5. A communication satellite is a repeater between a. A transmitting station and receiving station b. Many transmitting stations and many receiving photo of fascination cruise ship stations c. A transmitting station and many receiving stations d. Many transmitting stations photo of fascination cruise ship and a receiving station
10. A transponder is a satellite equipment photo of fascination cruise ship which a. Receives a signal from earth station and amplifies it b. Changes the frequency of the received signal c. Retransmit the received signal d. All of the above
13. The expression for satellite link frequencies such as 14/12 GHz denotes photo of fascination cruise ship that a. 12 GHz is the uplink frequency and 14 GHz is the downlink frequency b. the system is operating at a mean frequency of 13 Ghz c. 14 GHz is the uplink frequency and 12 GHz is the downlink frequency d. the 14 GHz frequency is backup for 12 GHz frequency or vice versa
16. The required antenna size __________ as the operating frequency of a system increases, assuming that antenna gain remains unchanged. a. Remains the same b. Increases c. Decreases d. All of the above
21. A geostationary photo of fascination cruise ship satellite is one which a. Hangs motionless in space about 36,000 km above the earth b. Travels around the earth about 24 hrs. c. Remains stationary above the earth d. Appears stationary above the earth
23. The period of the satellite is a. The amount of time it takes for a satellite to complete one orbit b. The point on an orbit where satellite to complete one orbit c. The time it takes the satellite to travel from perigee to apogee d. An orbital arc that extends from 60 degrees west longitude to 145 degrees west longitude
30. The different multiple accesses which permit many satellite users to operate in parallel through a. A Single photo of fascination cruise ship Transponder Without Interfering With Each other are b. FDMA c. TDMA d. CDMA e. All of the above
31. A digital technology that uses a low power signal spread across a wide bandwidth. With this technology, a phone call is assigned a code instead of a certain frequency. Using identifying code and a low power signal, a large number photo of fascination cruise ship of channels can used the entire bandwith a. TDMA b. PCDMA c. PMA d. CDMA 32. The use of the same frequency on the same geographical area a. Frequency reuse b. Roaming c. Homing d. Cellular
43. An earth station transmits signal to a satellite 38,500 km, directly overhead it. What is the propagation delay when the signal is received back at the same earth station, photo of fascination cruise ship in milliseconds? a. 257 b. 200 c. 285 d. 185
44. A satellite photo of fascination cruise ship communication link between Pinugay Earth Station, Philippines and Mt. Fucino photo of fascination cruise ship Earth Station, Italy is to be established. If the assigned uplink frequency at Pinugay Earth Station photo of fascination cruise ship is 6175 MHz, what is the downlink frequency at Mt. Fucino Earth Station, in MHz? a. 4545 b. 3950 c. 3789 d. 4200
50. The satellite frequency reuse method which sends different information signals using vertical photo of fascination cruise ship or horizontal electromagnetic polarization a. Multiple coverage areas b. Dual polarization photo of fascination cruise ship c. Spatial separation d. Spread spectrum
photo of fascination cruise ship 51. __________ detects the satellite signal relayed from the feed and converts it to an electric current, amplifies and lower its frequency. a. Feedhorn b. Satellite dish c. Satellite receiver d. LNA
53. What is the basic function of a communications satellite? a. To act as a receiving antenna for broadcast FM b. To compensate for the antenna limitations c. To eliminate aerodynamic photo of fascination cruise ship drag d. To act as a receiving antenna for broadcast AM
55. A satellite beam that covers almost 42.5% of the earth's surface. photo of fascination cruise ship a. Zone beam b. Hemispheric beam c. Spot beam d. Global beam 56. The first Philippine satellite has how many channels? a. 30 b. 24 c. 48 d. 50
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