Wave Circuits MCQ

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

• Equivalent noise temperature associated with an arbitrary white noise source is:
  ক

  N0/GKB

  খ

  N0

  গ

  N0/ kB

  ঘ

  None of the mentioned
• Excess noise ratio is defined as the ratio of generator noise to the noise associated with room temperature
  ক

  True

  খ

  False
• The noise power associated with a two port network modeled as thevinin equivalent is:
  ক

  kTB

  খ

  k/TB

  গ

  TB/ K

  ঘ

  None of the mentioned
• An amplifier has a noise equivalent temperature of 170 K. If the amplifier is used with a source having an equivalent noise temperature of TS=450 K, the output noise power of the amplifier is:
  ক

  -50 dBm

  খ

  -60 dBm

  গ

  -60.7 dBm

  ঘ

  -55 dBm
• The Y factor of an amplifier obtained by measuring the noise figure at the temperatures 77 K and 290 K is 2.7 db. Then the equivalent noise temperature of the amplifier is:
  ক

  100 K

  খ

  150 K

  গ

  170 K

  ঘ

  None of the mentioned
• An X- band amplifier has a gain of 20 dB and a gain of 1GHz bandwidth. Noise figure of the amplifier is -62 dBm at 290 K and -64.7 dBm at 77 K. then the Y factor of the amplifier is :
  ক

  3 dB

  খ

  6.4 dB

  গ

  2.7 dB

  ঘ

  5.6 dB
• The most insignificant form of noise is:
  ক

  Plasma noise

  খ

  Quantum noise

  গ

  Shot noise

  ঘ

  Flicker noise
• noise is caused by random motion of charges in ionized gas.
  ক

  Plasma noise

  খ

  Quantum noise

  গ

  Thermal noise

  ঘ

  Flicker noise
• Flicker noise occurs in solid-state components and vacuum tubes.
  ক

  True

  খ

  False
• ________ noise occurs due to the random fluctuation of charge in an electron tube.
  ক

  Flicker noise

  খ

  Shot noise

  গ

  Thermal noise

  ঘ

  White noise
• The type of noise caused by vibration of bound charges is called:
  ক

  Thermal noise

  খ

  Shot noise

  গ

  Flicker noise

  ঘ

  None of the mentioned