# PTU B.Tech Electrical Engineering 6th Semester May 2019 72835 DIGITAL SIGNAL PROCESSING Question Papers

PTU Punjab Technical University B-Tech May 2019 Question Papers 6th Semester Electrical and Electronics Engineering (EEE)-EE-Electrical Engineering

Roll No.
Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(Electronics Engineering) (2012 Onwards) (Sem.?6)
DIGITAL SIGNAL PROCESSING
Subject Code : BTEEE-601
M.Code : 72835
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1.
SECTION-A is COMPULSORY consisting of TEN questions carrying T WO marks
each.
2.
SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3.
SECTION-C contains T HREE questions carrying T EN marks each and students
have to attempt any T WO questions.

SECTION-A
1.

a. Define DFT and discuss its significance.

b. Differentiate between energy signals and power signals.

c. Define convolution.

d. Discuss the importance of ROC in z transform.

e. Explain the time reversal property of z transform.

f. List the various factors that are considered for the design of a digital filter.

g. Compare the computational requirements of DFT with different FFT algorithms.

h. Discuss the term "quantisation of filter coefficients".

i. Compare general purpose processor and DSP processor.

j. Why structure realization is required in a system? Explain.

1 | M-72835

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SECTION-B
2.
Discuss the basic elements of a DSP system. Also explain the various advantages and
disadvantages of DSP over analog processing.

3.
What is a signal? Discuss :

a. Elementary discrete time signals

b. Manipulation of discrete time signals

4.
Find the Z-transform of the following :

a. x(n) = n u(n)

b. x(n) = (l/3)n [u(n)?u(n?8)]
5.
Discuss the various properties of Discrete Fourier transform in detail.

6.
Discuss any one structures for implementation of IIR system by considering an example.

SECTION-C
7.
Compute the 16-point DFT of the sequence.
2n 2,
0 n 15

x(n)

0,
otherwise

8.
Explain the following :

a. Applications of Digital Signal Processing

b. Design of IIR filter by Impulse Invariance

9.
Discuss (in detail) the architecture of TMS series of DSP processor.

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