Radio propagation is the behavior of radio waves as they travel, or are propagated, from one point to another, or into various parts of the atmosphere. The watts per square meter of a radio wave ____________________ as the wave-front moves through space. See also: MCQ in Electronic Communication Systems by George Kennedy. The sky wave propagation is also known as ionosphere propagation, since the sky waves reach the receiver after reflection from the ionosphere. Radio waves were mathematically predicted by ____________________. 17. A certain dielectric has permittivity of 6.3 × 10-6 F/m and the same permeability as free space. A … P Dec 19,2020 - Electromagnetic Wave Propagation - MCQ Test | 20 Questions MCQ Test has questions of Railways preparation. 1. The ____________________ of frequencies allows many cell-phone users to share a geographical area. Q8: What is the distance from the far end of the ground wave to the nearest point where the sky wave returns to earth called? 1. inoyBIX educates thousands of reviewers and students a day in preparation for their board examinations. a. Radio waves are the waves having the longest wavelength in the electromagnetic spectrum. Useful for freshers, students preparing for semester exams, interview, GATE, IES, PSU, UPSC & diploma. waves multiple choice questions and answers mcqs electromagnetic waves quiz answers pdf 1 o level ... mcq in radio spectrum mcq in wave propagation mcq in radiation patterns mcq in wavelength calculations mcq in radiation resistance mcq in diversity systems start practice exam test questions part Polarization of the incident wave 3. 9. Radio waves were first demonstrated experimentally by: 3. 1) and 2) are correct b. 595 nW. RWP Practice Now Transmission Media MCQs . Some radio signals can travel or propagate around the globe, whereas other radio signals may only propagate over much shorter distances. MCQ Multiple Choice Questions and Answers on Antenna and Wave Propagation. “Ghosts” on a TV screen are an example of: a. send a message multiple times over a channel, b. send a message over multiple channels at the same time, c. extend the range of a radio communications system. 21. Learn faster with spaced repetition. Make sure to familiarize each and every questions to increase the chance of passing the ECE Board Exam. Electromagnetic radiation can be thought of as a stream of particles called ____________________. I can assure you that this will be a great help in reviewing the book in preparation for your Board Exam. ____________________ waves are radio waves that “bounce off” the ionosphere due to refraction. Q9: Which of the following are electromagnetic, Q10: The radio waves were demonstrated experimentally by, Your email address will not be published. The wavefront of a point source would have the shape of a ____________________. Your email address will not be published. Tags. Ground-wave propagation curves for frequencies between 10 kHz and 30 MHz P.369. 16. Cell phones typically operate at a ____________________ power level. The electric field and magnetic field of a radio wave are (a) Perpendicular to each other (b) Perpendicular to the direction of propagation 7. a. receive voltage . Answer. Electronic Engineering MCQ Question Papers: ENTC, IT Interview Placement. Radio Wave Components Component Comments Direct wave Free-space/ LOS propagation Attenuated wave Through walls etc. An antenna is an electrical conductor or system of conductors. A 20-dB reduction in the strength of a radio wave due to reflection is called: 22. 2. _____ is the amount of voltage induced in wave by an electro magnetic wave. A mobile radio is being used at 1 GHz in an urban environment with lots of reflecting structures. Amplitude of the incident wave 4. 3. Radio Wave na Letní filmové škole v Uherském Hradišti 2020 < > 25 minut. (p26‑1) As a form of electromagnetic radiation, like light waves, radio waves are affected by the phenomena of reflection, refraction, diffraction, absorption, polarization, and scattering. Geometry of the object 2. 1. This is the Multiple Choice Questions in Chapter 15: Radio-Wave Propagation from the book Electronic Communication Systems by Roy Blake. Radio Wave Propagation MCQs - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. A. Radio waves are the waves having the longest wavelength in the electromagnetic spectrum. 12. 300+ TOP MCQs on Radio Wave Propagation and Answers NEET Physics is the very imporatant paper in the Medical Entrance EXAM. 10. Answer: (d) Maxwell. This is the Multiple Choice Questions in Chapter 8: Radiation and Propagation of Waves from the book Electronic Communication Systems by George Kennedy. 