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Electronics and Communication Engineering - Satellite Communication

Exercise : Satellite Communication - Section 2
36.
A typical error rate on satellite circuits is one bit error in
107
103
102
1010
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
Geosynchronous communication satellites travel around the earth in circular orbits with a forward speed of about __________ km/h.
11200
0
36000
22800
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
In satellite communication, highly directional antennas are used to
direct the spot beam to a particular region of space on Earth
strengthen the beam to overcome the cosmic noise
make corrections in change of polarisation of the beam
select a particular channel in transmission and reception
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
The average noise temperature of Earth, as viewed from space, is __________ °K.
254
303
100
500
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
Low-orbit satellites are not used for communications because they
produce sonic booms
do not provide 24 hour/ day contact to the users on Earth
heat up and melt
none
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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