Satellite Communication Question & AnswersMarch 30, 2021 By WatElectronics This article lists 100 Satellite Communication MCQs for engineering students. All the Satellite Communication Questions & Answers given below include a hint and wherever possible link to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up their fundamentals on Satellite Communication topic.A satellite is an object in space that is placed between other communicating space orbits for a communication purpose between the space workstation and earth work station. This communication process between satellite and earth work station is called satellite communication. There are two types of communication satellites, they are natural satellites like the sun and moon and human-made satellites also called artificial satellite-like FalconSAT-1, AISAT-1, etc. Satellites are generally classified into several types namely communication satellite, remote sensing satellite, navigation satellite, LEO - Low earth orbit, MEO - medium earth orbit, HEO – Highly elliptical orbit, GPS, GEO, Drone Satellite, Ground Satellite, and Polar satellite.The advantages of satellite communication are it covers maximum bandwidth, provides elasticity property, and is more reliable. The disadvantages of satellite communication, are it is a cost-effective procedure, it may block frequencies depending on the medium it travels and there is a chance for signal interference. Some of the applications of satellite communication are TV, radio, mobile phones, etc. 1). Satellite communication has _________ a number of components. 1 2 3 4 HintSatellite communication has 2 components namely, the ground segment and the space segment.2). Which of the following statement is true according to a ground segment of satellite communication? It has a stationary or mobile transmission, reception It has stationary or a mobile ancillary equipment It has stationary or dependent satellites Both a and b HintA ground segment of satellite communication has stationary or mobile transmission, reception, and ancillary equipment.3). Which of the following statement is true according to the space segment of satellite communication? It has a stationary or mobile transmission, reception It has stationary or a mobile ancillary equipment It is a satellite Both a and b HintThe space segment of satellite communication is a satellite itself.4). A typical satellite link involves in _______ of a signal from an earth station to a satellite. Uplinks Downlinks Both a and b None of the above HintA typical satellite link involves in up-linking of a signal from an earth station to a satellite.5). After the up-linking process, a satellite _____ and _____ the signal. Receives, amplifies Amplifies, receives Receives, adds noise Adds noise and transmits HintAfter the up-linking process, a satellite receives and amplifies the signal.6). Does the satellite retransmits the signal to the earth station after amplifying? Yes No Depends on the climate HintYes, a satellite retransmits the signal to the earth's station after amplifying it.7). Which of the following are the satellite receivers on the earth station? DTH satellite equipment Mobile reception equipment in aircraft Satellite telephones All the above HintThe satellite receivers on earth station are DTH satellite equipment, mobile reception equipment in aircraft, satellite telephones.8). DTH in DTH satellite equipment stands for ________. Direct to home Direction to home Detection of home All the above HintDTH in DTH satellite equipment stands for direct to home.9). Which of the following is the first artificial satellite? Sputnik GSAT-17 GSAT19 IRNSS-1H HintThe first artificial satellite is Sputnik.10. Which of the following is the vehicle used to launch IRNSS-1H? PSLV C39/IRNSS1H Mission PSLV-C38/ Cartosat-2 series satellite Ariane-5 VA 238 GSLV Mk III-D1/GSAT-19 Mission HintThe vehicle used to launch IRNSS-1H is PSLV C39/IRNSS1H Mission.11). Which of the following is the vehicle used to launch -GSAT-17? PSLV C39/IRNSS1H Mission PSLV-C38/ Cartosat-2 series satellite Ariane-5 VA 238 GSLV Mk III-D1/GSAT-19 Mission HintThe vehicle used to launch -GSAT-17 is Ariane-5 VA 238.12). Which of the following is the vehicle used to launch the Cartosat-2 series satellite? PSLV C39/IRNSS1H Mission PSLV-C38/ Cartosat-2 series satellite Ariane-5 VA 238 GSLV Mk III-D1/GSAT-19 Mission HintThe vehicle used to launch the Cartosat-2 series satellite is PSLV-C38/ Cartosat-2 series satellite.13). Which of the following is the vehicle used to launch the GSAT-19 satellite? PSLV C39/IRNSS1H Mission PSLV-C38/ Cartosat-2 series satellite Ariane-5 VA 238 GSLV Mk III-D1/GSAT-19 Mission HintThe vehicle used to launch the GSAT-19 satellite is GSLV Mk III-D1/GSAT-19 Mission.14). In which year Sputnik1 artificial satellite was launched. 