NADAR SARSWATHI COLLEGE OF ENGINEERING AND TECHNOLOGY, THENI.
Course/Branch : B.E/EEE Year / Semester :III/V Format NAC/TLP-
No. 07a.13
Subject Code :EE8591 Subject Name :Digital Signal Processing Rev. No. 02
Unit No :4 Unit Name :Design of Digital filters Date 30/09/20
OBJECTIVE TYPE QUESTION BANK
BTL
S. No. Objective Questions (MCQ /True or False / Fill up with Choices )
L1
1. Which of the following is used in the realization of a system?
a) Delay elements
b) Multipliers
c) Adders
d) All of the mentioned
L2
2. Computational complexity refers to the number of ____________
a) Additions
b) Arithmetic operations
c) Multiplications
d) None of the mentioned
L3
3. What is the general system function of an FIR system?
a) ∑M−1k=0bkx(n−k)
b) ∑Mk=0bkz−k
c) ∑M−1k=0bkz−k
d) None of the mentioned
L3
4. Where does the poles of the system function of the second filter locate?
a) ej2π(k+α)M
b) ej2π(k+α)/M
c) ej2π(k-α)/M
d) ejπ(k+α)/M
L1
5. Which of the following is the application of lattice filter?
a) Digital speech processing
b) Adaptive filter
c) Electroencephalogram
d) All of the mentioned
L3
6. If we consider a sequence of FIR filer with system function H m(z)=Am(z),
then what is the definition of the polynomial Am(z)?
a) 1+∑mk=0αm(k)z−k
b) 1+∑mk=1αm(k)z−k
Prepared By: B.SHANTHINIPage 1 of 6
NADAR SARSWATHI COLLEGE OF ENGINEERING AND TECHNOLOGY, THENI.
Course/Branch : B.E/EEE Year / Semester :III/V Format NAC/TLP-
No. 07a.13
Subject Code :EE8591 Subject Name :Digital Signal Processing Rev. No. 02
Unit No :4 Unit Name :Design of Digital filters Date 30/09/20
OBJECTIVE TYPE QUESTION BANK
c) 1+∑mk=1αm(k)zk
d) ∑mk=0αm(k)z−k
L3
7. What does the structure given below represents?
a) Direct form-I
b) Regular Direct form-II
c) Transposed direct form-II
d) None of the mentioned
L3
8. The structure shown below is known as ____________
a) Parallel form structure
b) Cascade structure
c) Direct form
d) None of the mentioned
Prepared By: B.SHANTHINIPage 2 of 6
NADAR SARSWATHI COLLEGE OF ENGINEERING AND TECHNOLOGY, THENI.
Course/Branch : B.E/EEE Year / Semester :III/V Format NAC/TLP-
No. 07a.13
Subject Code :EE8591 Subject Name :Digital Signal Processing Rev. No. 02
Unit No :4 Unit Name :Design of Digital filters Date 30/09/20
OBJECTIVE TYPE QUESTION BANK
L1
9. The state space or the internal description of the system still involves a
relationship between the input and output signals, what are the additional
set of variables it also involves?
a) System variables
b) Location variables
c) State variables
d) None of the mentioned
L3
10. What is the condition to call a number λ is an Eigen value of F and a
nonzero vector U is the associated Eigen vector?
a) (F+λI)U=0
b) (F-λI)U=0
c) F-λI=0
d) None of the mentioned
L1
11. If (101.01)2=(x)10, then what is the value of x?
a) 505.05
b) 10.101
c) 101.01
d) 5.25
L3
12. What is the resolution to cover a range of numbers xmax-xmin with ‘b’
number of bits?
a) (xmax+xmin)/(2b-1)
b) (xmax+xmin)/(2b+1)
c) (xmax-xmin)/(2b-1)
d) (xmax-xmin)/(2b+1
L1
13. What is the binary equivalent of (-3/8)?
a) (10011)2
b) (0011)2
c) (1100)2
d) (1101)2
L2
14. If E=0 and M=0, then which of the following statement is true about X?
a) Not a number
b) Infinity
c) Defined
d) Zero
Prepared By: B.SHANTHINIPage 3 of 6
NADAR SARSWATHI COLLEGE OF ENGINEERING AND TECHNOLOGY, THENI.
Course/Branch : B.E/EEE Year / Semester :III/V Format NAC/TLP-
No. 07a.13
Subject Code :EE8591 Subject Name :Digital Signal Processing Rev. No. 02
Unit No :4 Unit Name :Design of Digital filters Date 30/09/20
OBJECTIVE TYPE QUESTION BANK
L1
15. What is the configuration of system for digital processing of an analog
signal?
a) Analog signal|| Pre-filter -> D/A Converter -> Digital Processor ->
A/D Converter -> Post-filter
b) Analog signal|| Pre-filter -> A/D Converter -> Digital Processor ->
D/A Converter -> Post-filter
c) Analog signal|| Post-filter -> D/A Converter -> Digital Processor ->
A/D Converter -> Pre-filter
d) None of the mentioned
L3
16. What is the z-transform of sequence {dq(n)} i.e., Dq(z)= ?
a) Hs(z)X(z)−Hn(z)E(z)
b) Hs(z)X(z)+Hn(z)E(z)
c) Hs(n)X(z)+Hn(n)E(z)
d) Hn(z)X(z)−Hs(z)E(z)
L1
17. If the input analog signal is within the range of the quantizer, the
quantization error eq (n) is bounded in magnitude i.e., |eq (n)| < Δ/2 and
the resulting error is called?
