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mcq on reflector antenna

The calculation results are:. An antenna array is a radiating system, which consists of individual radiators and elements. 1. B Is less than that of dipole. D May be equal, more or less than that of dipole. The horizontal radiation pattern o a vertical dipole is a. figure- b. circle c. Narrow beam d. clover leaf. Some of the desired rays are not captured by the reflector antenna and this constitute spill over. The driven antenna 1the 3 images have currents of equal magnitude. Learn Electromagnetic Field Theory MCQ questions & answers are available for a Electrical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Dipole antenna 2. 11. Here you can download the free lecture Notes of Antenna and Wave Propagation Notes Pdf – AWP Notes pdf materials with multiple file links to download. 24 For a parabolic reflector of 5 meter diameter, the far field pattern measurement at 6 GHz should be carried out a distance of at least A 2.0 km. Aperture area of the feed 4. The total side to side beamwidth of the antenna main beam. 12. Verilog programs. In a TV receiver antenna the length of reflector rod. applied to analyze the corner reflector antenna for angle α = 180°/n, where n is any positive integer. D log-periodic array. MCQ in Basic considerations ; A dipole antenna requires to be fed with 20 kW of power to produce a given signal strength to a particular distant point. Last week, Yahsat chose Airbus to build Thuraya 4-NGS. Microwave Engineering solved MCQs with an answer 1. 48. 15. Flat-plate Reflector Antenna. A discone antenna is a version of a biconical antenna in which one of the cones is replaced by a disc. 7. 14. The phase of … What is the reason for using Yagi antenna for TV broadcast reception ? Dr.V.Thrimurthulu Lecture Notes Antenna & Wave Propagation CREC Dept. Page-6 section-1 Learn Communication Systems MCQ questions & answers are available for a Electrical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. What is primary radiation and secondary radiation as applicable to parabolic reflector ? C Is more than that of dipole. The diameter of the reflector 2. 46. FM dipole antenna is used as an FM broadcasting-receiving antenna for the FM broadcast band 88 MHz to 108 MHz. No such antenna exists in practice. Plane to spherical wave B. Spherical to plane wave C. Both a and b D. None of the above Ans: Spherical to plane wave 47. If the addition of a reflector makes the same field strength available with an input power of ... Antenna and Wave propagation mcq | Part-1 27. D o.5 km ... 28 The type of antenna to be used for producing circularly polarized beams is A helical antenna. In the analysis of the 90° corner reflector there are 3 image elements, 2, 3 and 4, located shown in Fig 6.5. of ECE P a g e | 6 mounted. How does a parabolic reflector provide very high gain ? Antenna and Wave Propagation Pdf notes book starts with the topics covering Antenna Basics, Thin Linear Wire Antennas, Antenna … Rhombic antenna 3. Which conversion mechanism is performed by parabolic reflector antenna? A. 2. What are the applications of Yagi – Uda antenna ? An antenna array can be better understood by observing the following images. Electromagnetic Field Theory MCQ question is the important chapter for a Electrical Engineering and GATE students. Which may be used to … B 1.5 km. B paraboloid. Bandwidth of the receiver Page-5 section-1 Director(s): Used to provide the antenna with directional power and gain. Which antenna radiating region/s has/have independent nature of angular field distribution over the distance from the antenna? i … In addition, undesired interferences are reduced compared to using an omnidirectional antenna because the transmitted signal is directed toward its intended recipient. Line: The spine of the antenna used to hold the directors and reflectors and connect to the driven element. C 1.0 km. Outside the radiation band S11ideally must be 0 dB which means reflecting all the incident power on the antenna… Anna University Regulation 2017 ECE Engineering (ECE) … If the addition of a reflector makes the same field strength available with an input power of 11kW. Antenna beamwidth calculator. In a Yagi antenna, maximum direction of radiation is toward the a. director b. driven element c. reflector … A. cathode_ray tube B. magnetron C. travelling_wave … A. The noise figure of a receiver is a measure of: 1. Enter the diameter of your parabolic dish in m (metres) and the operating frequency in GHz (Gigahertz) A typical VSAT is 1.2m diameter and transmits at 14 - 14.5 GHz. Reflector antennas: (Fig. A direction antenna with two or more elements is known as a(n) a. folded dipole b. ground plane c. loop d. array. l. ASSEMBLY INSTRUCTIONS FOR MOSLEY CUBICAL QUAD MODEL MCQ- 3B The high performance of your MOSLEY Antenna … Shaped Reflector Antenna; 1.Horn Antenna. Observe how the antenna arrays are connected. 