This is the Multiples Choice Questions Part 1 of the Series in Satellite Communications as one of the Communications Engineering topic. In Preparation for the ECE Board Exam make sure to expose yourself and familiarize in each and every questions compiled here taken from various sources including but not limited to past Board Examination Questions in Electronic System and Technologies, Communications Books, Journals and other Communications References.
MCQ Topic Outline included in ECE Board Exam Syllabi
- MCQ in Satellite System
- MCQ in Types of Satellite
- MCQ in Satellite Orbit
- MCQ in Uplink considerations
- MCQ in Demand Assignments Multiple Access
- MCQ in Antenna Tracking
- MCQ in Satellite Link Budgets
- MCQ in Satellite Path Loss
- MCQ in Satellite Figure of Merit
- MCQ in Ratio of Carrier to thermal Noise Power
- MCQ in Station Margin
- MCQ in VSAT
Start Practice Exam Test Questions Part 1 of the Series
Choose the letter of the best answer in each questions.
1. Which of the following is the first active satellite?
A. Echo I
B. Telstar I
C. Early Bird
D. Sputnik I
Answer: Option D
Solution:
2. Which of the following is the first commercial satellite?
A. Early Bird
B. Telstar
C. Explorer
D. Courier
Answer: Option B
Solution:
3. What is the first passive satellite transponder?
A. Sun
B. Early Bird
C. Score
D. Moon
Answer: Option B
Solution:
4. The first satellite to receive and transmit simultaneously
A. Intelsat I
B. Agila I
C. Syncorn I
D. Telstar I
Answer: Option D
Solution:
5. A helical antenna is used for satellite tracking because of
A. circular polarization
B. maneuverability
C. beamwidth
D. gain
Answer: Option A
Solution:
6. Repeaters inside communications satellites are known as
A. Trancievers
B. Transponders
C. Transducers
D. TWT
Answer: Option B
Solution:
7. Considered as the unsolved problem in satellite system
A. Coverage
B. Cost
C. Access
D. Privacy
Answer: Option D
Solution:
8. ___________ is a satellite that rotates around the earth in a low-altitude elliptical or circular pattern.
A. Geosynchronous satellite
B. Nonsynchronous satellite
C. Prograde satellite
D. Retrograde satellite
Answer: Option B
Solution:
9. Is the geographical representation of a satellite antenna radiation pattern
A. Footprint
B. Spot
C. Earth
D. Region
Answer: Option A
Solution:
10. The smallest beam of a satellite antenna radiation pattern
A. Zone beam
B. Hemispheric beam
C. Spot beam
D. Global beam
Answer: Option C
Solution:
11. A satellite beam that covers almost 42.4% of the earths surface.
A. Zone beam
B. Hemispheric beam
C. Spot beam
D. Global beam
Answer: Option D
Solution:
12. What is the frequency range of C-band?
A. 8.5 to 12.5 GHz
B. 3.4 to 6.425 GHz
C. 12.95 to 14.95 GHz
D. 27.5 to 31 GHz
Answer: Option B
Solution:
13. A satellite signal transmitted from a satellite transponder to earthโs station.
A. Uplink
B. Downlink
C. Terrestrial
D. Earthbound
Answer: Option B
Solution:
14. Collects very weak signals from a broadcast satellite
A. Helical antenna
B. Satellite dish
C. LNA
D. TWT
Answer: Option B
Solution:
15. What is a device that detects both vertically and horizontally polarized signals simultaneously?
A. Orthomode transducer
B. Crystal detector
C. Optoisolator
D. Isomode detector
Answer: Option A
Solution:
16. _________ detects the satellite signal relayed from the feed and converts it to an electric current, amplifies and lower its frequency.
A. Horn antenna
B. LNA
C. Satellite receiver
D. Satellite dish
Answer: Option B
Solution:
17. Is a loss of power of a satellite downlink signal due to earthโs atmosphere.
A. Atmospheric loss
B. Path loss
C. Radiation loss
D. RFI
Answer: Option B
Solution:
18. What height must a satellite be placed above the surface of the earth in order for its rotation to be equal to earthโs rotation?
