This set of Digital Signal Processing Multiple Choice Questions & Answers (MCQs) focuses on “Analog Filters Classification”.

1. What is the stop band gain of a low pass filter with δS as the pass band attenuation?
a) -20log(1- δS)
b) -20log(δS)
c) 20log(δS)
d) 20log(1- δS)

2. What is the region after the stop band frequency in the magnitude frequency response of a low pass filter?
a) Stop band
b) Pass band
c) Transition band
d) None of the mentioned

3. What is the cutoff frequency of a normalized filter?
a) 2 rad/sec
b) 1 rad/sec
c) 0.5 rad/sec
d) None of the mentioned

4. If δP is the forbidden magnitude value in the pass band and δS is the forbidden magnitude value in the stop band, then which of the following is true in the pass band region?
a) 1-δS≤|H(jΩ)|≤1
b) δP≤|H(jΩ)|≤1
c) 0≤|H(jΩ)|≤ δS
d) 1-δP≤|H(jΩ)|≤1

5. What is the value of stop band ripple in dB?
a) -20log(1-δS)
b) -20log(δS)
c) 20log(1-δS)
d) None of the mentioned

6. The low pass, high pass, band pass and band stop filters can be designed by applying a specific transformation to a normalized low pass filter.
a) True
b) False

7. What is the value of pass band ripple in dB?
a) -20log(1- δP)
b) -20log(δP)
c) 20log(1- δP)
d) None of the mentioned

8. What is the region between origin and the pass band frequency in the magnitude frequency response of a low pass filter?
a) Stop band
b) Pass band
c) Transition band
d) None of the mentioned

9. What is the pass band gain of a low pass filter with 1- δP as the pass band attenuation?
a) -20log(1- δP)
b) -20log(δP)
c) 20log(δP)
d) 20log(1- δP)

10. If δP is the forbidden magnitude value in the pass band and δS is the forbidden magnitude value in th stop band, then which of the following is true in the stop band region?
a) 1- δP≤|H(jΩ)|≤1
b) δP≤|H(jΩ)|≤1
c) 0≤|H(jΩ)|≤ δS
d) 1- δP≤|H(jΩ)|≤1

11. What is the region between stop band and the pass band frequencies in the magnitude frequency response of a low pass filter?
a) Stop band
b) Pass band
c) Transition band
d) None of the mentioned

Simran

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