Horn Antenna Question & Answers August 22, 2022 By WatElectronics This article lists 50 Horn Antenna MCQs for engineering students. All the Horn Antenna Questions & Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up on the fundamentals of Horn Antenna. An antenna is a electronic device that transmits and receives the signals from two different ends or same ends. They are available in different types based on its properties, one among them is horn antenna. An horn antenna is designed to overcome the most reflected wave at open end, poor waveguide radiating based ability and minimum impedance match. Horn antenna, microwave horn antenna, and feed horns antenna is a type of aperture based antenna. These antennas are designed using microwave frequencies and UHF frequencies and operate at 300MHz to 30GHz. E-plane, H-plane, sectorial antenna, conical horn antenna, exponential horn antenna, pyramidal horn antenna are the class of horn antennas. The advantages of exponential type horn antenna is broad BW, minimum internal reflection and impedance constant maintenance. The disadvantages of horn antenna is antennas directivity and flare angle are dependent, sufficient dimensions, and heavy size. The applications of Horn antennas are astronomical studies, microwave appliances and parabolic reflectors. 1). ____ is a type of aperture based antenna? Horn antenna Lens antenna Wire antenna Reflector antenna None Hint 2). Horn antennas are designed for which frequencies? Microwave UHF X-ray Both a and b None Hint 3). Which of the following is the shape of end side of horn antenna? Widened Horn Narrow Both a and b None Hint 4). Which of the following is the frequency of operation of horn antenna? 300MHz to 30GHz 300Hz to 30MHz 400MHz to 30GHz 300MHz to 40GHz None Hint 5). Horn antennas assist in _____ type of antennas? Parabolic antennas Directive antennas Flat antennas All the above None Hint 6). Which of the following are the benefits of horn antenna? Minimum SWR Broad BW Easy adjustment All the above None Hint 7). SWR is abbreviated as ____? Standing wave ratio Standard wave radio Standard win ratio None of the above None Hint 8). A horn antenna has a capacity to ____ the RF signal? Transmit Receive Block Both a and b None Hint Read more about RF Transreceiver Module 9). Which of the following are the combination of usage in Horn antenna? Waveguide feeds Direct radio waves Narrow beam All the above None Hint 10). Which of the following is the shape of horn antenna? Conical Rectangular Square All the above None Hint 11). For horn antenna to work efficiently, the size of antenna must be ____for smaller wavelength? Minimum Maximum Wider Both a and c None Hint 12). Which of the following are types of Horn antennas? Pyramidal antennas Sectorial horn antenna E-plane All the above None Hint 13). Which of the following type of antenna is used for linearly radiating polarized radio waves? Pyramidal antennas Sectorial horn antenna E-plane H-plane None Hint 14). Flaring in pyramidal horn antenna is performed in _____ field vectors? Electric field Magnetic field Both a and b None of the above None Hint 15). In which of the following type of horn antenna, only one side of pair face is flared? Pyramidal antennas Sectorial horn antenna E-plane H-plane None Hint 16). A sectorial type of horn antenna is used for __ search area? Wider Narrow Broader None of the above None Hint 17). A sectorial type antenna is classified in to ___ types? E-plane antenna H-plane antenna EH plane antenna Both a and b None Hint 18). E-plane means___ field vector? Electric Elevated field Magnetic field None of the above None Hint 19). H-plane means___ field vector? Electric Elevated field Magnetic field None of the above None Hint 20). A circular type cross section type horn antenna is also called? Conical antenna Pyramidal antennas Sectorial horn antenna E-plane None Hint 21). A circular type horn antenna is of ___ shape? Conical Biconical Triconical Both a and b None Hint 22). ____ type of antennas are also called scalar horn antennas? Conical antenna Pyramidal antennas Sectorial horn antenna Exponential antenna None Hint 23). The impedance of exponential type antenna is _____? Constant Low Zero None of the above None Hint 24). Which of the following are the advantages of exponential type horn antenna? Has broad BW Minimum internal reflection Impedance is constant All the above None Hint 25). Which of the following type of antenna has grooves slots along transverse axis of antenna? Conical antenna Pyramidal antennas Corrugated horn antenna Exponential antenna None Hint Horn Antenna MCQs for Interviews 26). Which of the following are the characterizes of corrugated horn antenna? Cross type polarization Minimum side lobes Small design features All the above None Hint 27). The bandwidth of corrugated horn antenna has ___ BW? Wider Narrow Small Zero None Hint 28). Which of the following are the applications of corrugated horn antenna? Radio telescopes Satellites dishes Telephones Both a and b None Hint 29). Which of the following parameters are used for calculating antennas gain? Flare angle Aperture dimension Path difference All the above None Hint 30). The gain of pyramidal antenna is ____? Optimal Maximum Minimum Zero None Hint Horn Antenna MCQs for Quiz 31). Which of the following is the formula for horn antennas gain? 4 Pi A e / Lamda ^2 4 Pi A e / Lamda 4 Pi A / Lamda ^2 None of the above None Hint 32). Which of the following is the formula for conical type horn antenna? Pi d Lamda * 2 e A Pi d Lamda / 2 e A Pi d Lamda * 2 e^ A Pi / d Lamda * 2 e A None Hint 33). The shape of horn antennas radiation is ___ wave front? Spherical Cylindrical Square None of the above None Hint 34). Which of the following determines the radiation patterns of aperture plane of the horn antenna? E field M field EM field Both a and b None Hint 35). When the middle point length and the end point length of the apex point are not same then the phase of the horn antenna is? Increased Decreased Zero None of the above None Hint 36). When the middle point length and the end point length of the apex point are not same then the phase of the horn antenna is increased this phenomena is called? Phase error Amplitude error Frequency error All the above None Hint 37). Which of the following is the beam width of Horn antenna? 10:1 10:10 1:10 0:1 None Hint 38). Which of the following is the maximum beam width of horn antenna? 20:1 30:10 20:10 0:20 None Hint 39). Horn antennas are easy to attach to ___? Waveguide Coaxial type feeder Axial Both a and b None Hint 40). The performance of horn antenna is ____? Stable Unstable Non-linear Both b and c None Hint Horn Antenna MCQs for Students 41). A horn antenna has ___ type of lobes? Minor Major No lobes All the above None Hint 42). The reflections in horn antenna is ___? High Few Zero None of the above None Hint 43). The directivity of horn antenna is ____? High Few Zero None of the above None Hint 44). Which of the following are the applications of Horn antennas? Astronomical studies Microwave appliances Parabolic reflectors All the above None Hint 45). A pyramidal type horn antenna is also called ___? Rectangular type antenna Conical type horn antenna Sectorial type horn antenna Both a and b None Hint 46). Which of the following disadvantage does horn antenna overcomes? More reflected wave at open end Poor waveguide radiating based ability Minimum impedance match All the above None Hint 47). ___ is a hollow type tube, that propagates energy in to space when one end is excited and another end is opened? Waveguide Gain Tube None of the above None Hint 48). Which of the following are the disadvantages of horn antenna? Antennas directivity and flare angle are dependent Sufficient dimensions Heavy size All the above None Hint 49). A combination of parabolic reflector antenna and horn antenna is ____? Cass horn antenna Hog horn Triply folded horn type reflector All the above None Hint 50). Which of the following is the reflected angle of cass-horn antennas? 45 degrees up 45 degrees down 50 degrees up 50 degrees down None Hint For More MCQs Antennas Question & Answers. Loop Antenna Question & Answers. Yagi Uda Antenna Question & Answers. Please fill in the comment box below. Time's up
