Satellite Communication Question & Answers March 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 Hint 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 Hint 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 Hint 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 Hint 5). After the up-linking process, a satellite _____ and _____ the signal. Receives, amplifies Amplifies, receives Receives, adds noise Adds noise and transmits Hint 6). Does the satellite retransmits the signal to the earth station after amplifying? Yes No Depends on the climate Hint 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 Hint 8). DTH in DTH satellite equipment stands for ________. Direct to home Direction to home Detection of home All the above Hint 9). Which of the following is the first artificial satellite? Sputnik GSAT-17 GSAT19 IRNSS-1H Hint 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 Hint 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 Hint 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 Hint 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 Hint 14). In which year Sputnik1 artificial satellite was launched. 1957 1958 1960 1954 Hint 15). NASA stands for ______. National Auto Space Administration National Aeronautics and Space Administration Net Aeronautics and Space Administration National Aeronautics and satellite Administration Hint 16). Which of the following is the first 2 way communication active satellite? Telstar FalconSAT-2 FalconSAT-1 AISAT-1 Hint 17). Which of the following are the examples of digital satellites? FalconSAT-2 FalconSAT-1 AISAT-1 All the above Hint 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 Hint 19). Which of the following are the examples of natural satellites? Sun Moon Planets All the above Hint 20). Which of the following are man made satellites? FalconSAT-1 AISAT-1 Sun Both a and b Hint 21). Satellites are classified into ______ types. 9 10 8 12 Hint 22). GPS stands for _______. Global Positioning System Guide Position System Guide Posting System Global pointing System Hint 23). GEOs stands for _______. Geostationary Satellite Geo standing Satellite Global stationary Satellite None of the above Hint 24). How many techniques are used for achieving multiple access? 2 3 4 5 Hint 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 Hint Satellite Communication Exam Questions & Answers 26). FDD technique in multiplexing stands for _______. Frequency division duplex Frequency double division Frequency duplex division Frequency division double Hint 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 Hint 28). FDMA is used in ______ systems. Analog systems Digital systems Both a and b None of the above Hint 29). Which of the following are the examples of FDMA? AMPS NMT Radiocom All the above Hint 30). Is FDMA a continuous transmission scheme. Yes No Depends on the type of communication Hint 31). Which of the following are the examples of analog systems that FDMA is implemented? AMPS NMT Radiocom 2000 All the above Hint 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 Hint 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 Hint 34). TWT stands for _______. Travelling wave tube Transport wave tube Travel waveguide tube None of the above Hint 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 Hint 36). A communication satellite is a _______ satellite. Artificial satellite Natural satellite Man made satellite Either a or c Hint 37). A communication satellite uses ______ to transmit signal. Antenna Transponder Oscillator None of the above Hint 38). Which of the following are the components in satellite communication? Mixer Transponder Filter All the above Hint 39). What is the maximum distance covered by satellite communication? 1300 km 1500 km 1800 km 1100 km Hint 40). Which of the following are the main components in satellite communication? Uplink Downlink Transponder All the above Hint 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 Hint 42). INSAT stands for ________. Indian National Satellite International Satellite Either a or b None of the above Hint 43). How many transponders are present in an INSAT? 100 200 250 More than 200 Hint 44). Satellite communication services are classified into how many types? One Two Three Four Hint 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 Hint 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 Hint 47). Which of the following are the examples of one way satellite communication? Radio Tracks space operation service Internet services All the above Hint 48). Which of the following are the advantages of satellite communication? Covers maximum bandwidth It provides elasticity property Reliability All the above Hint 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 Hint 50). Which of the following are the applications of satellite communications? TV Radio Military All the above Hint Satellite Communication MCQs with Answers 51). Which of the following countries have their own satellites? India Japan China All the above Hint 52). Which of the following is the own satellite of India? Rohini D1 Ohsumi Dong Fang Hong I GSAT Hint 53). Which of the following is the own satellite of China? Rohini D1 Ohsumi Dong Fang Hong I GSAT Hint 54). Which of the following is the own satellite of Japan? Rohini D1 Ohsumi Dong Fang Hong I GSAT Hint 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 Hint 56). How many laws of Kepler supports satellite communication? 