Modulation Formats MCQ

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

• The digital transmission on implementation of polarization modulation which involves polarization characteristics of the transmitted optical signal is known as _____________
  ক

  Frequency shift keying

  খ

  Amplitude shift keying

  গ

  Phase shift keying

  ঘ

  Polarization shift keying
• _________ can potentially provide spectral conservation through the use of multilevel signalling.
  ক

  M-ary PSK

  খ

  MFSK

  গ

  ASK

  ঘ

  DFSK
• External modulation for ________ modulation format allows the most sensitive coherent detection mechanism.
  ক

  FSK

  খ

  DSK

  গ

  PSK

  ঘ

  ASK
• Eight level FSK and binary PSK yields an equivalent sensitivity.
  ক

  False

  খ

  True
• ___________ offers the potential for improving the coherent optical receiver sensitivity by increasing the choice of signalling frequencies.
  ক

  MFSK

  খ

  MDSK

  গ

  MPSK

  ঘ

  MASK
• The frequency deviation at frequencies above 1 MHz is typically ____________
  ক

  10 to 20 mA-1

  খ

  100 to 500 mA-1

  গ

  1000 to 2000 mA-1

  ঘ

  30 to 40 mA-1
• ________ does not require an external modulator.
  ক

  FSK

  খ

  DSK

  গ

  PSK

  ঘ

  ASK
• ______________ is also referred to as on-off keying (OOK).
  ক

  FSK

  খ

  DSK

  গ

  PSK

  ঘ

  ASK
• The line width in the range ________ of bit rate is specified for ASK heterodyne detection.
  ক

  8%

  খ

  2 to 8%

  গ

  10 t0 50%

  ঘ

  70%
• Almost _________ of the transmitter power is wasted in the use of external modulators.
  ক

  Half

  খ

  Quarter

  গ

  One-third

  ঘ

  Twice
• _____________ is essentially a crude form of Amplitude shift keying.
  ক

  Analog modulation

  খ

  Digital intensity modulation

  গ

  Photodetector

  ঘ

  Receiver structure