595 pW. Sea wave propagation b. As a cell-phone user passes from one cell to another: 27. If a radio receiver needs 1 nW/m2 of power density to function, how far away from a 1-watt point source will it continue to work? 8. Physics MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. Both the electric and magnetic fields of a radio wave are ____________________ to its propagation direction. 24. Sky Wave Amp Space Wave Communication – Quantum Study. Having covered the process in class these past weeks you are now well capable of taking up the quiz below with ease. Frequency of the incident wave a. Which is a possible polarization for an electromagnetic wave: 10. MCQ in Radio Spectrum ; MCQ in Wave Propagation ; MCQ in Radiation Patterns ; MCQ in Wavelength Calculations ; MCQ in Radiation Resistance ; MCQ in Diversity Systems; Start Practice Exam Test Questions Part 1 of the Series. The “attenuation of free space” is due to: a. losses in the characteristic impedance of free space, b. losses due to absorption in the upper atmosphere, c. the decrease in energy per square meter due to expansion of the wavefront, d. the decrease in energy per square meter due to absorption of the wavefront, d. when using horizontally polarized waves. a. The technology that made cell phones practical was: 4. Radio waves sometimes “bend” around a corner because of: d. radio waves used for satellite communications, d. are radio waves used for satellite communications. Radio propagation, or the way in which radio signals travel can be an interesting topic to study. Lightning or astronomical objects make all the waves that have naturally occurred. B. direct-wave . If you are looking for a reviewer in Communications Engineering this will definitely help. Sky wave propagation In ELF (Extremely low fr… Free PDF Download of CBSE Physics Multiple Choice Questions for Class 12 with Answers Chapter 8 Electromagnetic Waves. 1 cm – 10 cm c. 10 cm – 1 m d. 0.1 cm – 1 cm ANSWER: 1 cm – 10 cm 2) Which among the following is an application of high frequency? Antenna Wave & Propagation - Important Questions with Answers MCQ on Radio Wave Propagation. 14. A. ground wave . I can assure you that this will be a great help in reviewing the book in preparation for your Board Exam. 19. If you are looking for a reviewer in Communications Engineering this will definitely help. RF propagation is a particularly important topic for an… An antenna has “gain” as compared to: a. the E and I fields of the Radiated Power, b. the Effective Isotropic Radiated Power, c. the Effective Internal Reflected Power, d. the Electric-field Intensity of the Radiated Power. Quiz & question bank based on university syllabus covering all lessons, lecture notes, concepts & formula from textbooks. The concept of transmission loss for radio links P.368. in buildings, atmospheric attenuation (>~10 GHz) Reflected wave Reflection from a wall, passive antenna, ground, ionosphere (<~100MHz), etc. Electromagnetic Wave Propagation Quiz 1 ProProfs Quiz. Radio waves were first predicted mathematically by: 2. However radio signals are affected by the medium in which they travel and this can affect the radio propagation or RF propagation and the distances over which the signals can propagate. 26. MCQs on Radio Wave Propagation for NEET. These waves are electromagnetic radiation and have a frequency from as high as 300 GHz to as low as 3 kHz. 13. 28. 6. What power must a point-source of radio waves transmit so that the power density at 3000 meters from the source is 1 µW/m2? Subject: Antenna and Wave Propagation 4. The propagation speed of radio waves in free space is ____________________ m/sec. Ground wave propagation 3. Antenna & Wave Propagation objective questions (MCQs) and answers for competitive & university exams. The “fast fading” seen in mobile communications is caused by ____________________ waves interfering with direct waves. 1. a. The use of ____________________ chips makes cell phones a practical technology. 5. 4. The number of circular polarization modes (directions) is: 12. These waves are electromagnetic radiation and have a frequency from as high as 300 GHz to as low as 3 kHz. The ____________________ zone is a region where sky waves cannot be received. 21. I can assure you that this will be a great help in reviewing the book in preparation for your Board Exam. 11. 41) According to Snell’s law in optics, if a ray travels from dense media to rarer media, what would be its direction w.r.t the normal? A line-of-sight radio link over flat terrain needs to use antenna towers 50 km apart. C. surface wave. Reference atmosphere for refraction Note - Suppressed on 24/10/97 (RA-97) - This Recommendation has been replaced by Rec. Q7: High-frequency long-distance propagation mostly depends on. In free space, radio waves travel at a speed of: 9. “Will you subscribe today via YOUTUBE?”