Satellite Communication - Study Mode
[#121] A radar system uses magnetron as high power RF source. Its transmitter emits 300 kW RF power at 10% duty factor. If the efficiency of radar transmitter during pulse is 60% and the power required during pulse off period is 1 kW. The average power dissipation in radar is-
Correct Answer
(C) 20.9 kW
[#122] Match List-I with List-II and select the correct answer as per the options: List-I List-II a. To ensure all bursts arrive the satellite in their correct time slots 1. Loop back b. Initial portion of a traffic burst that carries information similar to that carried in the reference burst 2. Network synchronization c. In refers to the fact that an earth station receives its own transmission, from which it can determine range 3. Burst code word d. It is used to establish burst timing in TDMA 4. Preamble
Correct Answer
(C) a-2, b-4, c-1, d-3
[#123] The basic rate of SONET is
Correct Answer
(B) 51.84 Mbps
[#124] Random satellite moves in
Correct Answer
(B) polar orbits
[#125] Collects very weak signals from a broadcast satellite
Correct Answer
(B) Satellite dish