Download JNTU-Hyderabad MBA 3rd Sem R17 2019 Dec 743AQ Strategic Management Accounting Question Paper

Code: 13A05402

B.Tech II Year II Semester (R13) Supplementary Examinations December 2016

SIGNALS AND SYSTEMS

(Common to ECE and EIE)

Time: 3 hours Max. Marks: 70

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PART A
(Compulsory Question)

1. Answer the following: (14 Marks)
   1. Define signal and system.
   2. Distinguish between causal and non-causal systems.
   3. State Dirichlet's conditions for Fourier series.

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   4. Define Fourier Transform.
   5. Define Laplace Transform.
   6. List any two properties of ROC of Laplace Transform.
   7. Define Z-Transform.
   8. State sampling theorem.

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   9. Define convolution.
   10. Define transfer function.
   11. What is an LTI system?
   12. Define energy and power signals.
   13. What is aliasing?

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   14. What is the relationship between Laplace and Fourier transform?

PART B
(Answer all five units, 5 X 12 = 60 Marks)

UNIT - I

1. (a) Explain about elementary continuous time signals in detail.
   

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   OR
   (b) Explain properties of systems.

UNIT - II

1. (a) State and prove properties of Fourier series.
   OR
   (b) Find the Fourier transform of a gate pulse of unit amplitude and unit width centered at t=0.

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UNIT - III

1. (a) State and prove properties of Laplace transform.
   OR
   (b) Find the Laplace transform of f(t) = t²e^-atu(t).

UNIT - IV

1. (a) State and prove properties of Z-transform.
   OR
   

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   (b) Find the Z-transform of x(n) = n² u(n).

UNIT - V

1. (a) Explain about ideal filters characteristics.
   OR
   (b) Explain about Hilbert transform.

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