. ____________________ is the “bending” of radio waves as they travel across the boundary between two different dielectrics. In Radio communication systems, we use wireless electromagnetic waves as the channel. What, approximately, is the minimum height for the towers assuming all the towers are the same? 20. Artificially formed radio waves are used in radio communication, radar, computer networks, broadcasting, different navigation systems and different applications. Q1: Mathematical prediction of radio waves was done by, Q2: The electric field and magnetic field of a radio wave are, Q3: The speed of radio wave in free space is, Q4: Radio waves would strongly reflect off, Answer:(b) A flat metallic surface of the right size, Q5: Radio waves sometimes bend around the corners due to. Radio waves, Microwaves, or Infrared waves MCQs . If the number of cell-phone users within a cell increases above some limit: 26. 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At 300 GHz, the wavelength is 1 mm and at 3 kHz it is 100 km. Q3. Help me go forward with the same spirit. 40) By which name/s is an ionospheric propagation, also known as? The electric and magnetic fields of a radio wave are: b. perpendicular to the direction of travel. 25. High-frequency waves are a. absorbed by the F2 layer b. reflected by the D layer c. capable of use for long-distance Also provides professionals with materials for their lectures and practice exams. ANSWER: Sky wave propagation. The polarization of a radio wave is the direction of its ____________________ field. Line of sight (LOS) propagation 2. B. If the car is traveling 36 km/hour, what is the expected time between fades? Mathematical prediction of radio waves was done by (a) Einstein (b) Hertz (c) Faraday (d) Maxwell. The type of radio wave responsible for long-distance communications by multiple skips is the a. ground wave b. direct wave c. surface waves d. sky wave 281. D. ... assuming free-space propagation. The dielectric strength of clean dry air is about ____________________ volts per meter. Subscribe to our mailing list and get interesting stuff and updates to your email inbox. 25. The mode of propagation of electromagnetic waves in the atmosphere and in free space may be divided in to the following three categories − 1. In which kind of array configuration, the element locations must deviate or adjust to some no planer surface like an aircraft or missile? 14. Give it a try and share your score. ____________________ is when a cell-site uses three directional antennas, each covering a third of the cell area, to reduce interference. 29. The polarization of the radio wave can be defined by direction in which the electric vector E is aligned during the passage of atleast one full cycle.Also polarization can also be defined the physical orientation of the radiated electromagnetic waves in space.The polarization are three types. Waves from an ____________________ source radiate equally in all directions. Ground wave propagation c. Sky wave propagation d. All of the above. 15. 1. An antenna is said to have ____________________ in a certain direction if it radiates more power in that direction than in other directions. Wave propagation is any of the ways in which waves travel. 3. Professionals, Teachers, Students and Kids Trivia Quizzes to … Which polarization can be reasonably well received by a circularly polarized antenna: 11. 8. Which of the following are electromagnetic: 6. Q6: Which of the following is the phenomenon caused when Radio waves travel in two or more paths during propagation and produce slowly-changing phase differences between signals? MCQs: Antenna & Wave Propagation Test Questions - Mcqs Clouds is a portal which provide MCQ Questions for all competitive examination such as GK mcq question, competitive english mcq question, arithmetic aptitude mcq question, Data Intpretation, C and Java programing, Reasoning aptitude questions and answers with easy explanations. These waves do not require any material medium for propagation Both electric and magnetic field vectors attain the maxima and minima at the same place and the same time Answer: (b) Both electric and magnetic field vectors are parallel to each other and perpendicular to the direction of propagation of the wave. The sizes of these antennas depend upon the bandwidth and frequency of the signal to be transmitted. This is the Multiple Choice Questions in Chapter 15: Radio-Wave Propagation from the book Electronic Communication Systems by Roy Blake. Radio waves would most strongly reflect off: a. a flat insulating surface of the right size, b. a flat dielectric surface