Electronics and Communication Engineering - Satellite Communication

Exercise :: Satellite Communication - Section 1

31. 

While keeping the down-link frequency constant, the diameter of a satellite antenna is reduced by half. To offer the same EIRP over the increased coverage area, the RF output power has to be increases by a factor of

A. 2
B. 4
C. 8
D. 16

Answer: Option B

Explanation:

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32. 

A communication satellite is a repeater between

A. a transmitting station and a receiving station
B. a transmitting station and many receiving station
C. many transmitting station and many receiving station
D. none

Answer: Option C

Explanation:

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33. 

The ending part of the popular teleserial Mahabharat will be beamed to the viewers

A. WESTAT
B. INSAT-IC
C. ARABSAT
D. INSAT-ID

Answer: Option C

Explanation:

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34. 

The most effective anti jamming technique is

A. frequency hopping
B. spread-spectrum modulation
C. key leverage
D. once-only key

Answer: Option B

Explanation:

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35. 

For satellite communication, standard Earth stations have antenna diameters in the range of __________ metre.

A. 27.5 to 30
B. 10 to 15
C. 30 to 50
D. 5 to 10

Answer: Option A

Explanation:

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