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

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B.Tech.(Electronics Engineering) (2012 Onwards) (Sem.-6)

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DIGITAL SIGNAL PROCESSING

Subject Code : BTEEE-601

M.Code: 72835

INSTRUCTIONS TO CANDIDATES :

1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.

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2. SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.

SECTION-A

1. Answer briefly :
   1. Define DFT and discuss its significance.
   2. Differentiate between energy signals and power signals.

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   3. Define convolution.
   4. Discuss the importance of ROC in z transform.
   5. Explain the time reversal property of z transform.
   6. List the various factors that are considered for the design of a digital filter.
   7. Compare the computational requirements of DFT with different FFT algorithms.

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   8. Discuss the term “quantisation of filter coefficients”.
   9. Compare general purpose processor and DSP processor.
   10. Why structure realization is required in a system? Explain.

SECTION-B

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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 :
   1. Elementary discrete time signals
   2. Manipulation of discrete time signals
4. Find the Z-transform of the following :
   1. x(n) = nu(n)

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   2. x(n) = (1/3)" [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

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7. Compute the 16-point DFT of the sequence.

   x(n) = { 2n +2, 0 = n =15 0, otherwise }

8. Explain the following
   1. Applications of Digital Signal Processing
   2. Design of IIR filter by Impulse Invariance

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

NOTE : Disclosure of identity by writing mobile number or making passing request on any page of Answer sheet will lead to UMC against the Student.