MCQ in Radiation and Wave Propagation Part 6 – Answers

Below are the answers key for the Multiple Choice Questions in Radiation and Wave Propagation Part 6.

251. Radio horizon

252. sky waves

253. skipping

254. Electromagnetic waves

255. D layer

256. ghosting

257. MF and HF

258. Kennely-Heavisides

259. critical frequency

260. critical angle

261. wavefront

262. virtual height

263. maximum usable frequency

264. E field

265. optimum working frequency

266. skip distance

267. Pedersen ray

268. EMI

269. quiet zone

270. RFI

271. any of these

272. increase antenna height

273. 142 dB

274. 53.2 mi

275. Fading

276. HF

277. they are very reliable

278. direct wave

279. 12 GHz

280. sky wave

281. affected by the solar cycle

282. 3 to 30 MHz

283. to prevent sky-wave and upper ray interference

284. 300 kHz to 3 MHz

285. refracted

286. the Faraday effect

287. frequency diversity

288. reflection coefficient

289. solar flux

290. Maunder period

291. tilting

292. Troposphere

293. LUF

294. skip zone

295. diurnal variation

296. Any of these

297. polarization fading

298. one-third

299. temperature inversion

300. duct

Questions and Answers in Radiation and Wave Propagation Series

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

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