5) o parabolic reflectors, corner reflectors o These are high gain antennas usually used in radio astronomy, microwave ELECTRONICS 100 IMPORTANT MCQ, electronics mcq, electronics communication objective questions and answers, NTS, PTS, STS April 20, 2020 ELECTRONICS 100 IMPORTANT MCQ's (Part-1) 1. ______is not a microwave tube. – 1000+ Multiple Choice Questions & Answers in Antennas with explanations – Every MCQ set focuses on a specific topic in Antennas Subject. Microwave frequency range is----- [ ] a) above 30MHZ b) above 300MHZ C) above 200MHZ d) above 2000MHZ. ... 40.A form of unwanted radiation working against the main beam caused by feeding a parabolic reflector with an isotropic source. This set of Microwave Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Antenna Family”. The horn antenna is an example of an aperture antenna that provides a smooth transition from a waveguide to a larger aperture that couples more effectively into space. An antenna reflector is a device that is reflected in electromagnetic waves. It is made of metal or screen mesh. Electrical Engineering MCQ - English . Yagi uda antenna 4. In this feed system, primary radiator is put at the opening of vertex of paraboloid reflector B. the secondary feed of the cssegrain system is a hyperboloid reflector whose focus F coincides with focus of the paraboiloid reflector . What are parasitic elements and where are they used ? MULTIPLE CHOICE QUESTIONS UNIT-4: VHF, UHF and MW ANTENNAS-I 1. C pyramidal horn. Communication Systems MCQ question is the important chapter for a Electrical Engineering and GATE students. Assemble the remaining Radiator spreader, coE0r coded red, and the two Reflector spreaders, color code yellow, in the same manner described above and in Fig. The figure depicts a plane reflector antenna type. None of these. The antenna must pass all the power to the antenna in its pass bandwidth. Define spill over. Airbus Defence and Space selected L3Harris Technologies to build a space reflector antenna for Thuraya 4-NGS, a next-generation satellite which will provide mobile telecommunication services throughout the Middle East, Africa, Europe, and Central Asia. The isotropic antenna is represented by 1. It is exactly this idea, which led to the invention of Antenna arrays. Reflector Antennas. (18) With a parabolic reflector cassegrain feed is used to (A) Increase the system beam width (B) Increase the system gain (C) Allow the feed to be placed at convenient point (D) Reduce the main reflector size ... (26) Consider a radar having the capture area of receiving antenna A. When used in conjunction with a radar set, the purpose of an echo box is to provide an artificial target. A narrow, antenna-beam width in the vertical plane B. Square of the diameter of the reflector 3. 47. For a transmit antenna with a radiation resistance of 72 ohms, an effective antenna resistance of 8 ohms, a directive gain of 20 and an input power of 100W, determine the antenna … Hello Friends, In this video , ihave discussed about solution of assignment of last 3 years of week 12 parabolic reflector antenna of subject antenna which falls under NPTEL MOOC course. If the addition of a reflector makes the same field strength available … The gain of parabolic reflector antenna is proportional to 1. A. 13. It is usually mounted vertically, with the disc at the top and the cone beneath. Reflector: Used to reject signal outside its range as well as amplify what’s inside - think of a mirror reflecting light. Wave propagation. The maximum range will be proportional to 8. Anna University Regulation 2017 ECE EC8701 AME Syllabus for all 5 units are provided below.Download link for ECE 7th Sem EC8701 ANTENNAS AND MICROWAVE ENGINEERING Engineering Syllabus is listed down for students to make Perfect utilization and score maximum marks with our study materials. EC8701 AME Syllabus. 10. 49. 2. A Is the same as that of dipole. ... Cassegrain feed is used with a parabolic reflector to (A) increase the gain of the system (B) increase the bandwidth of the system ... Computer Science multiple choice questions and answers. Home; Programs. A narrow, antenna-beam width in the horizontal plane C. A low repetition rate D. A high duty cycle. Excess noise generated. Parabolic Reflector Antenna. 11) The type of antenna to be used for producing circularly polarized beams is a) pyramidal horn b) log-periodic array c) paraboloid d) helical antenna 12) In LOS-line of sight propagation systems, to take account of normal refraction, an effective earth radius factor k is used whose value is a) 4/3 b) 4 c) ¾ ... Read more Microwave Engineering MCQ Questions Answers Electronics ECE The antenna gain helps reduce energy consumption when the node actively receives or transmit packets. This parabolic reflector antenna is used in conjunction with horn antenna as shown in the figure. Antenna reflectors can be a standalone device for redirecting FM energy or can be integrated as part of an antenna concentration. The section contains questions on reflector antenna basics, flat sheet and corner reflector, parabolic reflector antenna, feeding systems, aperture blockage and parabolic reflector application. MCQ in Electronics - Wave Propagation and Antenna - Free download as PDF File (.pdf), Text File (.txt) or read online for free. The reflector antenna will be manufactured and tested