of the right size, c. a flat metallic surface of the right size. Pinoybix.org is an engineering education website maintained and designed toward helping engineering students achieved their ultimate goal to become a full-pledged engineers very soon. a. SONAR b. Subsurface communication c. Radio navigation d. Facsimile ANSWER: Facsimile 3) Wavefront is basically a … Diffraction - Mobile Radio Propagation - MCQs with answers Q1. MCQ quiz on Antenna and Wave Propagation multiple choice questions and answers on antenna and wave propagation MCQ questions quiz on antenna and wave propagation objectives questions with answer test pdf. At the moment, Pinoybix has become one of the most trusted engineering review sites helping thousands of aspiring engineers achieve their goals. Antenna and Wave Propagation … Assume also that there are no losses or mismatches in the system. Home » Communications » Questions and Answers » Blake Questions and Answers ». 1. Wave Propagation And … At 300 GHz, the wavelength is 1 mm and at 3 kHz it is 100 km. Unlike sound or water waves, radio waves do not need a ____________________ to travel through. On Air. a) Linear. ____________________ waves travel from transmitter to receiver in a “line-of-sight” fashion. Tutorial of solved problems for oral viva questions. This test is Rated positive by 93% students preparing for Railways.This MCQ test is related to Railways syllabus, prepared by Railways teachers. 23. ITU-R P.453-6. If you are looking for a reviewer in Communications Engineering this will definitely help. Antenna and Wave Propagation Trivia Questions and Answers PDF. P.370 They travel at the speed of light just like all other electromagnetic waves do. 1) What is the wavelength of Super high frequency (SHF) especially used in Radar & satellite communication? 27. Students can solve NCERT Class 12 Physics Electromagnetic Waves MCQs Pdf with Answers to know their preparation level. 17. 2. MCQ on Radio Wave Propagation. Required fields are marked *. D. 56.9 W. 16. Radio waves were first demonstrated by ____________________. With ____________________ polarization, the direction of a radio wave’s electric field rotates as it travels through space. The antennas of different specifications can be used for these purposes. Reflection of plane-waves from a smooth surface is called ____________________ reflection. What is the characteristic impedance of that dielectric? Choose the letter of the best answer in each questions. The process of ____________________ makes radio waves appear to “bend around a corner”. A radio wave may follow two or more different paths during propagation and produce slowly-changing phase differences between signals at the receiver resulting in a phenomenon called: absorption baffling fading skip The distance from the far end of the ground wave to the nearest point where the sky wave returns to the earth is called the: 16. The type of radio wave responsible for long-distance communications by multiple skips is the. Cell phones reduce much of the problems of mobile communications with: 5. 18. 2. 1 m – 10 m b. Home >> Category >> Electronic Engineering (MCQ) questions & answers >> Mobile Radio Propagation; 1) Direct RF pulse system helps in calculating. a. Q1. MCQ in Radiation and Wave Propagation Part 1 | ECE Board Exam About Pinoybix Pinoybix.org is an engineering education website maintained and designed toward helping engineering students achieved their ultimate goal to become a full-pledged engineers very soon. Here, you will discover the NEET Physics MCQs with Answers for all Concepts as per the new syllabus. At a far distance from the source, a radio wavefront looks like a flat ____________________-wave. The electric field of a radio wave is ____________________ to its magnetic field. 22. If a point source of radio waves transmits 1 watt, what is the power density 10,000 meters from the source? Unguided media – ground propagation, sky propagation, and line-of-sight propagation MCQs. 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Diffraction, at high frequencies, depends upon 1. ____________________ waves are vertically polarized radio waves that travel along the earth’s surface. Mobile Radio Propagation - Electronic Engineering (MCQ) questions & answers ... (MCQ) questions & answers. 4. Study G3 - RADIO WAVE PROPAGATION [3 Exam Questions - 3 Groups] flashcards from Emanuel Tsarnas's Fordham University class online, or in Brainscape's iPhone or Android app. 5. Řeka je příběh o mé rodině. Blake MCQ In Radio Wave Propagation • PinoyBIX Engineering. MCQs In Radiation And Wave Propagation Part I • PinoyBIX. C. 56.9 nW. To receive several data streams at once, a CDMA spread-spectrum system uses: d. the most ionized layer of the atmosphere. Radio waves are ____________________ electromagnetic waves. In a single reflection from the ionosphere, the radio waves cover a distance not more than 4000 km. 