LTI System as Frequency Selective Filters MCQ

Test your knowledge with important LTI System as Frequency Selective Filters MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more LTI System as Frequency Selective Filters MCQs on Bissoy. Bissoy App

• If the system has a impulse response as h(n)=Asin(n+1)ω0u(n), then the system is known as Digital frequency synthesizer.
  ক

  True

  খ

  False
• The filter with the system function H(z)=z-k is a ____________
  ক

  Notch filter

  খ

  Band pass filter

  গ

  All pass filter

  ঘ

  None of the mentioned
• A comb filter is a special case of notch filter in which the nulls occur periodically across the frequency band.
  ক

  True

  খ

  False
• Which of the following filters have a frequency response as shown below?
  ক

  Band pass filter

  খ

  Band stop filter

  গ

  All pass filter

  ঘ

  Notch filter
• A digital resonator is a special two pole band pass filter with the pair of complex conjugate poles located near the unit circle.
  ক

  True

  খ

  False
• If the low pass filter described by the difference equation y(n)=0.9y(n-1)+0.1x(n) is converted into a high pass filter, then what is the frequency response of the high pass filter?
  ক

  0.1/(1+0.9ejω)

  খ

  0.1/(1+0.9e-jω)

  গ

  0.1/(1-0.9ejω)

  ঘ

  None of the mentioned
• If hlp(n) denotes the impulse response of a low pass filter with frequency response Hlp(ω), then what is the frequency response of the high pass filter in terms of Hlp(ω)?
  ক

  Hlp(ω-π/2)

  খ

  Hlp(ω+π/2)

  গ

  Hlp(ω-π)

  ঘ

  Hlp(ω+π)
• The ‘Envelope delay’ or ‘Group delay’ is the time delay that the signal component of frequency ω undergoes as it passes from the input to the output of the system.
  ক

  True

  খ

  False
• An ideal filter should have zero gain in their stop band.
  ক

  True

  খ

  False
• Which filter has a magnitude frequency response as shown in the plot given below?
  ক

  Low pass Filter

  খ

  High pass Filter

  গ

  Band pass Filter

  ঘ

  Band stop Filter
• An ideal filter should have unity gain in their stop band.
  ক

  True

  খ

  False