MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 50 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A mobile satellite array has usually how many elements?%! |
| A. | 6 |
| B. | 88 |
| C. | 12 |
| D. | 14 |
| Answer» E. | |
| 2. |
AsiaSat I covers how many countries in Asia?%! |
| A. | 38 |
| B. | 10 |
| C. | 28 |
| D. | 15 |
| Answer» B. 10 | |
| 3. |
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 Commision |
| Answer» D. Singapore Satellite Commision | |
| 4. |
Earth station uses what type of antenna%! |
| A. | Despun antenna |
| B. | Helical antenna |
| C. | Toroidal antenna |
| D. | Cassegrain antenna |
| Answer» E. | |
| 5. |
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» E. | |
| 6. |
*$_A satellite beam that covers almost 42.4% of the earths surface.? |
| A. | Zone beam |
| B. | Hemispheric beam |
| C. | Spot beam |
| D. | Global beam |
| Answer» E. | |
| 7. |
*/*_The first Philippine Mabuhay satellite has how many channels?? |
| A. | 30 |
| B. | 24 |
| C. | 48 |
| D. | 50 |
| Answer» B. 24 | |
| 8. |
*/*_The first Philippine Agila I will have how many transponders.? |
| A. | 36 |
| B. | 48 |
| C. | 24 |
| D. | 12 |
| Answer» B. 48 | |
| 9. |
*/*__________ detects the satellite signal relayed from the feed and converts it to an electric current, amplifies and lower its frequency.? |
| A. | Horn antenna |
| B. | LNA |
| C. | Satellite receiver |
| D. | Satellite dish |
| Answer» C. Satellite receiver | |
| 10. |
*/*_The first satellite to receive and transmit simultaneously? |
| A. | Intelsat I |
| B. | Agila I |
| C. | Syncorn I |
| D. | Telstar I |
| Answer» E. | |
| 11. |
*/*_The bandwidth of C-band satellite frequency band in U.S.? |
| A. | 500 GHz |
| B. | 1000 GHz |
| C. | 1000 MHz |
| D. | 500 MHz |
| Answer» E. | |
| 12. |
*/*_INTELSAT stands for? |
| A. | Intel Satellite |
| B. | International Telephone Satellite |
| C. | International Telecommunications Satellite |
| D. | International Satellite |
| Answer» D. International Satellite | |
| 13. |
*/*_VSAT was made available in? |
| A. | 1979 |
| B. | 1981 |
| C. | 1983 |
| D. | 1977 |
| Answer» B. 1981 | |
| 14. |
%_As the height of a satellite orbit gets lower, the speed of the satellite ___________._% |
| A. | Increases |
| B. | Decreases |
| C. | Remains the same |
| D. | None of the above |
| Answer» B. Decreases | |
| 15. |
_ What is the delay time for satellite transmission from earth transmitter to earth receiver?$? |
| A. | 0.5 s |
| B. | 1.0 s |
| C. | 5 ms |
| D. | 0.25 ms |
| Answer» B. 1.0 s | |
| 16. |
_ What height must a satellite be placed above the surface of the earth in order for its rotation to be equal to earth’s rotation?$? |
| A. | 26,426.4 miles |
| B. | 27,426.4 miles |
| C. | 23,426.4 miles |
| D. | 22,426.4 miles |
| Answer» E. | |
| 17. |
_ Point on the satellite obits closest to the earth.$? |
| A. | Apogee |
| B. | Perigee |
| C. | Prograde |
| D. | Zenith |
| Answer» C. Prograde | |
| 18. |
_ What is the frequency range of C-band?$? |
| A. | 8.5 to 12.5 GHz |
| B. | 3.4 to 6.425 GHz |
| C. | 12.95 to 14.95 GHz |
| D. | 27.5 to 31 GHz |
| Answer» C. 12.95 to 14.95 GHz | |
| 19. |
_ Repeaters inside communications satellites are known as$? |
| A. | Trancievers |
| B. | Transponders |
| C. | Transducers |
| D. | TWT |
| Answer» C. Transducers | |
| 20. |
_ What circuit is responsible in activating and deactivating adjacent antenna elements in a mobile satellite array?$? |
| A. | Radial divider |
| B. | Divider/combiner |
| C. | Radial combiner |
| D. | Radial multiplexer |
| Answer» B. Divider/combiner | |
| 21. |
_ The location of AsiaSat I.$? |
| A. | 105.5Àö East |
| B. | 151.5Àö East |
| C. | 115.5Àö East |
| D. | 170.5Àö East |
| Answer» B. 151.5√Ä√∂ East | |
| 22. |
_ What band does VSAT first operate?$? |
| A. | L-band |
| B. | X-band |
| C. | C-band |
| D. | Ku-band |
| Answer» D. Ku-band | |
| 23. |
__Considered as the unsolved problem in satellite system__ |
| A. | Coverage |
| B. | Cost |
| C. | Access |
| D. | Privacy |
| Answer» E. | |
| 24. |
___________ is a satellite that rotates around the earth in a low-altitude elliptical or circular pattern.$? |
| A. | Geosynchronous satellite |
| B. | Nonsynchronous satellite |
