction of frame time used for the transmission of Traffic
  2. It is a measure of the fraction of information time used for the transmission of Traffic.
  3. a&b
  4. None of above

27. With reference to satellite communication, the anti-jamming technique preferred is

  1. key leverage
  2. Frequency hopping
  3. Once-only key
  4. Frequency-spectrum modulation

28. The main advantage of satelliite comminication is

  1. Low cost
  2. Low distortion
  3. High reliability
  4. High band width

29. In TV broadcast via satellite the TV signal from the main broadcast station is routed to the earth station via

  1. Low power transmitters
  2. Microwave links
  3. TV relay stations
  4. microwave repeater stations

30. Satellite recieves signal from

  1. Microwave repeater stations
  2. TV relay station
  3. Appropriate earth station
  4. All of the above

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