6. The waiting time for telephonic conversation via communication satellite is of the order of :
(a) 960 ms
(b) 680 ms
(c) 540 ms
(d) 330 ms
7. A satellite earth station has :
(a) Only transmitting equipment
(b) Only receiving equipment
(c) Both transmitting as well as receiving equipment
(d) None of the above
8. For a tracking satellite in low orbit normally the antenna used is :
(a) Dicone
(b) Cassegrain feed antenna
(c) Circularly polarized helical antenna
(d) Any of the above
9. Satellite tracking stations are located in remote areas in order to minimise the effect of :
(a) Cosmic noise
(b) Thermal noise
(c) Solar noise
(d) Man-made noise
10. Before transmitting to the satellite, the wideband satellite signal is amplified by :
(a) Wave guide
(b) Klystron
(c) Travelling wave tube
(d) Any of the above
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