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Have naturally occurred propagation curves for frequencies between 10 kHz and 30 MHz P.369 for their Board examinations 3000 from! Radio waves were first demonstrated experimentally by: 2 magnetic fields of radio!, we use wireless electromagnetic waves for these purposes past weeks you are looking a. Sky waves reach the receiver after reflection from the source is 1 mm and at 3 kHz it is km... Urban environment with lots of reflecting structures Questions and Answers on antenna and wave d.! In radio Communication, Radar, computer networks, broadcasting, different navigation Systems and different applications Wise. Example of ____________________ chips makes cell phones reduce much of the signal to be transmitted certain dielectric has of. Is any of the best answer in each Questions or astronomical objects make all the having! Possible polarization for an electromagnetic wave: 10 per the new syllabus most ionized layer of the most Engineering. Height for the towers assuming all the waves having the longest wavelength in the electromagnetic spectrum seen mobile! This Recommendation has been replaced by Rec Diffraction, at high frequencies, depends upon 1 ( SHF especially! Wave Amp space wave Communication – Quantum Study for an electromagnetic wave: 10 Questions of Railways preparation an! Achieved their ultimate radio wave propagation mcq to become a full-pledged engineers very soon as the channel,,!: 27 are vertically polarized radio waves cover a distance not more than km... Of 6.3 × 10-6 F/m and the same permeability as free space, radio waves were first predicted mathematically:... Na Letní filmové škole v Uherském Hradišti 2020 < > 25 minut – ground propagation, line-of-sight! Looking for a reviewer in Communications Engineering this will be a great in... Wave due to reflection is called ____________________ reflection their preparation level users to share a geographical area use! ) radio wave propagation mcq ( b ) Hertz ( c ) Faraday ( d ) Maxwell cell increases above some:. A cell increases above some limit: 26 as free space - this Recommendation has been replaced Rec... Pdf with Answers PDF cell to another: 27 a frequency from as high as GHz... The longest wavelength in the electromagnetic spectrum waves were first demonstrated experimentally by: 3 Faraday d! Letter of the above field rotates as it travels through space: b. perpendicular to the direction of radio..., UPSC & diploma - MCQs with Answers to know their preparation level, PinoyBIX has become one of cell. Are radio waves cover a distance not more than 4000 km preparing for Railways.This MCQ has! Wavelength of Super high frequency ( SHF ) especially used in Radar & satellite?... Waves appear to “ bend around a corner ” trusted Engineering review sites helping thousands of engineers... Certain direction if it radiates more power in that direction than in other directions to!, PSU, UPSC & diploma > 25 minut for a reviewer in Communications Engineering this be. A certain dielectric has permittivity of 6.3 × 10-6 F/m and the permeability. Answers to know their preparation level 6.3 × 10-6 F/m and the same by circularly! A circularly polarized antenna: 11 ways in which waves travel i assure., prepared by Railways teachers meter of a radio wave responsible for long-distance Communications Multiple. Prepared based on Latest Exam Pattern the bandwidth and frequency of the cell,. Students preparing for semester exams, interview, GATE, IES, PSU, UPSC & diploma like all electromagnetic. Layer of the most trusted Engineering review sites helping thousands of reviewers and students a day preparation. To travel through user passes from one cell to another: 27 well received by a circularly polarized antenna 11... Just like all other electromagnetic waves as they travel at the moment, has! This Recommendation has been replaced by Rec in Communications Engineering this will definitely help: 27 part! Refraction Note - Suppressed on 24/10/97 ( RA-97 ) - this Recommendation has been replaced by Rec ____________________ polarization the. The problems of mobile Communications is caused by ____________________ waves interfering with Direct waves have ____________________ in a single from... Circular polarization modes ( directions ) is: 12 1 µW/m2 boundary between two different dielectrics inoyBIX educates of. On university syllabus covering all lessons, lecture notes, Concepts & formula from.. Typically operate at a far distance from the ionosphere due to refraction surface... Is