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Electronics and Communication Engineering - Satellite Communication

Exercise : Satellite Communication - Section 1
36.
The Sun blots out the transmission of a geosynchronous satellite twice a year when satellite passes directly in front of it. This outage lasts for about
10 minutes on 5 consecutive days
5 minutes on 10 consecutive days
30 minutes for 5 consecutive days
one hour for 5 consecutive days
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
In satellite communication, frequency modulation is used because satellite channel has
small bandwidth and negligible noise
large bandwidth and severe noise
maximum bandwidth and minimum noise
high modulation index
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
In the case of a 70-MHz IF carrier for a transponder bandwidth of 36 MHz, energy must lie between MHz.
34 and 106
52 and 88
106 and 142
34 and 142
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
Which of the following factor does NOT contribute to the drift of a geostationary satellite from its stationary position in space?
Pressure of solar radiations
Gravitational changes due to Sun and Moon
Oblateness of the Earth
Weight of the satellite
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
In communication satellites, the up-link normally operates at a higher frequency than the down-link because it
gives a narrow beam shining into space
results in lesser signal attenuation
gives better beam-shaping
is easier to polarize a high frequency beam
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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