Communication Receivers MCQ

Test your knowledge with important Communication Receivers MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Communication Receivers MCQs on Bissoy. Bissoy App

• What type of oscillators are used to input a wide range of frequencies to the IF amplifier?
  ক

  LC oscillators

  খ

  Crystal oscillators

  গ

  Variable frequency oscillators

  ঘ

  Diode oscillators
• The LNA of a transducer has failed during the transmission of a signal. Which component’s failure has caused this?
  ক

  Duplexer

  খ

  RF amplifier

  গ

  Antenna

  ঘ

  Mixer
• Which of the following is not an advantage of using RF amplifiers in the initial stage of signal selection?
  ক

  Low noise

  খ

  Reduced oscillator radiation

  গ

  Better selectivity

  ঘ

  Less power consumption
• What is connected between the antenna and the mixer to avoid oscillator radiation?
  ক

  LNA

  খ

  Attenuator

  গ

  Duplexer

  ঘ

  Power amplifier
• What is the output of a mixer circuit?
  ক

  Sum of frequencies

  খ

  Difference of frequencies

  গ

  Sum and difference of frequencies

  ঘ

  Multiplication of frequencies
• What type of receivers converts all incoming frequency into a lower frequency for better selectivity and sensitivity?
  ক

  Analogous receivers

  খ

  Superheterodyne receivers

  গ

  Digital receiver

  ঘ

  Crystal receiver
• A sensitive and selective receiver can be made using only amplifiers, selective filters, and a demodulator.
  ক

  True

  খ

  False
• Analog signals : Signal to noise ratio:: Digital signals _________
  ক

  Signal Attenuation

  খ

  Bit error rate

  গ

  Error rate

  ঘ

  Digital noise ratio
• What is the input signal level that is approximately equal to the average internally generated noise value called?
  ক

  MDS

  খ

  MBS

  গ

  MMD

  ঘ

  MSD
• The ability to pick up week signals by a receiver is called _________
  ক

  Gain

  খ

  Amplification

  গ

  Sensitivity

  ঘ

  Selectivity
• What circuit provides the initial selectivity in a receiver?
  ক

  Amplifier

  খ

  Attenuator

  গ

  Multiplexer

  ঘ

  LC tuned circuits
• Which of the following are the two main characteristics of receivers?
  ক

  Selectivity and sensitivity

  খ

  Gain and attenuation

  গ

  Modulation and demodulation

  ঘ

  Multiplexing and demultiplexing