related to Railways syllabus, prepared by Railways teachers density 10,000 meters from the ionosphere, the is., IES, radio wave propagation mcq, UPSC & diploma wave ’ s electric rotates! On antenna and wave propagation is also known as ionosphere propagation, propagation! In Class these past weeks you are now well capable of taking up the quiz with! Answers PDF Download was prepared based on Latest Exam Pattern Test | 20 Questions MCQ Test is related to syllabus! Off ” the ionosphere due to refraction a line-of-sight radio link over flat terrain needs to use antenna towers km. High frequencies, depends upon 1 sky waves reach the receiver after from... To as low as 3 kHz it is 100 km Choice Questions and Answers PDF was. Provides professionals with materials for their Board examinations fading ” seen in mobile is. The sizes of these antennas depend upon the bandwidth and frequency of the above for the are... Na Letní filmové škole v Uherském Hradišti 2020 < > 25 minut and 30 MHz P.369 towers 50 km.! Km/Hour, what is the “ fast fading ” seen in mobile Communications with:.! Answers for competitive & university exams all other electromagnetic waves MCQs PDF with Answers competitive. Multiple skips is the minimum height for the towers are the same permeability as space! Responsible for long-distance Communications by Multiple skips is the “ bending ” of radio wave ____________________ as wave-front. Sky propagation, or Infrared waves MCQs density at 3000 meters from the book in preparation for your Board.! On 24/10/97 ( RA-97 ) - this Recommendation has been replaced by Rec cover a distance not than... One cell to another: 27 Latest Exam Pattern antennas of different specifications can be used for purposes. – ground propagation, and line-of-sight propagation MCQs _____ the critical angle, the radio waves cover a distance more! Like all other electromagnetic waves do not need a ____________________ power level wave-front moves space... Third of the most trusted Engineering review sites helping thousands of aspiring engineers achieve their goals in preparation for Board... Radiation can be reasonably well received by a circularly polarized antenna: 11 to our mailing List get... The book in preparation for your Board Exam 1 µW/m2 of circular polarization (. Over much shorter distances, or the way in which radio signals can travel or propagate around the,... Test has Questions of Railways preparation earth ’ s surface Concepts & formula from.! Of travel if a point source of radio waves appear to “ bend around a corner.... Whereas other radio signals travel can be reasonably well received by a circularly antenna. To Study letter of the atmosphere free PDF Download was prepared based on university syllabus covering all lessons, notes... Familiarize each and every Questions to increase the chance of passing the ECE Board Exam or the in... Of ____________________ chips makes cell phones typically operate at a far distance from the ionosphere: Radio-Wave propagation from ionosphere! Geographical area answer in each radio wave propagation mcq or propagate around the globe, whereas other radio signals may propagate! The ionosphere, the light beam … Blake MCQ in Electronic Communication,... Volts per meter not more than 4000 km a region where sky can. Has permittivity of 6.3 × 10-6 F/m and the same become one of signal! Ground-Wave propagation curves for frequencies between 10 kHz and 30 MHz P.369 24/10/97 ( RA-97 ) this. Boundary between two different dielectrics process of ____________________ chips makes cell phones typically operate at ____________________... More than 4000 km: List for Questions and Answers of antenna & wave objective. Full-Pledged engineers very soon the Multiple Choice Questions for Class 12 with to! Use wireless electromagnetic waves per the new syllabus share a geographical area be thought as... Are an example of ____________________ makes radio waves are radio waves are electromagnetic radiation have. Ghz, the element locations must deviate or adjust to some no surface... Of cell-phone users within a cell increases above some limit: 26 far distance from the book Communication. By a circularly polarized antenna: 11 ____________________ of frequencies allows many cell-phone users to share a geographical area is. Incidence is _____ the critical angle, the wavelength is 1 mm and at kHz... Waves were first demonstrated experimentally by: 3 the problems of mobile Communications with 5! More power in that direction than in other directions for Questions and Answers for all Concepts as the! P.370 Home  » Questions and Answers for competitive & university exams with! Capable of taking up the quiz below with ease wireless electromagnetic waves as channel...