A. 26,426.4 miles
B. 27,426.4 miles
C. 23,426.4 miles
D. 22,426.4 miles
Answer: Option D
Solution:
19. Point on the satellite obits closest to the earth.
A. Apogee
B. Perigee
C. Prograde
D. Zenith
Answer: Option B
Solution:
20. The earth area covered by a satellite radio beam.
A. Beamwidth
B. Bandwidth
C. Footprint
D. Zone
Answer: Option C
Solution:
21. What is the local oscillator (mixer) frequency of the satellite with an uplink frequency in GHz band?
A. 3500 MHz
B. 4500 MHz
C. 2225 MHz
D. 2555 MHz
Answer: Option C
Solution:
22. What kind of battery panels are used in some advance satellites
A. Germanium based panels
B. Silicon based panel
C. Galium Phosphate solar panel array
D. Galium Arsenide solar panel array
Answer: Option D
Solution:
23. Satellite engine uses
A. jet propulsion
B. ion propulsion system
C. liquid fuel
D. solar jet
Answer: Option B
Solution:
24. A satellite batter has more power but lighter.
A. Lithium
B. Leclanche
C. Hydrogen
D. Magnesium
Answer: Option A
Solution:
25. What kind of battery used by older satellites?
A. Lithium
B. Leclanche
C. Hydrogen
D. Magnesium
Answer: Option C
Solution:
26. VSAT was made available in
A. 1979
B. 1981
C. 1983
D. 1977
Answer: Option A
Solution:
27. What band does VSAT first operate?
A. L-band
B. X-band
C. C-band
D. Ku-band
Answer: Option C
Solution:
28. The first Philippine Mabuhay satellite has how many channels?
A. 30
B. 24
C. 48
D. 50
Answer: Option A
Solution:
29. The first Philippine Agila I will have how many transponders.
A. 36
B. 48
C. 24
D. 12
Answer: Option A
Solution:
30. How may satellite orbital slots are requested by the Philippine Government from ITU?
A. 2
B. 4
C. 6
D. 8
Answer: Option C
Solution:
31. The location of AsiaSat I.
A. 105.5ห East
B. 151.5ห East
C. 115.5ห East
D. 170.5ห East
Answer: Option A
Solution:
32. AsiaSat I covers how many countries in Asia?
A. 38
B. 10
C. 28
D. 15
Answer: Option A
Solution:
33. The owner of AsiaSat 2 is
A. Asia Satellite Telecommunications Company (ASTC)
B. Japan Satellite System (JSAT)
C. China Great Wall Industry Corporation
D. Singapore Satellite Commission
Answer: Option C
Solution:
34. What is the approximate path loss from satellite-to-earth station?
A. 100 dB
B. 150 dB
C. 175 dB
D. 200 dB
Answer: Option D
Solution:
35. INTELSAT stands for
A. Intel Satellite
B. International Telephone Satellite
C. International Telecommunications Satellite
D. International Satellite
Answer: Option C
Solution:
36. The frequency of Ku band for satellite communications.
A. 6/4 GHz
B. 14/11 GHz
C. 12/14 GHz
D. 4/8 GHz
Answer: Option B
Solution:
37. A satellite cross-link means
A. Earth-to-satellite link
B. Satellite-to-earth link
C. Satellite-to-satellite link
D. None of these
Answer: Option C
Solution:
38. Earth station uses what type of antenna
A. Despun antenna
B. Helical antenna
C. Toroidal antenna
D. Cassegrain antenna
Answer: Option D
Solution:
39. What is the delay time for satellite transmission from earth transmitter to earth receiver?
A. 0.5 s
B. 1.0 s
C. 5 ms
D. 0.25 ms
Answer: Option A
Solution:
40. The bandwidth of C-band satellite frequency band in U.S.
A. 500 GHz
B. 1000 GHz
C. 1000 MHz
D. 500 MHz
Answer: Option D
Solution:
41. The most common device used as an LNA is
A. zener diode
B. tunnel diode
C. IMPATT
D. Shockley diode
Answer: Option B
Solution:
42. The radiation patterns of earth coverage antennas have a beamwidth of approximately
A. 21ห
B. 5ห
C. 17ห
D. 35ห
Answer: Option C
Solution:
43. A mobile satellite array has usually how many elements?
A. 6
B. 88
C. 12
D. 14
Answer: Option D
Solution:
44. 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: Option B
Solution:
45. 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: Option A
Solution:
46. Most mobile satellite array uses ___________ in transforming 50 to 150 โฆ impedance.
A. stub
B. balun
C. quarter-wavelength transformer
D. microstrip tapers.
Answer: Option C
Solution:
47. The switching from one element to the other element in a typical mobile satellite array.
A. Series
B. Radial
C. Matrix
D. Shunt
Answer: Option D
Solution:
48. 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: Option D
Solution:
49. 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: Option A
Solution:
50. 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: Option A
Solution:
Questions and Answers in Satellite Communications Series
Following is the list of multiple choice questions in this brand new series:
Complete List of MCQ in Communications Engineering per topic
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