Choose the correct answer 1: ______ Sub-system collect data derived from many sensors on the Sat and send it to the earth station. a) Telemetry b) thrust c) antenna d) stabilization 2: ______ GEO Sat are required to cover the entire earth
A/ Choose the correct answer
1: ______ Sub-system collect data derived from many sensors on the
Sat and send it to the earth station.
a) Telemetry b) thrust c) antenna d) stabilization
2: ______ GEO Sat are required to cover the entire earth
a) Two b) three c) four d) five
3: An Amp has a noise temperature of 580ok, the equivalent is noise
figure in dB approximately is ______ .
a) 2 dB b) 3 dB c) 4 dB d) 5 dB
4: In a practical SAT, the transponder bandwidth is about ______ .
a) 500 MHz b) 600 MHz c)700 MHz d) 800 MHz
5: ______ Sub-system keeps the Sat antenna pointing in the right
direction
a) antenna b) thrust c) stabilization d) Telemetry
6: ______ Sat, it compromises between the lower and GEO. Sat it rotates
at 8000 km to 18000 km
a) HEO b) MEO c) LEO
7: An earth station receiver antenna with radius of 15m, efficiency 68%
at operating frequency of 4.15 GHz, if the system noise temperature
is 88ok then the value of CNR in dB at the antenna approximately
is ______ .
a) 20 dB b) 30 dB c) 40 dB d) 50 dB
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