Online Questions and Answers Topic Outline
- MCQs in Satellite System
- MCQs in Types of Satellite
- MCQs in Satellite Orbit
- MCQs in Uplink considerations
- MCQs in Demand Assignments Multiple Access
- MCQs in Antenna Tracking
- MCQs in Satellite Link Budgets
- MCQs in Satellite Path Loss
- MCQs in Satellite Figure of Merit
- MCQs in Ratio of Carrier to thermal Noise Power
- MCQs in Station Margin
- MCQs in VSAT
MCQs in Satellite Communications Series
Following is the list of multiple choice questions in this brand new series:
Continue Practice Exam Test Questions Part IV of the Series
151. A common up-converter and down-converter IF in satellite communications is
- A. 36 MHz
- B. 40 MHz
- C. 70 MHz
- D. 500 MHz
152. It is the angle between the earth’s equatorial plane and the orbital plane of the satellite measured counterclockwise.
- A. Angle of elevation
- B. Angle of azimuth
- C. Angle of inclination
- D. Angle of tetrahedron
153. Which of the following types of HPA is not used in earth stations?
- A. TWT
- B. Klystron
- C. Transistors
- D. Magnetron
154. Galileo satellite’s mass is ____.
- A. 880 kg
- B. 675 kg
- C. 900 kg
- D. 540 kg
155. The point where a polar or inclined orbit crosses the equatorial plane traveling from north to south
- A. Ascending node
- B. Line of nodes
- C. Descending node
- D. Diagonal nodes
156. The receive GCE system in an earth station performs what function/s
- A. Modulation and multiplexing
- B. Up conversion
- C. Demodulation and demultiplexing
- D. Down conversion
157. The term generally associated with the table showing the position of a heavenly body on the number of dates in a regular sequence.
- A. Astronomical almanac
- B. Smith
- C. Ephemeris
- D. Space reporting
158. The point where a polar or inclined orbit crosses the equatorial plane traveling from south to north.
- A. Ascending node
- B. Descending node
- C. Diagonal node
- D. Inclined node
159. The line joining the ascending and descending node is called ____.
- A. Line of apsides
- B. Line of nodes
- C. Line of shoot
- D. Any of these
160. When the satellite rotates in an orbit directly above the equator, usually in circular pattern. This type of orbit is called ____.
- A. Polar orbit
- B. Synchronous orbit
- C. Geosynchronous satellite
- D. Equatorial orbit
161. The Navstar GPS satellite system was declared fully operational as of ____.
- A. April 17, 1995
- B. April 24, 1995
- C. April 27, 1995
- D. April 10, 1995
162. The HPAs in most satellites are
- A. TWTs
- B. Vacuum tubes
- C. Klystrons
- D. Magnetrons
163. The physical location of a satellite is determined by its
- A. Distance from the earth
- B. Latitude and longitude
- C. Reference to the stars
- D. Position relative to the sun
164. When the satellite rotates in a path that takes it over the north and south poles in an orbit perpendicular to the equatorial plane. This type of orbit is called ____.
- A. Inclined orbit
- B. Polar orbit
- C. Geosynchronous orbit
- D. Diagonal orbit
165. The azimuth angles and the angle of elevation is collectively known as ____.
- A. Antennas look angles
- B. Antennas see angles
- C. Antennas keep angles
- D. Antennas satellite angles
166. The point on the surface of the Earth directly below the satellite.
- A. Satellite point
- B. Latitude
- C. Longitude
- D. Subsatellite point
167. It is the vertical angle formed between the direction of travel of an electromagnetic wave radiated from an earth station antenna pointing directly toward a satellite and the horizontal plane.
- A. Angle of depression
- B. Angle of inclination
- C. Angle of elevation
- D. Angle of azimuth
168. The unique number used to encrypt the signal from that of the GPS satellite.
- A. SV
- B. UV
- C. PRN
- D. ESN
169. The minimum acceptable angle of elevation
- A. 6 degrees
- B. 4 degrees
- C. 5 degrees
- D. 7 degrees
170. It is the horizontal angular distance from a reference direction either the southern or northern most point of the horizon.
