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Satellite Communication General Knowledge Quiz | Satellite Communication General Knowledge Short Questions & Answers

Questions
41 As the height of a satellite orbit gets lower, the speed of the satellite _________.
A increases
B decreases
C remains the same
D None of the above

Answer: increases
42 What is the delay time for satellite transmissions from earth transmitter to earth receiver?
A 0.5 s
B 1s
C 5 ms
D 0.25 s

Answer: 0.5 s
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43 A method of multiple accessing where a given RF channel bandwidth is divided inot smaller frequency band.
A CDMA
B ANIK-D
C TDMA
D FDMA

Answer: FDMA
44 The switching from one element to the other element in a typical mobile satellite array.
A Series
B Radial
C Matrix
D Shunt

Answer: Shunt
45 Most mobile satellite array uses ___________ in transforming 50 to 150 Ω impedance.
A stub
B balun
C quarter-wavelength transformer
D microstrip tapers

Answer: quarter-wavelength transformer
46 What circuit is responsible in activating and deactivating adjacent antenna elements in a mobile satellite array?
A Radial divider
B Divider/combiner
C Radial combiner
D Radial multiplexer

Answer: Radial divider
47 In a typical mobile satellite array antenna if three elements are activated, how many elements are deactivated?
A 3
B 11
C 5
D 9

Answer: 11
48 A mobile satellite array has usually how many elements?
A 6
B 88
C 12
D 14

Answer: 14
49 The most common device used as an LNA is
A zener diode
B tunnel diode
C IMPATT
D Shockley diode

Answer: tunnel diode

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