11. …… is an international system
(a) ATS – G
(b) INTELSAT
(c) INSAT
(d) All of the above
12. The number of satellites needed for global communication is :
(a) 1
(b) 2
(c) 3
(d) 8
13. A communication satellite is a repeater between :
(a) A transmitting station and receiving station
(b) A transmitting station and many receiving stations
(c) Many transmitting station and many receiving stations
(d) None of the above
14. A helical antenna is used for satellite tracking because of its :
(a) Broad bandwidth
(b) Manoeuvrability
(c) Circular polarization
(d) Good front-to-back ratio
15. What was launch weight of APPLE ?
(a) = 470 kg
(b) = 570 kg
(c) = 670 kg
(d) = 1200 kg
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