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Electronics and Communication Engineering - Satellite Communication

Exercise : Satellite Communication - Section 2
16.
Mark out the WRONG statement.
As compared to FDMA, the demand assignment system TDMA
Needs very high-speed burst modems
Faces no problems caused by intermodulation of carriers so that transponder can be used at its full power
Needs high-speed manipulation of bit streams
Is less flexible so that channels of widely different capacities cannot used and intermixed
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
APPLE was into orbit on 19 th June 1981 by European Space Agency (ESA) from
Cape Canaveral in Florida
Kourou in French Guyana
Canarvon in Western Australia
Bangalore in South India
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
A telephone user while talking to a person via a satellite has to wait for reply for about __________ millisecond.
100
270
470
540
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Space communication links are being increasingly moved into Ka-band (200-30 GHz) because it
offers a much wider available bandwidth
does not suffer from atmospheric at tenuation
permits the use of smaller antenna
does not suffer from rain attenuation
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
Which of the following statement regarding link loss for a satellite is wrong?
For fixed antenna, it is inversely proportional to f2
For fixed frequency, it is inversely proportional to the product of the antenna aperture areas
For a given satellite operating at a given frequency, it is inversely proportional to
Loss in down-link is negligible as compared to that in uplink
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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