The minimum number of geostationary satellites needed for uninterrupted global coverage is
(A) 3 satellites
(B) 2 satellites
(C) 4 satellites
(D) 1 satellites
Correct Answer : 2 satellites
Question Asked : SSC Multi-Tasking (Non-Technical) Staff Exam 2011
Explanation : In theory, 2 satellites in diametrically opposite geosynchronous orbits could cover the planet. In order for the satellites to communicate, a minimum of 3 would be needed, each at a 60 degree angle to the others. At this point, the strength and quality of coverage Increases proportionally to the number of satellites.
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