a) Granular noise
b) Overload noise
c) Particulate noise
d) Heavy noise
L3
18. What is the expression for SQNR which can be expressed in a
logarithmic scale?
a) 10 log10Px/Pn
b) 10 log10Pn/Px
c) 10 log2Px/Pn
d) 2 log2Px/Pn
L2
19. In IIR Filter design by the Bilinear Transformation, the Bilinear
Transformation is a mapping from
a) Z-plane to S-plane
b) S-plane to Z-plane
c) S-plane to J-plane
d) J-plane to Z-plane
L3
20. We use y{‘}(nT)=-ay(n/T)+bx(nT) to substitute for the derivative in
Prepared By: B.SHANTHINIPage 4 of 6
NADAR SARSWATHI COLLEGE OF ENGINEERING AND TECHNOLOGY, THENI.
Course/Branch : B.E/EEE Year / Semester :III/V Format NAC/TLP-
No. 07a.13
Subject Code :EE8591 Subject Name :Digital Signal Processing Rev. No. 02
Unit No :4 Unit Name :Design of Digital filters Date 30/09/20
OBJECTIVE TYPE QUESTION BANK
y(nT) = T/2[y‘(nT)+y‘(nT−T)]+y(nT−T) and thus obtain a difference
equation for the equivalent discrete-time system. With y(n) = y(nT) and
x(n) = x(nT), we obtain the result as of the following?
a) (1+aT/2)Y(z)−(1−aT/2)y(n−1)=bT/2[x(n)+x(n−1)]
b) (1+aT/n)Y(z)−(1−aT/n)y(n−1)=bT/n[x(n)+x(n−1)]
c) (1+aT/2)Y(z)+(1−aT/2)y(n−1)=bT/2(x(n)−x(n−1))
d) (1+aT/2)Y(z)+(1−aT/2)y(n−1)=bT/2(x(n)+x(n+1))
L2
21. Which of the following is a frequency domain specification?
a) 0 ≥ 20 log|H(jΩ)|
b) 20 log|H(jΩ)| ≥ KP
c) 20 log|H(jΩ)| ≤ KS
d) All of the mentioned
L1
22. What is the lowest order of the Butterworth filter with a pass band gain
KP=-1 dB at ΩP=4 rad/sec and stop band attenuation greater than or equal
to 20dB at ΩS = 8 rad/sec?
a) 4
b) 5
c) 6
d) 3
L3
23. What is the formula for chebyshev polynomial T N(x) in recursive form?
a) 2TN-1(x) – TN-2(x)
b) 2TN-1(x) + TN-2(x)
c) 2xTN-1(x) + TN-2(x)
d) 2xTN-1(x) – TN-2(x)
L3
24. The left half of the s-plane is mapped to which of the following in the z-
domain?
a) Outside the circle |z-0.5|=0.5
b) Outside the circle |z+0.5|=0.5
c) Inside the circle |z-0.5|=0.5
d) Inside the circle |z+0.5|=0.5
L3
25. What is the z-transform of the first backward difference equation of
y(n)?
a) (1+z−1/T) Y(z)
b) (1−z−1/T )Y(z)
c) (1+z1/T )Y(z)
Prepared By: B.SHANTHINIPage 5 of 6
NADAR SARSWATHI COLLEGE OF ENGINEERING AND TECHNOLOGY, THENI.
Course/Branch : B.E/EEE Year / Semester :III/V Format NAC/TLP-
No. 07a.13
Subject Code :EE8591 Subject Name :Digital Signal Processing Rev. No. 02
Unit No :4 Unit Name :Design of Digital filters Date 30/09/20
OBJECTIVE TYPE QUESTION BANK
d) None of the mentioned
L1
26. If a continuous time signal x(t) with spectrum X(F) is sampled at a rate
Fs=1/T samples per second, the spectrum of the sampled signal is
_____________
a) Non periodic repetition
b) Non periodic non-repetition
c) Periodic repetition
d) None of the mentioned
L3
27. When σ=0, then what is the condition on ‘r’?
a) 0<r<1
b) r=1
c) r>1
d) None of the mentioned
L3
28. Which of the following gives the equation for envelope delay?
a) dϴ(ω)/dω
b) ϴ(ω)
c) -dϴ(ω)/dω
d) -ϴ(ω)
L1
29. Which of the following is true in the case of Butterworth filters?
a) Smooth pass band
b) Wide transition band
c) Not so smooth stop band
d) All of the mentioned
L2
30. The lack of precise control of cutoff frequencies is a disadvantage of
which of the following designs?
a) Window design
b) Chebyshev approximation
c) Frequency sampling
d) None of the mentioned
Prepared By: B.SHANTHINIPage 6 of 6
