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RRB JE EC: Communication System Quiz 3
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Question 1
Which one of the following is correct
In satellite communication links, generally
In satellite communication links, generally
Question 2
What was the first commercial geostationary communication satellite?
Question 3
In a typical satellite communication system, which of the following could be the up-link and down-link frequencies respectively?
Question 4
Assertion (A): It is not necessary to incorporate a very low noise amplifier in a communication satellite.
Reason (R): The noise temperature of the satellite antenna is usually high, since the beam is covered by the earth.
Reason (R): The noise temperature of the satellite antenna is usually high, since the beam is covered by the earth.
Question 5
For communication from satellite to the earth station, microwave frequencies are used because
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Aug 1ESE & GATE EC
