Noise Characteristics of Receivers MCQ

Test your knowledge with important Noise Characteristics of Receivers MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Noise Characteristics of Receivers MCQs at Bissoy

• If the received power at the antenna terminals is Si=-80 dBm and the output noise power is -110 dBm then the output signal to noise ratio is given by:
  ক

  30 dB

  খ

  -30 dB

  গ

  35 dB

  ঘ

  -35 dB
• A receiver system is operating at a bandwidth of 1 MHz and has a total system noise temperature of 762 K. then the output noise power is:
  ক

  -110 dBm

  খ

  -234 dBm

  গ

  -145 dBm

  ঘ

  -124 dBm
• If the received power at antenna terminals is -80dBm, and if the input noise power is -115 dBm, then the input SNR is:
  ক

  45 dB

  খ

  -195 dB

  গ

  -35 dB

  ঘ

  35 dB
• Antenna noise temperature of a system is 210 K, noise temperature of transmission line is 123 K, loss of a transmission line connecting the antenna to receiver is 1.41 and noise temperature of the receiver cascade is 304 K. then the total system noise temperature is:
  ক

  840 K

  খ

  762 K

  গ

  678 K

  ঘ

  1236 K
• If a receiver is operating at a bandwidth of 1 MHz and has antenna noise temperature of 210 K, then the input noise power is:
  ক

  -90 dBm

  খ

  -115 dBm

  গ

  -56 dBm

  ঘ

  -120 dBm
• Given that the antenna efficiency is 0.9, equivalent brightness temperature is 200 K; physical temperature is 300 K, noise temperature of an antenna is:
  ক

  220 K

  খ

  210 K

  গ

  240 K

  ঘ

  None of the mentioned
• If a transmission line connecting the antennas to the receiver has a loss of 1.5 dB, given the physical temperature is 270C, noise equivalent temperature is:
  ক

  123 K

  খ

  145 K

  গ

  345 K

  ঘ

  234 K
• In a receiver, if the noise figure of the mixer stage in the receiver is 7 dB, then the equivalent noise temperature is given that the receiver is operating at 290 K:
  ক

  1163 K

  খ

  1789 K

  গ

  1000 K

  ঘ

  1234 K
• Equivalent noise temperature of a transmission line connecting the antenna to the receiver is:
  ক

  TP (LP-1)

  খ

  TP (LP + 1)

  গ

  TP/ (LP-1)

  ঘ

  TP / (LP + 1)
• The noise power will determine the maximum detectable signal level for a receiver.
  ক

  True

  খ

  False