Angle modulation MCQ

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

• FM can improve the receiver performance through adjustment of transmitted power.
  ক

  True

  খ

  False
• In angle modulation, signal to noise ratio before detection is a function of ______
  ক

  Modulation index

  খ

  Input signal to noise ratio

  গ

  Maximum frequency of the message

  ঘ

  IF filter bandwidth
• PLL in FM detection stands for ______
  ক

  Phase locked loop

  খ

  Programmable logic loop

  গ

  Phase locked logic

  ঘ

  Programmable locked loop
• Which of the following FM demodulator is sometimes known as pulse averaging discriminator?
  ক

  Slope detection

  খ

  Zero crossing detection

  গ

  Quadrature detection

  ঘ

  Phase locked discriminator
• Frequency demodulator is a frequency to amplitude converter circuit.
  ক

  True

  খ

  False
• Which of the following is used to vary the frequency of the carrier frequency in accordance with the baseband signal amplitude variations in direct method of FM generation?
  ক

  Integrator

  খ

  Envelope detector

  গ

  Multivibrator

  ঘ

  Voltage controlled oscillators
• In indirect method, the carrier frequency is directly varied in accordance with the input modulating signal.
  ক

  True

  খ

  False
• Which of the following are two methods for generating FM signal?
  ক

  Coherent method, noncoherent method

  খ

  Product detector, envelope detector

  গ

  Direct method, indirect method

  ঘ

  Slope detector, Zero crossing detector
• FM bandwidth is approximated using _______ rule.
  ক

  Carson’s

  খ

  Faraday’s

  গ

  Maxwell’s

  ঘ

  Armstrong’s
• Frequency modulation index defines the relationship between the ______ and bandwidth of transmitted signal.
  ক

  Frequency of message signal

  খ

  Amplitude of message signal

  গ

  Amplitude of carrier signal

  ঘ

  Frequency of carrier signal
• Frequency modulated signal is regarded as the phase modulated signal in which the modulating wave is differentiated before modulation.
  ক

  True

  খ

  False
• Which of the following are two most important classes of angle modulation?
  ক

  Amplitude modulation, frequency modulation

  খ

  Amplitude modulation, phase modulation

  গ

  Frequency modulation, phase modulation

  ঘ

  Single sideband amplitude modulation, phase modulation
• FM is called constant envelope because ______ of carrier wave is kept constant.
  ক

  Frequency

  খ

  Amplitude

  গ

  Phase

  ঘ

  Angle
• FM is a part of general class of modulation known as ______
  ক

  Angle modulation

  খ

  Phase modulation

  গ

  Amplitude modulation

  ঘ

  Frequency modulation