- A. Angle of elevation
- B. Latitude
- C. Longitude
- D. Azimuth
171. It is defined as the horizontal pointing angle of an earth station antenna.
- A. Angle of inclination
- B. Azimuth angle
- C. Latitude
- D. Longitude
172. Determines the farthest satellite away that can be seen looking east or west of the earth station’s longitude
- A. Radio horizon
- B. Optical horizon
- C. Terrestrial limits
- D. Limits of visibility
173. The spatial separation of a satellite is between ____.
- A. 3 to 6 degrees
- B. 1 to 2 degrees
- C. 5 to 8 degrees
- D. 8 to 16 degrees
174. The geographical representation of a satellite antenna’s radiation pattern is called a ____.
- A. Field intensity
- B. Footprint
- C. Radiation propagation
- D. Polarization
175. The GPS satellite identification which is assigned according to the order of the vehicle’s launch.
- A. SV
- B. EV
- C. PRN
- D. ESN
176. The smallest beam of a satellite that concentrates their power to very small geographical areas.
- A. Hemispherical beam
- B. Global beam
- C. Spot beam
- D. Any of these
177. Satellite’s radiation pattern that typically target up to 20% of the Earth’s surface.
- A. Hemispherical beam
- B. Global beam
- C. Spot beam
- D. Any of these
178. The key electronic component in a communications satellite is the
- A. Telemetry
- B. Command and Control system
- C. On-board computer
- D. Transponder
179. The radiation pattern that has a satellite’s antenna beamwidth of 17 degrees and are capable of covering approximately 42% of the earth’s surface.
- A. Hemispherical beam
- B. Earth beam
- C. Spot beam
- D. Any of these
180. The first active satellite
- A. Moon
- B. Sputnik I
- C. Score
- D. Echo
181. Sputnik I transmitted telemetry information for
- A. 1 week
- B. 21 days
- C. 15 days
- D. 30 days
182. The US counterpart of Sputnik I
- A. Syncom
- B. Telstar
- C. Echo
- D. Explorer I
183. Explorer I lasted for ____.
- A. 5 months
- B. 6 months
- C. 12 months
- D. 2 months
184. Navstar GPS satellite grouping that can operate continuously for 180 days between uploads from the ground.
- A. Block III
- B. Block IIa
- C. Block II
- D. Block IIR
185. It was the first artificial satellite used for relaying terrestrial communications
- A. Score
- B. Explorer I
- C. Sputnik I
- D. Syncom I
186. Which of the following satellite rebroadcast President Eisenhower’s 1958 Christmas message?
- A. Telstar I
- B. Telstar II
- C. Echo
- D. Score
187. The satellite or space segment of Navstar GPS is consist of ____ operational satellites.
- A. 30
- B. 24
- C. 14
- D. 20
188. It was the first satellite to accomplish transatlantic transmission.
- A. Courier
- B. Echo
- C. Telstar
- D. Syncom
189. It is the first transponder-type satellite
- A. Telstar I
- B. Sputnik I
- C. Syncom
- D. Courier
190. The first active satellite to simultaneously receive and transmit radio signals.
- A. Telstar I
- B. Telstar II
- C. Intelsat
- D. Syncom
191. The satellite communications channel in a transponder are defined by the
- A. LNA
- B. Bandpass filter
- C. Mixer
- D. Input signals
192. The satellite that was damaged by radiation from a newly discovered Van Allen Belts and consequently lasted for two weeks.
- A. Telstar I
- B. Telstar II
- C. Intelsat
- D. Syncom
193. 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
194. The satellite that was lost in space in its first attempt to place it in a geosynchronous orbit.
- A. Syncom I
- B. Telstar I
- C. Telstar II
- D. Courier
195. Intelsat I which was the first commercial telecommunications satellite is called ____.
- A. Domsat
- B. Molniya
- C. Early bird
- D. Courier
196. Block II Navstar GPS satellites can operate for approximately ____ between the receiving updates and corrections from the control segment of the system.
- A. 5.5 days
- B. 3.5 days
- C. 6 days
- D. 7 days
197. The angle of inclination of a satellite in polar orbit is nearly ____.
- A. 45 degrees
- B. 90 degrees
- C. 30 degrees
- D. 60 degrees
198. It is the time it takes earth to rotate back to the same constellation
- A. Revolution
- B. Rotation
- C. Sidereal period
- D. Year
199. Satellites with orbital pattern like Molniya are sometimes classified as
- A. LEO
- B. MEO
- C. GEO
- D. HEO
200. The process of maneuvering a satellite within a preassigned window is called
- A. Satellite keeping
- B. Station controlling
- C. Station keeping
- D. Satellite controlling
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