Vinayaka Missions University 2009 B.E Information Technology FUNDAMENTALS OF DIGITAL SIGNAL PROCESSING BANK - Question Paper

VINAYAKA MISSIONS UNIVERSITY
V.M.K.V ENGINEERING COLLEGE, SALEM

DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

FUNDAMENTALS OF DIGITAL SIGNAL PROCESSING
COMMON TO EEE, IT & CSE

ques. BANK

UNIT I
PART A

1. Distinguish ranging from energy and power signal.
2. How can we prevent aliasing?
3. Classify the signals?
4. What is a multi channel signal?
5. State analog signal.
6. Determine z transform and ROC of the signal {1,2,3,4}
7. List the mathematical operations performed on discrete time signals.
8. Find whether the provided system is linear or not. Y(n)=n x(n)
9. What is meant by ROC?
10. describe z transform.
11. List the different methods of classifying discrete time system.
12. Determine z transform and ROC of the signal {5,6,7,8}
13. What are the different methods of representing discrete time signal?
14. How will you classify the discrete time signal?
15. List out a few important properties of ROC.
16. Determine the convolution sum of 2 sequences x(n)={3,2,1,2} and h(n)={1,2,1,2}.
PART B

1. discuss signals and classify the signals with suitable examples. (12 marks)
2. obtain the subsequent summations
i) (3 marks)
ii) (3 marks)
iii) (3 marks)
iv) (3 marks)

3. Determine the values of power and energy of the subsequent signals and obtain whether
the signals are power or energy signals.
i) (4 marks)
ii) (4 marks)
iii) (4 marks)
4. Test the causality of the subsequent systems
i) y(n) = x(n)-x(n-1) (3marks)
ii) y(n) = ax(n)+bx(n-1) (3marks)
iii) y(n) = x(n2) (3marks)
iv) y(n) = nx(n) (3marks)

5. discuss the properties of Z - transform. (12marks)

6. Test the Time invariance of the subsequent systems.
i).y(n) = x(n)+c (3marks)
ii).y(n) = x(n)-x(n-1) (3marks)
iii).y(n) = x(-n) (3marks)
iv).y(n) = x(n)-bx(n-1) (3marks)

7. Determine the Z-transform and ROC of the causal and non causal sequence
i).x (n) = {1, 0, 3,-1, 2} (4marks)

ii).x (n) = {1,-2, 1, 3, 4} (4marks)

iii).x (n) = {1, 2, 5,-4, 1, 3,-1, 2, 1} (4marks)

8. describe discrete time system and classify the discrete time system with suitable examples.
(12marks)

9. Perform the circular convolution of the subsequent sequences x1(n) = {4, 3, 2, 1} and
x2(n) ={5,2,3,4}. (12marks)

10. obtain the linear convolution for the provided sequence x(n)= { 1,2,3,4} and
h (n) = {1, 1,1,1}. (12marks)

Earning:   Approval pending.