MCQs in Microwave Communications Part IV - Answers

Answers key for the Compiled MCQs in Microwave Communications Part 4 of the series as one topic in Electronic System and Technologies (Communications Engineering) in the ECE Board Exam.

Answers in Microwave Communications - MCQs Part IV

Below are the answers key for the Multiple Choice Questions in Microwave Communications - MCQs Part 4.

151. Prevent oscillations

152. Is not a good low-level amplifier because of noise

153. 2839.31 W

154. Generating SHF signals

155. Cross-field amplifier

156. Frequency pushing

157. 4.92 GHz

158. A hollow tube that carries HF

159. Has a greater bandwidth

160. Frequency pulling

161. Post-tuning drift

162. -60 dBm

163. 11.6 m

164. Both a and b

165. 8500 km

166. -20 dBm

167. Combiner

168. 2 GHz

169. 10 W

170. Prevent mode-jumping

171. Phase velocity

172. All of the above

173. 17 m

174. 140 dB

175. Baseband repeater

176. 6.575 - 6.875 GHz

177. Transverse-magnetic

178. Should not have long horizontal runs

179. 205 K

180. To compensate for discontinuities at the join

181. Suitable for use as a microwave switch

182. Lower attenuation

183. Allows one antenna to feed two separate microwave transmitters and receivers at the same time

184. 140.90 dB

185. Because it cannot operate at room temperature

186. Provide attenuation

187. Radome

188. Hollow metal conductors used to carry high-frequency current

189. Backward wave oscillator (BWO)

190. Ensure that the electors will orbit around the cathode

191. -82 dBm

192. 4.3 GHz

193. 19.29

194. VTM

195. Through electromagnetic and electrostatic fields in the walls of the waveguide

196. Prevent the oscillations that occurs in two-cavity klystrons

197. Reduce the axial velocity of the RF field

198. Isolator

199. To improve the noise performance

200. Rectangular waveguide

Online Questions and Answers Series

Following is the list of Practice Exam Test Questions in this brand new series:

Microwave Communications MCQs
PART 1: MCQs from Number 1 – 50                        Answer key: PART I
PART 2: MCQs from Number 51 – 100                   Answer key: PART II
PART 3: MCQs from Number 101 – 150                 Answer key: PART III
PART 4: MCQs from Number 151 – 200                 Answer key: PART IV
PART 5: MCQs from Number 201 – 250                 Answer key: PART V
PART 6: MCQs from Number 251 – 300                 Answer key: PART VI
PART 7: MCQs from Number 301 – 350                 Answer key: PART VII
PART 8: MCQs from Number 351 – 400                 Answer key: PART VIII
PART 9: MCQs from Number 401 – 450                 Answer key: PART IX
PART 10: MCQs from Number 451 – 500                 Answer key: PART X

Complete List of MCQs in Communications Engineering per topic


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