Electronics and Communication Engineering - Satellite Communication

Exercise :: Satellite Communication - Section 1

26. 

In a stop-and-wait ARQ system, the transmitting terminal

A. waits for positive or negative acknowled-gement from the receiving terminal after sending a block
B. sends another block if positive acknowledge is received through ACK character
C. resends the previous block if negative acknowledgement is received through a NAK character
D. does not wait for acknowledgement after sending a block

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

27. 

A geostationary satellite is one which

A. hangs motionless in space about 36000 km about Earth
B. travels around the Earth in 24 hours
C. remains stationary above the Earth
D. appears stationary to everybody on Earth

Answer: Option D

Explanation:

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28. 

The geostationary communication satellite APPLE is parked in the equatorial orbit at

A. 102° E longitude over Sumatra
B. 90° E longitude over Bangladesh
C. 74° E longitude over India
D. 67° E longitude over Pakistan

Answer: Option A

Explanation:

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29. 

Power received from Sun per m2 surface area of a geosynchronous satellite in nearly __________ watt.

A. 100
B. 500
C. 2000
D. 1000

Answer: Option D

Explanation:

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30. 

A certain sound has 10000 times more energy than another sound. The number of times it would sound stronger to a listener is

A. 40
B. 10000
C. 100
D. 10

Answer: Option A

Explanation:

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