1957 1958 1960 1954 HintSputnik1 artificial satellite was launched in the year 1957.15). NASA stands for ______. National Auto Space Administration National Aeronautics and Space Administration Net Aeronautics and Space Administration National Aeronautics and satellite Administration HintNASA stands for National Aeronautics and Space Administration.16). Which of the following is the first 2 way communication active satellite? Telstar FalconSAT-2 FalconSAT-1 AISAT-1 HintThe first 2-way communication active satellite is Telstar.17). Which of the following are the examples of digital satellites? FalconSAT-2 FalconSAT-1 AISAT-1 All the above HintExamples of digital satellites are FalconSAT-2, FalconSAT-1, and AISAT-1.18). Which of the following is the basic classification of satellites are present? Man made satellites Natural satellite Both a and b Any of the above HintThere are, 2 types of satellites namely – man-made satellites also called artificial satellites, and natural satellites.19). Which of the following are the examples of natural satellites? Sun Moon Planets All the above HintExamples of natural satellites are the sun, moon, and planets.20). Which of the following are man made satellites? FalconSAT-1 AISAT-1 Sun Both a and b HintMan-made satellites are FalconSAT-1, AISAT-1, etc.21). Satellites are classified into ______ types. 9 10 8 12 HintSatellites are classified into 9 types namely communication satellite, remote sensing satellite, navigation satellite, LEO, MEO, HEO, GPS, GEO, Drone Satellite, Ground Satellite, and Polar satellite.22). GPS stands for _______. Global Positioning System Guide Position System Guide Posting System Global pointing System HintGPS stands for Global Positioning System.23). GEOs stands for _______. Geostationary Satellite Geo standing Satellite Global stationary Satellite None of the above HintGEOs stands for Geostationary Satellite.24). How many techniques are used for achieving multiple access? 2 3 4 5 HintThere are 3 techniques used for achieving multiple access, namely TDMA – Time-division multiplexing, FDMA – frequency division multiplexing, CDMA – Code division multiplexing.25). Which of the following statement is true regarding frequency division multiplexing? It assigns a single user with a single channel It minimizes crosstalk by using guard bands No user can share other users frequency band at a time All the above HintFrequency division multiplexing has certain properties like it assigns a single user with a single channel, minimizes crosstalk by using guard bands and no user can share another user's frequency band at a time.Satellite Communication Exam Questions & Answers26). FDD technique in multiplexing stands for _______. Frequency division duplex Frequency double division Frequency duplex division Frequency division double HintFDD technique in multiplexing stands for frequency division duplex.27). Which of the following statement is true regarding the FDD satellite technique? It uses only upward channel It uses only downward channel It uses both upward channel and downward channel None of the above HintFDD satellite technique provides users with a channel and a pair of frequencies namely both upward channel and downward channel.28). FDMA is used in ______ systems. Analog systems Digital systems Both a and b None of the above HintFDMA is used in analog systems.29). Which of the following are the examples of FDMA? AMPS NMT Radiocom All the above HintThe examples of FDMA are AMPS, NMT and Radiocom.30). Is FDMA a continuous transmission scheme. Yes No Depends on the type of communication HintYes, FDMA a continuous transmission scheme.31). Which of the following are the examples of analog systems that FDMA is implemented? AMPS NMT Radiocom 2000 All the above HintThe examples of analog systems that FDMA is implemented are AMPS – advanced mobile aphone service, NMT – Nordic mobile telephone, Radicom 2000.32). Which of the following are the advantages of FDMA? It is easy to implement It is a continuous transmission scheme Less complex scheme All the above HintThe advantages of FDMA are - it is easy to implement, it is a continuous transmission scheme and less complex scheme.33). Which of the following are the disadvantages of FDMA? FDMA higher cell site It uses duplexers It requires tight RF filtering All the above HintThe disadvantages of FDMA are it has a higher cell site, it uses duplexers and it requires tight