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MCQs in Modulation Part IV – Answers

(Last Updated On: September 10, 2019)

Answers in Modulation - MCQs Part IV

Below are the answers key for the Multiple Choice Questions in Modulation – MCQs Part 4.

151. Crossmodulation

152. Stray coupling is minimized

153. 4

154. Prevent the generation of spurious oscillations

155. Blocking dynamic range

156. RF amplifier, mixer, IF amplifier, AF amplifier

157. Filter ringing

158. IF amplifier

159. Better signal-to-noise-ratio

160. Low-level modulation

161. Ensuring good RF shielding between the transmitter

162. 3,000 Hz

163. A3C

164. In the receiver front end

165. Installing a filter at the receiver

166. F3E

167. The presence of a strong signal on a nearby frequency

168. Amplitude of the modulating tone and frequency of the carrier

169. Better rejection ratio

170. Bandwidth and noise figure

171. Undesired signals will reach the audio stage

172. FM receiver

173. Prevents any amplitude modulation of the IF signal

174. Loose

175. Multiplied by four

176. 2.4 kHz

177. Resistor

178. Avoid the requirement of neutralizing the stage

179. Rectifies and filters

180. All of these

181. Insulating enclosures around the receiver

182. Television

183. Approximately 1000 W

184. Limiter stage

185. Single sideband, suppressed carrier

186.  Approximately 2.5 to 1

187. Higher

188. Improvement in frequency stability of the oscillator

189. A3F

190. A network consisting of one inductor and two capacitors

191. With a reactance modulator on the oscillator

192. Installing resistive spark plugs

193. Transmitter’s output signal when the modulation is zero

194. Final IF amplifier, which also acts as a limiter stage

195. Discriminator

196. The loudest signal received is the only demodulated signal

197. Modulating the plate voltage of a class-C amplifier

198. High modulating frequencies

199. The modulation of an unwanted signal is heard on the desired signal

200. FM receiver

Online Questions and Answers Series

Following is the list of practice exam test questions in this brand new series:

Modulation 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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