2 3 4 6 Hint 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 Hint 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 Hint 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 Hint 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 Hint 61). Which of the following are the units of data rate? Bits/seconds Meters Centimeters Bits Hint 62). Which of the following are the units of Swath width? Bits/seconds Meters Centimeters Bits Hint 63). Which of the following are the units of Across track pixel dimension? Bits/seconds Meters Centimeters Bits Hint 64). Which of the following are the units of ground track velocity? Bits/seconds Meters/second Centimeters Bits Hint 65). Which of the following are the units of along track pixel dimension? Bits/seconds Meters Centimeters Bits Hint 66). Which of the following are the units of bits/pixel? Bits/seconds Meters Centimeters Bits Hint 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 Hint 68). How many types of orbits are present in satellite communication? 3 4 5 6 Hint 69). GEO stands for ______. Geostationary orbit Google stationary orbit Geo stand orbit None of the above Hint 70). MEO stands for _______. Medium earth orbit Media earth orbit Mass earth orbit None of the above Hint 71). LEO stands for ______. Low earth orbit Level earth orbit Low equal orbit None of the above Hint 72). Do geosynchronous orbits have the same rotational velocity as earth? Yes No Maybe Depends on orbits position Hint 73). What is the velocity of geosynchronous orbit? 11300 km/hr 35000km/hr 5690 km/hr 31456 km/hr Hint 74). Which of the following orbit has equal lower altitude and higher velocity? Geosynchronous orbit Asynchronous orbit Geostationary orbit Both a and b Hint Satellite Communication Interview Questions & Answers 75). GEO is _______ km away from the earth. 36000 km 6000–20,000km 500–1500 km 1000 km Hint 76). MEO is _______ km away from the earth. 36000 km 6000 – 20,000km 500 – 1500 km 1000 km Hint 77). LEO is ______ km away from the earth. 36000 km 6000 – 20,000km 500 – 1500 km 1000 km Hint 78). Is geostationary not useful for global coverage? Yes No Maybe Depends on the position of orbit Hint 79). Does MEO requires fewer satellites? Yes No Maybe Depends on the distance Hint 80). A MEO satellite distance gives ____ and ____ signal compared to LEO. Time delay, weak Time delay, strong High frequency, weak None of the above Hint 81). Which of the following orbit is much close to earth? LEO GEO MEO Both a and b Hint 82). Does LEO orbit requires routing? Yes No Maybe Depends Hint Read more about Routing. 83). ISL stands for _______. Inter satellite link Intermediate satellite link Inter stationary link Intermediate stationary link Hint 84). GWL stands for _______. Gateway Link Geo link Graphic link Gateway line Hint 85). UML stands for _______. User mobile link User multi link Up mobile link Hint 86). Which of the following connects 2 satellites on different objects? ISL UML GML Both a and b Hint 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 Hint 88). What is the altitude of geosynchronous orbit? 35786 km 35000km 5690 km 31456 km Hint 89). PIM stands for ________. Pulse interval modulation Pulse internet modulation Pulse internal mode None of the above Hint 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 Hint 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 Hint 92). Simplex type transmission is observed in ______. TV Radio Telephone All the above Hint 93). Which of the following condition satisfies for an elliptical orbit? 1<e<2 0<=e 0<e<1 0<e<4 Hint 94). The point far from the earth is called ______. Apogee Perigee Longitude Latitude Hint 95). The point close to earth is called _______. Apogee Perigee Longitude Latitude Hint 96). Which of the following technique is suitable for digital transmission? TDMA FDMA CDMA Both a and b Hint 97). The signals that are transmitted and received are separated using _____. Diplexer Duplexer Simplexer Both a and b Hint 98). The ratio between signal and noise power at the receiver is called ______. SNR BNR ENR None of the above Hint 99). Units of SNR is _______. dB Meters Centimeters Hertz Hint 100). Is sky noise a type of antenna losses? Yes No Maybe Hint Time is Up! Time's up