RF filtering.34). TWT stands for _______. Travelling wave tube Transport wave tube Travel waveguide tube None of the above HintTWT stands for Travelling wave tube.35). Which of the following statement is true for satellite communication? It is a method to transport information from one place to another place via satellite It is a method to transmit waves It is a method to measure information between satellites None of the above HintSatellite communication is a method to transport information from one place to another place via satellite.36). A communication satellite is a _______ satellite. Artificial satellite Natural satellite Man made satellite Either a or c HintA communication satellite is an artificial satellite.37). A communication satellite uses ______ to transmit signal. Antenna Transponder Oscillator None of the above HintA communication satellite uses a transponder to transmit a signal.38). Which of the following are the components in satellite communication? Mixer Transponder Filter All the above HintThe components in satellite communication are mixer, transponder, filter, amplifier, local oscillator, amplifier, multiplexers.39). What is the maximum distance covered by satellite communication? 1300 km 1500 km 1800 km 1100 km HintThe maximum distance covered by satellite communication is 1500km.40). Which of the following are the main components in satellite communication? Uplink Downlink Transponder All the above HintThe main components in satellite communication are uplink, downlink, and transducer.41). Which of the following is the function of a transponder? It boots incoming signal It reduces the frequency of a signal It adds noise All the above HintThe function of a transponder is to boots incoming signals and change their frequency.42). INSAT stands for ________. Indian National Satellite International Satellite Either a or b None of the above HintINSAT stands for Indian National Satellite.43). How many transponders are present in an INSAT? 100 200 250 More than 200 HintThere are more than 200 transponders are present in an INSAT.44). Satellite communication services are classified into how many types? One Two Three Four HintSatellite communication services are classified into 2 types, one-way, and two-way communication.45). Which of the following is a true statement according to one way satellite communication? It takes place between one or multiple earth stations via satellite Information is exchanged between two earth stations Both a and b None of the above HintOne way satellite communication takes place between one or multiple earth stations via satellite.46). Which of the following is a true statement according to two way satellite communication? It takes place between one or multiple earth stations via satellite Information is exchanged between two earth stations Both a and b None of the above HintIn two-way satellite communication, information is exchanged between two earth stations.47). Which of the following are the examples of one way satellite communication? Radio Tracks space operation service Internet services All the above HintExamples of one-way satellite communication are radio tracks space operation service and internet services.48). Which of the following are the advantages of satellite communication? Covers maximum bandwidth It provides elasticity property Reliability All the above HintThe advantages of satellite communication are it covers maximum bandwidth, provides elasticity property, and is highly reliable.49). Which of the following are the disadvantages of satellite communication? It is a cost effective procedure It may block frequencies There is a chance for signal interference. All the above HintThe following are the disadvantages of satellite communication, they are it is a cost-effective procedure, it may block frequencies and there is a chance for signal interference.50). Which of the following are the applications of satellite communications? TV Radio Military All the above HintThe applications of satellite communications are TV, radio, military communication.Satellite Communication MCQs with Answers51). Which of the following countries have their own satellites? India Japan China All the above HintThe countries that have their own satellites are India, China, Japan.52). Which of the following is the own satellite of India? Rohini D1 Ohsumi Dong Fang Hong I GSAT HintIndia has its own satellite name “Rohini D1”.53). Which of the following is the own satellite of China? Rohini D1 Ohsumi Dong Fang Hong I GSAT HintChina has its own satellite name” Dong Fang Hong I”.54). Which of the following is the own satellite of Japan? Rohini D1 Ohsumi Dong Fang Hong I GSAT HintJapan has its own satellite name “Ohsumi”.55). A spacecraft capable of supporting a human crew in orbit for an extended period of time is called _______. Space station Orbital space Work station Both a and b HintA spacecraft capable of supporting a human crew in orbit for an extended period of time is called a space station or an orbital space.56). How many laws of Kepler supports satellite communication? 