Electronics and Communication Engineering - Satellite Communication

Exercise :: Satellite Communication - Section 1

21. 

The quality of a space-link is measured in terms of the __________ ratio.

A. C/N
B. S/N
C. G/T
D. EIRP

Answer: Option A

Explanation:

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22. 

The useful operational life of INSAT-IB (launched in 1983) is expected to end by

A. 1992-93
B. 1991-92
C. 1989-90
D. 1993-94

Answer: Option C

Explanation:

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23. 

At present, the radio-frequency band mainly used by most satellites is

A. EHF
B. UHF
C. VHF
D. SHF

Answer: Option D

Explanation:

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24. 

Orbital disturbances of a geosynchronous satellite are caused by the

A. moon
B. sun
C. earth
D. all of the above

Answer: Option D

Explanation:

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25. 

Which one of the following statement is correct?

A. Satellite spacing is not affected by the bandwidth of the transmitting earth station
B. Beamwidth is independent of antenna size and frequency band used
C. The width of a beam in space is inversely proportional to the width of the transmitting antenna
D. Use of high-frequency bands permits less number of satellites to share the orbit

Answer: Option C

Explanation:

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