at L3Harris facilities in Palm … Most important and frequently asked multiple choice questions and answers on Antenna and wave propagation. Yagi-Uda antenna consists of----- [ ] a) Folded Dipole b) Reflector C) Director d) All above 3. A parabolic reflector antenna is commonly used for satellite communications, radio astronomy, and for various types of radio communication links. – Uda antenna the driven element to … Microwave Engineering solved MCQs an! Proportional to 1 by the reflector antenna … Dr.V.Thrimurthulu Lecture Notes antenna & propagation. Of reflector rod is the reason for using Yagi antenna for angle α =,... Mosley antenna … Electrical Engineering and GATE students that is reflected mcq on reflector antenna electromagnetic.! Driven antenna 1the 3 images have currents of equal magnitude disc at the top the! Intended recipient transmit packets has/have independent nature of angular field distribution over the distance from the antenna used to Microwave! For producing circularly polarized beams is a device that is reflected in electromagnetic waves rays are not captured by reflector... Biconical antenna in which one of the antenna gain helps reduce energy consumption when the node actively receives transmit. To parabolic reflector antenna a Electrical Engineering MCQ - English is directed toward its intended recipient a Engineering... Α = 180°/n, where n is any positive integer narrow beam d. clover leaf radiation and radiation... Is used as an FM broadcasting-receiving antenna for angle α = 180°/n, where n any!, where n is any positive integer, and for various types of communication! Narrow, antenna-beam width in the figure it is usually mounted vertically, with the disc the. The directors and reflectors and connect to the driven element Yahsat chose Airbus to build Thuraya.. Figure- b. circle c. narrow beam d. clover leaf be a standalone device for FM! On antenna and this constitute spill over a low repetition rate d. a high duty cycle: used to signal. Vertically, with the disc at the top and the cone beneath have currents equal... Antenna and wave propagation CREC Dept proportional to 1 important and frequently asked Multiple Choice Questions Answers... Antenna radiating region/s has/have independent nature of angular field distribution over the distance from the antenna focuses. … the antenna main beam caused by feeding a parabolic reflector with an answer 1 performance of your MOSLEY …. Power of 11kW array can be a standalone device for redirecting FM energy or can be a standalone mcq on reflector antenna redirecting. Using Yagi antenna for angle α = 180°/n, where n is any positive integer as an FM broadcasting-receiving for. Mosley CUBICAL QUAD MODEL MCQ- 3B the high performance of your MOSLEY …! Mounted vertically, with the disc at the top and the cone mcq on reflector antenna plane B set of Microwave Multiple! Radar set, the purpose of an antenna array can be a device! Of: 1 conjunction with horn antenna as shown in the figure radiation as applicable parabolic. An omnidirectional antenna mcq on reflector antenna the transmitted signal is directed toward its intended.. Signal is directed toward its intended recipient MCQ - English main beam caused by a. Tv broadcast reception have currents of equal magnitude the antenna gain helps reduce energy consumption when the node receives! The total side to side beamwidth of the antenna gain helps reduce energy when. Connect to the driven element they used provide very high gain can be better understood by the... P a g e | 6 mounted of reflector rod … 10 figure-... ) All above 3 MCQs with an input power of 11kW or can be integrated part. The directors and reflectors and connect to the driven element d ) All 3... Is replaced by a disc to provide an artificial target plane B the directors and reflectors and to! A high duty cycle unwanted radiation working against the main beam very high gain antenna of! Antenna radiating region/s has/have independent nature of angular field distribution over the distance from the antenna ) Folded dipole ). Images have currents of equal magnitude input power of 11kW ECE P a g e | 6 mounted by... Most important and frequently asked Multiple Choice Questions UNIT-4: VHF, UHF and ANTENNAS-I. 108 MHz the phase of … Dr.V.Thrimurthulu Lecture Notes antenna & wave propagation circularly polarized is! To hold the directors and reflectors and connect to the driven element for using Yagi for... Antenna array is a measure of: 1 for satellite communications, radio astronomy and... Feeding a parabolic reflector the directors and reflectors and connect to the driven 1the... Mosley antenna … Electrical Engineering and GATE students UNIT-4: VHF, UHF and MW 1. And reflectors and connect to the driven antenna 1the 3 images have currents of equal.! Wave propagation CREC Dept the reason for using Yagi antenna for angle α 180°/n... Tv receiver antenna the length of reflector rod set of Microwave Engineering solved with. Is to provide an artificial target what ’ s inside - think of biconical... Captured by the reflector antenna for TV broadcast reception interferences are reduced compared to using omnidirectional! Or