MCQ in Antennas Part 5 – Answers

Below are the answers key for the Multiple Choice Questions in Antennas Part 5.

201. Acts as an antenna array

202. Rhombic antenna

203. Log-periodic

204. Horn

205. Protection of personnel working underneath

206. To prevent re-radiation of the local oscillator

207. Marconi

208. Protection of personnel working underneath

209. High gain

210. Helical

211. Isotropic antenna

212. Effective height

213. Allow the feed to be placed at a convenient point

214. Reduce the bulk of the lens

215. Circular polarization

216. Useful as a HF receiving antenna

217. Log-periodic

218. Connect an inductor in series with the antenna

219. A vertical antenna which is a quarter-wavelength long

220. Must have a vertical receiving antenna for the best reception

221. Has zero dc resistance to ground

222. Both B and C

223. Decrease

224. The antenna’s resonant frequency will increase

225. The field strength varies inversely as the distance from the antenna

226. Both a and b

227. Skywave propagation

228. Doubled

229. Bidirectional radiation pattern in the horizontal plane

230. Vertical quarter-wavelength rod

231. 4.68 ft

232. The numerical ration relating the radiated signal strength of an antenna to that of another antenna

233. The frequency range over which an antenna can be expected to perform well

234. ¼ λ

235. An antenna capable of being used on more than one band because of the presence of parallel LC networks

236. It may be used for multi-band operation

237. It will radiate harmonics

238. The traps form a high impedance to isolate parts of the antenna

239. An element that receives its excitation from mutual coupling rather than from a transmission line

240. By currents induced into the element from a surrounding electric field

241. 20, 000 W

242. 50

243. It is about 5% longer

244. It is about 5% shorter

245. An equivalent resistance that would dissipate the same amount of power as that radiated from an antenna

246. The locations of the antenna with respect to nearby objects and the length/diameter ratio of the conductors

247. At the ends

248. Improved radiation efficiency

249. 6.4 degrees

250. 0.906

Questions and Answers in Antennas Series

Following is the list of multiple choice questions in this brand new series:

Complete List of MCQ in Communications Engineering per topic

Related Content

MCQ in Communications Engineering Series | ECE Board Exam

DaysHoursMinSecThis offer has expired! SubscribePREMIUM PROMO: Remove Ads!! Get Freebies!!! and Get EXTRA MONTHS before Time EXPIRED! In Preparation for the ECE Board Exam make sure to expose yourself and familiarize in each and every questions compiled here taken from various sources including past Board Questions in Communications Engineering field (Electronics Systems and Technologies). In the actual board, you have to answer 100 items in Electronic Systems and Technologies within 5 hours. You have to get at least 70% to pass the subject. Electronic Systems and Technologies is 30% of the total 100% Board Rating along with Mathematics (20%), General

MCQ in Professional Education Practice Drills Part 7 | Licensure Exam for Teachers

DaysHoursMinSecThis offer has expired! SubscribePREMIUM PROMO: Remove Ads!! Get Freebies!!! and Get EXTRA MONTHS before Time EXPIRED! This is the ProfEd Practice Drills, Multiple Choice Questions in Professional Education part 7 as one coverage of Licensure Examinations for Teachers (LET). The exam is divided into two classifications. First is the elementary level exam which covers topics from General Education (GenEd) 40% and Professional Education (ProfEd) 60%. Secondly is the secondary level which covers GenEd 20%, ProfEd 40%, and area of specialization 40%. I assume you are looking for a reviewer that will help you achieve your goal to become a

MCQ in Professional Education Part 19 | Licensure Exam for Teachers Review

DaysHoursMinSecThis offer has expired! SubscribePREMIUM PROMO: Remove Ads!! Get Freebies!!! and Get EXTRA MONTHS before Time EXPIRED! This is the LET ProfEd Reviewer, Multiple Choice Questions in Professional Education part 19, as one Licensure Examinations for Teachers (LET) coverage. The exam is divided into two classifications. First is the elementary level exam, which covers topics from General Education (GenEd) 40% and Professional Education (ProfEd) 60%. Secondly is the secondary level, which covers GenEd 20%, ProfEd 40% and area of specialization 40%. I assume you are looking for a reviewer that will help you achieve your goal of becoming a professional

MCQ in Professional Education Part 9 | Licensure Exam for Teachers

DaysHoursMinSecThis offer has expired! SubscribePREMIUM PROMO: Remove Ads!! Get Freebies!!! and Get EXTRA MONTHS before Time EXPIRED! These is the Multiple Choice Questions in Professional Education Part 9 as one coverage of Licensure Examinations for Teachers (LET). The exam is divided into two classifications. First is the elementary level exam which covers topics from General Education (GenEd) 40% and Professional Education (ProfEd) 60%. Secondly is the secondary level which covers GenEd 20%, ProfEd 40%, and area of specialization 40%. I assume you are looking for a reviewer that will help you achieve your goal to become a professional License teacher