17, A feeder uplink frequency (Ku band) is: A. 14MH R. 140 MHz C 1400 MH D. 1400

Question

17, A feeder uplink frequency (Ku band) is: A. 14MH R. 140 MHz C 1400 MH D. 14000MHz E. None of the above is true I8. In geo-synchronous orbits A. The orbital period is the half of Earth's orbital period. B. The orbital period is the same as that of Earth's orbital period. C. The orbital period is twice of Earth's orbital period. D. The orbital period is three times of Earth's orbital period. E. None of the above is true. 19. In geo-synchronous orbits: A. Only the weight of the satellite has an impact on the power needed to operate the satellite. B. The satellite is placed very close to Earth and, therefore, low-power satellites are needed to communicate with the compact ground antennas. C. The distance from Earth has no impact on the power needed to operate a satellite. D. The satellite needs to have sufficiently high power to communicate with the compact ground antennas. E. None of the above is true. 20. Non geo-stationary orbiting satellites: A. Have orbits farther from Earth as compared to geo-synchronous satellites B. Only a single satellite is needed in each orbit for effective communication. C. Have orbits closer to Earth as compared to geo-synchronous satellites D. Have orbits that can be closer to or farther from Earth as compared to geo-synchronous satellites, depending on the nee E. None of the above is true.

Explanation / Answer

17(d)

As the KU band have the frequency of 14GHz

18(b)

As the geo-synchronous satellite have the obit of earth. So Earth's orbital period is equal to geo-synchronous satellite.

19(d)

As the geo-synchronous satellite needs to contact with the antennas present on the Earth's surface. So it needs some adequate amount of power.

20(d)

As it is not having the orbit of the earth. So it may be far it near to earth depending upon the needs.

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