| C. | Prograde satellite |
| D. | Retrograde satellite |
| Answer» C. Prograde satellite | |
| 25. |
What is the approximate path loss from satellite-to-earth station?$? |
| A. | 100 dB |
| B. | 150 dB |
| C. | 175 dB |
| D. | 200 dB |
| Answer» E. | |
| 26. |
A method of multiple accessing where a given RF channel bandwidth is divided inot smaller frequency band.$? |
| A. | CDMA |
| B. | ANIK-D |
| C. | TDMA |
| D. | FDMA |
| Answer» E. | |
| 27. |
What is a device that detects both vertically and horizontally polarized signals simultaneously?$? |
| A. | Orthomode transducer |
| B. | Crystal detector |
| C. | Optoisolator |
| D. | Isomode detector |
| Answer» B. Crystal detector | |
| 28. |
A satellite batter has more power but lighter.$? |
| A. | Lithium |
| B. | Leclanche |
| C. | Hydrogen |
| D. | Magnesium |
| Answer» B. Leclanche | |
| 29. |
The switching from one element to the other element in a typical mobile satellite array.$? |
| A. | Series |
| B. | Radial |
| C. | Matrix |
| D. | Shunt |
| Answer» E. | |
| 30. |
What kind of battery used by older satellites?$? |
| A. | Lithium |
| B. | Leclanche |
| C. | Hydrogen |
| D. | Magnesium |
| Answer» D. Magnesium | |
| 31. |
A helical antenna is used for satellite tracking because of$? |
| A. | Circular polarization |
| B. | Maneuverability |
| C. | Beamwidth |
| D. | Gain |
| Answer» B. Maneuverability | |
| 32. |
Is a loss of power of a satellite downlink signal due to earth’s atmosphere.$? |
| A. | Atmospheric loss |
| B. | Path loss |
| C. | Radiation loss |
| D. | RFI |
| Answer» C. Radiation loss | |
| 33. |
Is a loss of power of a satellite downlink signal due to earth’s atmosphere.? |
| A. | Atmospheric loss |
| B. | Path loss |
| C. | Radiation loss |
| D. | RFI |
| Answer» C. Radiation loss | |
| 34. |
Which of the following is the first commercial satellite? |
| A. | Early Bird |
| B. | Telstar |
| C. | Explorer |
| D. | Courier |
| Answer» C. Explorer | |
| 35. |
What is the first passive satellite transponder? |
| A. | Sun |
| B. | Early Bird |
| C. | Score |
| D. | Moon |
| Answer» C. Score | |
| 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» C. 12/14 GHz | |
| 37. |
The smallest beam of a satellite antenna radiation pattern |
| A. | Zone beam |
| B. | Hemispheric beam |
| C. | Spot beam |
| D. | Global beam |
| Answer» D. Global beam | |
| 38. |
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» E. | |
| 39. |
How may satellite orbital slots are requested by the Philippine Government from ITU? |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» D. 8 | |
| 40. |
The earth area covered by a satellite radio beam. |
| A. | Beamwidth |
| B. | Bandwidth |
| C. | Footprint |
| D. | Zone |
| Answer» D. Zone | |
| 41. |
A satellite signal transmitted from a satellite transponder to earth’s station.$ |
| A. | Uplink |
| B. | Downlink |
| C. | Terrestrial |
| D. | Earthbound |
| Answer» C. Terrestrial | |
| 42. |
Collects very weak signals from a broadcast satellite |
| A. | Helical antenna |
| B. | Satellite dish |
| C. | LNA |
| D. | TWT |
| Answer» C. LNA | |
| 43. |
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» C. 5 | |
| 44. |
Which of the following is the first active satellite? |
| A. | Echo I |
| B. | Telstar I |
| C. | Early Bird |
| D. | Sputnik I |
| Answer» E. | |
| 45. |
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» D. None of these | |
| 46. |
Is the geographical representation of a satellite antenna radiation pattern |
| A. | Footprint |
| B. | Spot |
| C. | Earth |
| D. | Region |
| Answer» B. Spot | |
| 47. |
The radiation patterns of earth coverage antennas have a beamwidth of approximately |
| A. | 21Àö |
| B. | 5Àö |
| C. | 17Àö |
| D. | 35Àö |
| Answer» D. 35√Ä√∂ | |
| 48. |
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» D. 2555 MHz | |
| 49. |
Satellite engine uses |
| A. | Jet propulsion |
| B. | Ion propulsion system |
| C. | Liquid fuel |
| D. | Solar jet |
| Answer» C. Liquid fuel | |
| 50. |
Most mobile satellite array uses ___________ in transforming 50 to 150 Ω impedance.# |
| A. | Stub |
| B. | Balun |
| C. | Quarter-wavelength transformer |
| D. | Microstrip tapers |
| Answer» D. Microstrip tapers | |