# MCQs in Noise Part IV - Answers

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

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

151. 6 dB

152. A loss of one-half of the power

153. 1000 volts/volt

154. bel

155. Internal

156. Shot

157. 0.01

158. 2.23 & 194°K

159. Industrial

160. Unity

161. Atmospheric

162. Transmission Level Point

163. 50 watts

164. Transmit time

165. 43.3

166. 4 dB

167. 30

168. Predictable in character

169. 1.086

170. 174°K

171. 0.1151

172. 40 dBm

173. 8.14 uV

174.Unchanged

175. Input noise voltage

176. Noise

177. dB

178. External

179. Industrial

180. 6 dB

181. dBV

182. dB

183. 290 K

184. Extraterrestrial

185. Partition noise

186. Lightning

187. All of the above

188. Its temperature

189. In the channel

190. a and b

191. All of the above

192. Flicker noise

193. 500 MHz

194. A shot duration pulse

195. 23

196. –90 dBm

197. 90 degrees

198. 50

199. Impulse noise

200. S/N ratio

### Online Questions and Answers Series

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

Noise 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

### Complete List of MCQs in Communications Engineering per topic

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