Yagi Uda Antenna Question & AnswersJune 1, 2022 By WatElectronics This article lists 40 Yagi Uda Antenna MCQs for engineering students. All the Yagi Uda 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 the Yagi Uda Antenna.An antenna is an electro-mechanical device designed for digital or electromagnetic communication purposes. They are classified into multiple types such as log periodic type antennas, wire type antennas, traveling type wave antennas, and more. An antenna designed with a narrow band-based functionality is a yagi antenna, a Yagi Uda antenna. The scientists who discovered YU antennae are Hidetsugu Yagi and Shintaro Uda. The components of the YU antenna include transmitters, receivers, and passive-type radiators.The advantages of the Yagi antenna include light weight, simple construction, and less cost. The disadvantage of Yagi-antenna is noisy and experiences atmospheric effects. The applications of the Yagi antenna include radar antennas, television antennas, and point-to-point fixed communication.1). A Yagi Uda Antenna is a ____ type of antenna? Directional Antenna Beam Antenna Non-directional Antenna Both a and b HintOne way radiation.2). A Yagi Uda Antenna comprises of ____ number of parallel resonant antenna elements? 1 2 3 Multiple HintCascaded stages.3). In a parallel resonant antenna type elements in a YU antenna allows metal rods to act as ___? Half-wave dipoles Full wave dipoles Semi-wave dipoles Both b and c HintBoth positive and negative wave.4). Which of the following are the components of YU antenna? Transmitter Receiver Passive radiators All the above HintDependent components.5). A passive type radiator with zero power is called ___? Reflector Lighter Sonor None of the above HintHit and return.6). Which of the following scientist discovered YU antenna? Shintaro Uda Hidetsugu Yagi Charles Yagi Both a and b HintJapan scientists.7). How many director components does a modern high gain based UHF Yagi type antenna comprises of? 17 21 13 41 HintLeast number.8). How many reflector components does a modern high gain based UHF Yagi type antenna comprises of? 17 1 13 41 HintLeast number.9). A modern high gain UHF type Yagi antenna is designed with ___ number of rods? 1 2 3 4 HintEven number.10). Which of the following is the shape of modern high gain UHF type Yagi antenna? Corner reflector Rectangle reflector Circular reflector Both b and c HintEdges also called?Yagi Uda Antenna Quiz Questions and Answers11). On which of the following frequency bands a Yagi antennas are designed? HF VHF UHF All the above HintVariable frequencies.12). A Yagi antenna has ___ range of gain? Moderate to high Low to moderate Low to high Zero to moderate HintGood antenna efficiency occurs at which range?13). Which of the following is the front to back ratio gain range of Yagi antenna? 0-20dB 0-30dB 0-50dB 0-60dB HintMinimum range value.14). A Yagi antenna radiates in ____ polarized form? Linear Non-linear Bi-linear None of the above HintInput=output value.15). Which of the following are the advantages of Yagi antenna? Light weight Easy in construction Less cost All the above HintThey are not expensive, simple design, etc.16). Which of the following are the applications of Yagi antenna? Radar antennas Television antennas Point to point fixed communication All the above HintUsed in different antennas & fixed communication.17). Which of the following are the typical spacing between the components of Yagi antenna? 1/10 ¼ 1/8 Both a and b Hint2 spacings.18). On which position end, reflector component in Yagi antenna is designed on? Left Center Right None of the above HintWest direction.19). On which position, end half-wave driven element component in Yuga antenna is designed on? Left Center Right None of the above HintGateway.20). On which position, end director element component in Yuga antenna is designed on? Left Center Right None of the above HintEast direction.Yagi Uda Antenna Interview Questions and Answers21). Which of the following is the frequency range of Yagi antenna? 30MHz to 3GHz 40MHz to 4GHz 50MHz to 3 GHz 3MHZ to 3GHz HintMinimum range.22). The center rod on which elements are mounted in an Yagi antenna is called ____? Bloom Boom Candid Both a and c HintConnector.23). Which of the following is the length of the driven element of a Yagi antenna? 0.4 lamda to 0.5 lamda 0.55 lamda to 0.58 lamda 0.45 lamda to 0.65 lamda 10.4 lamda to 10.5 lamda HintMinimum range.24). Which of the following is the length of the reflector of a Yagi antenna? 0.4 lamda to 0.5 lamda 0.55 lamda to 0.58 lamda 0.45 lamda to 0.65 lamda 10.4 lamda to 10.5 lamda HintOdd range.25). Which of the following is the length of the director 1 of a Yagi antenna? 0.45 lamda 0.40 lamda 0.35 lamda 0.12lamda HintOdd value.26) . Which of the following is the length of the director 2 of a Yagi antenna? 0.45 lamda 0.40 lamda 0.35 lamda 0.12lamda HintEven value.27). Which of the following is the length of the director 3 of a Yagi antenna? 0.45 lamda 0.40 lamda 0.35 lamda 0.12lamda HintOdd value.28). Which of the following is the spacing between the directors of a Yagi antenna? 0.2 lamda 0.35 lamda 0.125 lamda 0. 8 lamda HintEven value.29). Which of the following is the spacing between the reflector to dipole of a Yagi antenna? 0.2 lamda 0.35 lamda 0.125 lamda 0. 8 lamda HintOdd value.30). Which of the following is the spacing between the dipole to director of a Yagi antenna? 0.2 lamda 0.35 lamda 0.125 lamda 0. 8 lamda HintOdd value.Yagi Uda Antenna MCQs for Exams31). Which of the following are the disadvantages of Yagi-antenna? Noisy Atmospheric effects Occupies large space Both a and b Hint2 disadvantages.32). Which of the following are the types of radiation pattern in an yagi antenna? Isotropic Omni directional Directional All the above HintMore than 2 types.33). Which of the following type of yagi antenna radiates uniformly in all directions? Isotropic Omni directional Directional Hemispherical Hint360 degree radiation.34). Which of the following type of yagi antenna radiates in one direction? Isotropic Omni directional Directional Hemispherical HintSingle direction.35). Which of the following type of yagi antenna radiates in either of half, half direction? Isotropic Omni directional Directional Hemispherical HintRadiates in either of half, half direction.36). Which of the following is the power input value given to Yagi antenna? 75 mA 60mA 65mA 30mA HintMaximum value.37). Which of the following is the communication range of yagi antenna? 2 to 3 miles 3 to 5 miles 5 to 8 miles 9 to 10 miles HintOdd range.38). When length of yagi antenna is increased the gain ____? Increases Decreases Zero None of the above HintDirectly proportional.39). Which of the following is the frequency range of yagi antenna? 3MHz to 300 GHz 2MHz to 300GHz 6MHz to 500GHz 10GHz to 900GHz HintOdd range.40). __ is required for an antenna to operate without any shock? Earthing Powering Breaking None of the above HintNeutral power.For More MCQsAntenna Question and Answers Please fill in the comment box below. Time is Up! Time's up