2 3 4 6 HintKepler supports satellite communication 3 laws.57). Which of the following is true regarding Kepler's first law? It states that the sun is at the center, and other planets revolve around it in an elliptical manner It states that the area covered by satellites with respect to the center of the earth is equal, at regular intervals of time. It states that the square of a time period of an orbit is proportional to the mean distance to the power of three between 2 bodies. Both b and c HintKepler's first law, states that the sun is at the center, and other planets revolve around it in an elliptical manner.58). Which of the following is true regarding Kepler's second law? It states that the sun is at the center, and other planets revolve around it in an elliptical manner It states that the area covered by satellites with respect to the center of the earth is equal, at regular intervals of time. It states that the square of a time period of an orbit is proportional to the mean distance to the power of three between 2 bodies. Both b and c HintKepler's second law, states that the area covered by satellites with respect to the center of the earth is equal, at regular intervals of time.59). Which of the following is true regarding Kepler's third law? It states that the sun is at the center, and other planets revolve around it in an elliptical manner It states that the area covered by satellites with respect to the center of the earth is equal, at regular intervals of time. It states that the square of a time period of an orbit is proportional to the mean distance to the power of three between 2 bodies. Both b and c HintKepler's third law, states that the square of a time period of an orbit is proportional to the mean distance to the power of three between 2 bodies.60). Which of the following is the factor the carrier to noise ratio of a satellite depends on? Bandwidth Path loss that provides free loss An isotropic antenna radiates power effectively All the above HintThe factor the carrier to noise ratio of a satellite depends on are Bandwidth, the path loss that provides free loss and an isotropic antenna radiates power effectively.61). Which of the following are the units of data rate? Bits/seconds Meters Centimeters Bits HintThe unit of data rate is bits/sec.62). Which of the following are the units of Swath width? Bits/seconds Meters Centimeters Bits HintThe unit of Swath width is Meters.63). Which of the following are the units of Across track pixel dimension? Bits/seconds Meters Centimeters Bits HintThe units of Across track pixel dimension is Meters.64). Which of the following are the units of ground track velocity? Bits/seconds Meters/second Centimeters Bits HintThe units of ground track velocity is Meters/second.65). Which of the following are the units of along track pixel dimension? Bits/seconds Meters Centimeters Bits HintThe units of along-track pixel dimension in meters.66). Which of the following are the units of bits/pixel? Bits/seconds Meters Centimeters Bits HintThe units of bits/pixel is bits.67). Which of the following is true when the data rate is reduced? Duty cycles are increased There will be a change in amplitude There will be compression in data All the above HintWhen the data rate is reduced, the duty cycles are increased, a change in amplitude is observed and there will be compression in the data.68). How many types of orbits are present in satellite communication? 3 4 5 6 HintThere are 4 types of orbits are present in satellite communication namely, GEO, MEO, LEO, HEO.69). GEO stands for ______. Geostationary orbit Google stationary orbit Geo stand orbit None of the above HintGeo stands for geostationary orbit.70). MEO stands for _______. Medium earth orbit Media earth orbit Mass earth orbit None of the above HintMEO stands for medium earth orbit.71). LEO stands for ______. Low earth orbit Level earth orbit Low equal orbit None of the above HintLEO stands for Low earth orbit.72). Do geosynchronous orbits have the same rotational velocity as earth? Yes No Maybe Depends on orbits position HintYes, geosynchronous orbits do have the same rotational velocity as earth.73). What is the velocity of geosynchronous orbit? 