Other Bachelor Degree- SIGNALS AND SYSTEMS (Karunya University, Coimbatore-2010)
Saturday, 24 August 2013 07:37anudouglas
Karunya University
(Karunya Institute of Technology and Sciences)
(Declared as Deemed to be University under Sec.3 of the UGC Act, 1956)
End Semester Examination – November/December 2010
Subject Title : SIGNALS AND SYSTEMS Time : 3 hours
Subject Code: 09EI218 Maximum Marks: 100
Answer ALL questions
PART – A (10 x 1 = 10 MARKS)1. Sketch the signal.
2. Find where
3. What are the limitations of Fourier series?
4. What is the significance of Parsevals relation?
5. What is the Nyquist criterion?
6. What do you mean by aliasing?
7. Differentiate DFT and DTFT.
8. Define DTFT.
9. Define Z transform of x(n).
10. Find Z transform of {3, 1, 2,-5, 7, 2}; where.
PART – B (5 x 3 = 15 MARKS)
11. Test the system for linearity.
12. Prove the convolution property of CTFT.
13. What is the principle of anti aliasing filter?
14. Prove Parsevals theorem for DFT.
15. Find the Z transform of.
PART – C (5 x 15 = 75 MARKS)
16. a. Perform Continuous time convolution
b. Classify the following signal into energy (or) power signal x
(OR)
17. Find the impulse response of the discrete time system
18. a. Find Fourier transform of
b. Find inverse Fourier transform of.
(OR)
19. Find the cosine Fourier series of an half wave rectified sine function with amplitude of A
20. Explain the reconstruction of the continuous time signals from its sampled version.
(OR)
21. The signal sampled at a rate of 8 samples per second. Plot the amplitude spectrum for. Can the original signal be recovered from samples? Explain.
[P.T.O]
22. Find the frequency response of the following causal systems
a.
b.
(OR)
23. Find the discrete time Fourier series representation for
24. Find the inverse Z transform of
(OR)
25. Find the impulse response of
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