MCQ in Noise Part 3 – Answers

(Last Updated On: April 25, 2020)

MCQ in Noise Part 3 | ECE Board Exam

Below are the answers key for the Multiple Choice Questions in Noise Part 3.

101. 0.326 millivolts

102. Arc discharges in electrical machines

103. Distant stars

104. Transit-time noise

105. Impulse noise voltage is independent of bandwidth

106. Unchanged

107. Input noise voltage

108. Atmospheric noise

109. Thermal agitation

110. 906 K

111. 30 MHz

112. NPR

113. Thunderstorms

114. Impulse noise

115. All of these

116. pWp

117. 8 MHz to 1.43 GHz

118. 50 dB

119. 0.4 A

120. 0.4 A

121. 0.5 femtowatts

122. Noise

123. 10 dB

124. 14 dB

125. 6 dB

126. Noise improvement factor

127. 0.05 microvolts

128. 800 Hz

129. 0.56 dB

130. 5 dB

131. Quantizing level

132. 290 Kelvin

133. 15 to 160 MHz

134. All of these

135. 7 dB

136. The interfering effect of other frequencies in a voice channel compared with a reference frequency of one kilohertz

137. 6 dB

138. 63

139. 12 dBm

140. 96.6 fW

141. 6 nA

142. Noise density

143. 50 dBm

144. Decreased by ½ its value

145. 7 dB

146. Space noise

147. 129 K

148. Lightning

149. -104 dBm

150. 11 years

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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