Pondicherry University 2011 B.Tech Electronics and Communications Engineering - Signals and Systems - Question Paper
Sunday, 27 January 2013 05:55Web
Page 1 of 2
PART-A (10*2=20 marks)
ans all ques..
1. describe unit impulse function.
2. what is system?
3. describe DFT pair.
4. State any 2 properties of LT.
5. Write any 2 convolution properties.
6. describe LT pairs.
7. How to represent discrete time system?
8. State any 2 prperties of ROC.
9. What is frequency response?
10. State the relation ranging from DTFT and z-Transform.
PART-B (5*11=55 marks)
UNIT I
11. obtain the different classification of the subsequent system y(n)=x(n)x(n-1).
or
12. obtain the odd and even component of x(t)=cost+sint+costsint.
UNIT II
13. obtain the trigonometric Fourier series for the periodic signal x(t) in Figure.
For this question, the figure has attached
or
14. state and prove any 3 properties of Fourier series.
UNIT III
15. Solve the differential formula using laplace transform
d^2 y(t)/dt^2 +2y(t) = d/dt x(t) it y(0) = two dy(0)/dt = one and x(t) = e^=t u(t).
or
16. State any prove any two convolution Interval properties.
UNIT IV
17. Consider
y(n)-1/6 y(n-1) - 1/6 y(n-2) = x(n). Determine frequency response and impulse response of the system.
or
18. obtain the inverse z-Transform of x(z) = z(z-1)/(z+2)^3(z+1).
UNIT V
19. obtain the impulse response and step response for the subsequent system
y(n) - 3/4 y(n-1) + 1/8 y(n-2) = x(n).
or
20. obtain the convolution of
x(n) = {1,2,3,2} & h(n) = {1,2,2} using graphical method.
Attachment: |
Earning: Approval pending. |