11300 km/hr 35000km/hr 5690 km/hr 31456 km/hr HintThe velocity of geosynchronous orbit is 11300 km/hr.74). Which of the following orbit has equal lower altitude and higher velocity? Geosynchronous orbit Asynchronous orbit Geostationary orbit Both a and b HintThe orbit that has equal lower altitude and higher velocity Asynchronous orbit.Satellite Communication Interview Questions & Answers75). GEO is _______ km away from the earth. 36000 km 6000–20,000km 500–1500 km 1000 km HintGEO is 36000 km away from earth.76). MEO is _______ km away from the earth. 36000 km 6000 – 20,000km 500 – 1500 km 1000 km HintMEO is 6000 – 20,000km away from earth.77). LEO is ______ km away from the earth. 36000 km 6000 – 20,000km 500 – 1500 km 1000 km HintLEO is 500 – 1500 km away from the earth.78). Is geostationary not useful for global coverage? Yes No Maybe Depends on the position of orbit HintYes, geostationary is not useful for global coverage.79). Does MEO requires fewer satellites? Yes No Maybe Depends on the distance HintYes, MEO requires fewer satellites.80). A MEO satellite distance gives ____ and ____ signal compared to LEO. Time delay, weak Time delay, strong High frequency, weak None of the above HintAn MEO satellite distance gives time delay and weak signal compared to LEO.81). Which of the following orbit is much close to earth? LEO GEO MEO Both a and b HintLEO orbit is much close to earth than GEO.82). Does LEO orbit requires routing? Yes No Maybe Depends HintYes, LEO orbit requires routing. Read more about Routing.83). ISL stands for _______. Inter satellite link Intermediate satellite link Inter stationary link Intermediate stationary link HintISL stands for intersatellite link.84). GWL stands for _______. Gateway Link Geo link Graphic link Gateway line HintGWL stands for Gateway Link.85). UML stands for _______. User mobile link User multi link Up mobile link HintUML stands User mobile link.86). Which of the following connects 2 satellites on different objects? ISL UML GML Both a and b HintISL connects 2 satellites on different objects.87). Which of the following are the algorithms used in satellite communication? MHA – minimum hops algorithm MCA – Minimum cost Algorithm Dijkstra shortest algorithm All the above HintThe algorithms used in satellite communication MHA – minimum hops algorithm, MCA – Minimum cost Algorithm, Dijkstra shortest algorithm.88). What is the altitude of geosynchronous orbit? 35786 km 35000km 5690 km 31456 km HintThe altitude of geosynchronous orbit is 35786km.89). PIM stands for ________. Pulse interval modulation Pulse internet modulation Pulse internal mode None of the above HintPIM stands Pulse interval modulation.90). Which of the following is an uplink satellite? A signal transmitted from earth station to satellite Signal transmitted from a satellite to earth station Both a or b None of the above HintIn an uplink satellite, a signal is transmitted from the earth station to the satellite.91). Which of the following is a downlink satellite? A signal transmitted from earth station to satellite Signal transmitted from the satellite to earth station Both a or b None of the above HintIn a downlink satellite signal transmitted from the satellite to the earth station.92). Simplex type transmission is observed in ______. TV Radio Telephone All the above HintSimplex type transmission is observed in TV.93). Which of the following condition satisfies for an elliptical orbit? 1<e<2 0<=e 0<e<1 0<e<4 HintThe condition that satisfies an elliptical orbit is 0<=e.94). The point far from the earth is called ______. Apogee Perigee Longitude Latitude HintThe point far from the earth is called Apogee.95). The point close to earth is called _______. Apogee Perigee Longitude Latitude HintThe point close to earth is called Perigee.96). Which of the following technique is suitable for digital transmission? TDMA FDMA CDMA Both a and b HintTDMA technique is suitable for digital transmission.97). The signals that are transmitted and received are separated using _____. Diplexer Duplexer Simplexer Both a and b HintThe signals that are transmitted and received are separated using diplexer.98). The ratio between signal and noise power at the receiver is called ______. SNR BNR ENR None of the above HintThe ratio between signal and noise power at the receiver is called SNR – a signal to noise ratio.99). Units of SNR is _______. dB Meters Centimeters Hertz HintUnits of SNR is dB.100). Is sky noise a type of antenna losses? Yes No Maybe HintYes, a sky noise is a type of antenna losses. Time is Up! Time's up
