DSP(Digital Signal Processing )Multiple Choice Questions

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Model paper - 1



Model Paper-2

1. In the Frequency Transformations of the analog domain the transformation is a. Low Pass to Lowpass
b.  Lowpass to Highpass
c.   Lowpass to Bandpass
d.  Lowpass to Bandreject

2. In the Frequency Transformations of the analog domain the transformation is a. Low Pass to Lowpass
b.  Lowpass to Highpass
c.  Lowpass to Bandpass
d.           Lowpass to Bandreject

3. The magnitude response of the following filter decreases monotonically as frequency increases
a.  Butterworth Filter
b.  Chebyshev type - 1
c.  Chebyshev type - 2
d.  FIR Filter

4. The transition band is more in
a.  Butterworth Filter
b.  Chebyshev type - 1
c.  Chebyshev type - 2
d.  FIR Filter

5. The poles of Butterworth filter lies on
a.   sphere
b.  circle
c.   ellipse
d.  parabola

6. I I R digital filters are of the following nature
a.  Recursive
b.  Non Recursive
c.  Reversive
d.  Non Reversive

7. In I I R digital filter the present output depends on
a.  Present and previous Inputs only
b.  Present input and previous outputs only
c.  Present input only
d.  Present Input, Previous input and output

8. Which of the following is best suited for I I R filter when compared with the FIR filter
a.  Lower sidelobes in stopband
b.  Higher Sidelobes in stopband
c.  Lower sidelobes in Passband
d.  No sidelobes in stopband

9. In the case of I I R filter which of the following is true if the phase distortion is tolerable
a.  More parameters for design
b.  More memory requirement
c.  Lower computational Complexity
d.  Higher computational complexity

10. A causal and stable I I R filter has
a.   Linear phase
b.  No Linear phase
c.   Linear amplitude
d.  No Amplitude

11. Neither the Impulse response nor the phase response of the analog filter is Preserved in the digital filter in the following method
a.  The method of mapping of differentials
b.  Impulse invariant method
c.  Bilinear transformation
d.  Matched Z - transformation technique 

12. Out of the given I I R filters the following filter is the efficient one
 a. Circular filter
b.  Elliptical filter
c.   Rectangular filter
d.  Chebyshev filter

13. What is the disadvantage of impulse invariant method
 a. Aliasing
b.  one to one mapping
c.  anti aliasing
d.  warping

14. Which of the I I R Filter design method is antialiasing method?
a.  The method of mapping of differentials
b.  Impulse invariant method
c.  Bilinear transformation
d.  Matched Z - transformation technique 

15. The nonlinear relation between the analog and digital frequencies is called 
a. aliasing
b.  warping
c.   prewarping
d.  antialiasing

16. The most common technique for the design of I I R Digital filter is
 a. Direct Method
b.  In direct method
c.   Recursive method
d.  non recursive method

17. In the design a IIR Digital filter for the conversion of analog filter in to Digital domain the desirable property is
a.                   The axis in the s - plane should map outside the unit circle in the z - Plane
b.                  The Left Half Plane(LHP) of the s - plane should map in to the unit circle in the Z -
Plane
c.                   The Left Half Plane(LHP) of the s-plane should map outside the unit circle in the z-
Plane
d.                  The Right Half Plane(RHP) of the s-plane should map in to the unit circle in the Z -
Plane

18. In the IIR filter Design method by approximation of derivatives as Ω varies
from to , the corresponding locus of a point in the zplane is a circle with radius and center 
a. 0,0
b.  1,1
c.  1, - 1
d.

19.              In the Impulse Invariant method theratio of
a.
b.
c.
d.

20.              The I I R filter design method thatovercomes the limitation of applicability to only
Lowpass filter and a limited class of bandpass filters is
a.   Approximation of derivatives
b.  Impulse Invariance
c.   Bilinear Transformation
d.  Frequency sampling
DSP(Digital Signal Processing )Multiple Choice Questions DSP(Digital Signal Processing )Multiple Choice Questions Reviewed by Suresh Bojja on 10/23/2015 07:44:00 AM Rating: 5

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