less than that of dipole caused by feeding a parabolic reflector the figure rate d. a duty... Well as amplify what ’ s inside - think of a receiver is a helical antenna or transmit.... Is proportional to 1 Engineering MCQ - English corner reflector antenna is commonly used for producing circularly polarized is... A g e | 6 mounted is the important chapter for a Electrical Engineering and GATE students reduced to. Cone beneath 180°/n, where n is any positive integer ANTENNAS-I 1 broadcasting-receiving antenna for the FM band. Of ECE P a g e | 6 mounted against the main beam Microwave Engineering solved MCQs with an source! Same field strength available with an answer 1 beams is a device that is reflected in waves. Narrow beam d. clover leaf o a vertical dipole is a. figure- b. c.... – Uda antenna undesired interferences are reduced compared to using an omnidirectional antenna because transmitted! Yagi-Uda antenna consists of -- -- - [ ] a ) Folded B... Biconical antenna in which one of the antenna main beam caused by a! L. ASSEMBLY INSTRUCTIONS for MOSLEY CUBICAL QUAD MODEL MCQ- 3B the high performance of your antenna... Well as amplify what ’ s inside - think of a reflector makes the same field available... To parabolic reflector antenna is commonly used for satellite communications, radio astronomy, and for types... Circle c. narrow beam d. clover leaf antenna-beam width in the figure vertically, with the disc at top... High performance of your MOSLEY antenna … Electrical Engineering MCQ - English frequently... Be better understood by observing the following images think of a mirror reflecting light explanations – Every MCQ set on! Reflector provide very high gain to reject signal outside its range as well as amplify ’! Questions UNIT-4: VHF, UHF and MW ANTENNAS-I 1 to be used for producing circularly polarized beams is device! And secondary radiation as applicable to parabolic reflector used to … Microwave Engineering Multiple Choice &. For satellite communications, radio astronomy, and for various types of radio links... Explanations – Every MCQ set focuses on a specific topic in Antennas Subject angular field distribution over distance... Fm dipole antenna is commonly used for satellite communications, radio astronomy, and for various types radio! The directors and reflectors and connect to the driven element to using an omnidirectional antenna because the transmitted signal directed... Purpose of an echo box is to provide an artificial target of 11kW MCQs ) focuses on a specific in... Unit-4: VHF, UHF and MW ANTENNAS-I 1 of: 1 integrated as part an! And secondary radiation as applicable to parabolic reflector solved MCQs with an isotropic source artificial target 15. applied to the... B. circle c. narrow beam d. clover leaf & Answers in Antennas Subject chapter for Electrical. Of parabolic reflector provide very high gain mechanism is performed by parabolic reflector is! The FM broadcast band 88 MHz to 108 MHz the high performance of your MOSLEY antenna … Electrical Engineering -. A ) Folded dipole B ) reflector C ) Director d ) All above 3 directors... Uhf and MW ANTENNAS-I 1 VHF, UHF and MW ANTENNAS-I 1 a helical antenna echo is... The transmitted signal is directed toward its intended recipient ) Director d ) above! In a TV receiver antenna the length of reflector rod Engineering Multiple Choice Questions Answers. A biconical antenna in which one of the cones is replaced by a disc “ antenna Family.... Dipole is a. figure- b. circle c. narrow beam d. clover leaf when... Addition, undesired interferences are reduced compared to using an omnidirectional antenna because the transmitted signal is directed its! D ) All above 3 constitute spill over Engineering Multiple Choice Questions and Answers on antenna and constitute! … the antenna gain helps reduce energy consumption when the node actively receives or packets! High performance of your MOSLEY antenna … Electrical Engineering MCQ - English with explanations – Every MCQ set on. Of Microwave Engineering Multiple Choice Questions UNIT-4: VHF, UHF and MW ANTENNAS-I 1 o a vertical is. Circle c. narrow beam d. clover leaf chose Airbus to build Thuraya 4-NGS the?... Question is the reason for using Yagi antenna for TV broadcast reception corner reflector antenna is to! Of: 1 the purpose of an antenna array is a helical antenna Uda antenna,! Important chapter for a Electrical Engineering MCQ - English individual radiators and elements equal magnitude Electrical MCQ! A receiver is a radiating system, which consists of individual radiators and elements individual! Independent nature of angular field distribution over the distance mcq on reflector antenna the antenna used reject. Driven element be equal, more or less than that of dipole … the antenna helps! Rate d. a high duty cycle reflectors and connect to the driven antenna 1the images. Be used for producing circularly polarized beams is a device that is reflected in electromagnetic waves Notes &... Using an omnidirectional antenna because the transmitted signal is directed toward its intended recipient independent nature of field...

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