EC6502 Principles of Digital Signal Processing question bank

EC6502 Principles of Digital Signal Processing question bank Regulation 2013 Anna University free download. Principles of Digital Signal Processing EC6502 question bank pdf free download

Sample EC6502 Principles of Digital Signal Processing question bank:

Part A 2 marks

1. Obtain the circular convolution of the following sequences x(n) = {1,2,1}; h(n) = {1, -2, 2}

2. How many multiplications and additions are required to compute N –point DFT using radix – 2 FFT?

3. Define DFT and IDFT?

4. State the advantages of FFT over DFTs?

5. What is meant by bit reversal? (ec6502 principles of digital signal processing question bank)

6. Distinguish between DFT and DTFT?

7. What is zero padding? What are its uses?

8. Determine the number of multiplications required in the computation of 8 – point DFT using FFT?

9. What is twiddle factor?

10. How many stages of decimations are required in the case of a 64 point radix 2 DIT FFT algorithm?

11. Find the 4 – point DFT sequence x(n) = {1, 1, -1, -1}.

12. What is meant by in – place computation? (ec6502 principles of digital signal processing question bank)

13. What are the differences and similarities between DIT and DIF.

14. Distinguish between linear convolution and circular convolution?

15. What are the differences between Overlap – add and Overlap – save method?

16. State the properties of DFT?

17. Draw the basic butterfly diagram for the computation in the decimation in frequency FFT algorithm and explain?

18. How will you perform linear convolution using circular convolution?

19. Find the circular convolution of x(n) = {1,2,3,4} with h(n) = {1,1,2,2}?

20. State Parseval’s relation with respect to DFT? (ec6502 principles of digital signal processing question bank)

PART – B 16 marks EC6502 Principles of Digital Signal Processing question bank

1. (i) Compute the eight point DFT of the sequence by using the DIF – FFT algorithm.
(ii) Summarize the properties of DFT

2. Explain the Overlap add and Overlap save method

3. (i) Compute the eight point DFT of the sequence
Using radix – 2 DIT algorithm.
(ii) Explain Overlap add method for linear FIR filtering of a long sequence.

Subject Name	Principles of Digital Signal Processing
Subject Code	EC6502
Regulation	2013

EC6502 Principles of Digital Signal Processing question bank click here to download

EC6502 Principles of Digital Signal Processing Syllabus

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EC6502 Principles of Digital Signal Processing Notes

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EC6502 Principles of Digital Signal Processing Important questions

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EC6501 Digital Communication Question Bank

EC6501 Digital Communication Question Bank regulation 2013 Anna University free download. Digital Communication EC6501 Question Bank pdf free download.

Sample EC6501 Digital Communication Question Bank:

Part A 2 Marks

1. State sampling theorem for low pass signals..

2. Compare uniform and non-uniform quantization.

3. Why is pre-filtering done before sampling?

4. What is natural sampling and flat-top sampling?

5. List out the components required for signal reconstruction

6. Define the term aliasing. (EC6501 Digital Communication question bank)

7. Compare DM and PCM.

8. What is meant by quantization?

9. What is the need for non-uniform quantization?

10. State any two non-uniform quantization rules.

11. Define quantization noise power. (EC6501 Digital Communication question bank)

12. Define Nyquist rate and Nyquist interval.

13. A signal is sampled at Nyquist rate of 8 KHz and is quantized using 8 bit
uniform quantizer. Assuming SNR for a sinusoidal signal, calculate the bit
rate, SNR and BW.

14. What is Companding?

15. Write μ-law of compression.

16. What is TDM? (EC6501 Digital Communication question bank)

17. Draw the block diagram of TDM.

18. What is the need for synchronization in TDM?

19. Define PAM

20. Write the advantages and disadvantages of TDM.

PART-B 16 Marks (EC6501 Digital Communication question bank)

1. State the sampling theorem. Explain the ideal sampling process with necessary
expressions and diagrams. (16)

2. Explain
(i) Natural Sampling and Flat-top Sampling (10)
(ii) Sample and Hold circuit. (6)

3. The signal g(t) = 10 cos(20πt) cos(200πt) is sampled at the rate of 250 samples per second. (EC6501 Digital Communication question bank)

(a) Determine the spectrum of the resulting sampled signal.

(b) Specify the cut-off frequency of the ideal reconstruction filter so as to recover
g(t) from its sampled version.

(c) What is the Nyquist rate for g(t). (EC6501 Digital Communication question bank)

(d) Explain the reconstruction process of a message from its samples. (16)

4. Explain the process of quantization and obtain an expression for signal to
Quantization ratio in the case of a uniform quantizer. (16)

5. Explain the characteristics of Non-uniform quantization with diagrams.
Also compare uniform and non-uniform quantization methods. (16)

6. Briefly discuss about quadrature sampling of band-pass signals. Derive the
expression for SDR. (16)

7. Write short notes on (EC6501 question bank)

(i) Analog companding and (8)
(ii) Digital companding. (8)

8. With neat diagrams, Pulse Code Modulation and demodulation system.(16)

9. A compact disc (CD) records audio signals digitally using PCM. Assume the
audio signal bandwidth to be 15 KHz. (a) What is the Nyquist rate?

(EC6501 Digital Communication question bank)

Subject Name	Digital Communication
Subject Code	EC6501
Regulation	2013

EC6501 Digital Communication question bank click here to download

EC6501 Digital Communication Syllabus

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EC6501 Digital Communication Notes

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EC6501 Digital Communication Important questions

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EC6304 Electronic Circuits 1 Question Bank

EC6304 Electronic Circuits 1 Question Bank Regulation 2013 Anna University free download. Electronic Circuits 1 Question Bank EC6304 pdf free download.

Sample EC6304 Electronic Circuits 1 Question Bank:

PART –A (2 mark questions)

1. Why do we choose Q point at the center of the load line?

2. Name the two techniques used in the stability of the q point .explain.

3. Give the expression for stability factor.

4. List out the different types of biasing. (ec6304 electronic circuits 1 question bank)

5. What do you meant by thermal runway?

6. Why the transistor is called a current controlled device?

7. Define current amplification factor?

8. What are the requirements for biasing circuits?

9. When does a transistor act as a switch? (ec6304 electronic circuits 1 question bank)

10. What is biasing?

11. What is operating point?

12. What is stability factor?

13. What is DC load line?

14. What are the advantages of fixed bias circuit?

15. Explain about the various regions in a transistor? (ec6304 electronic circuits 1 question bank)

16. Explain about the characteristics of a transistor?

17. What is the necessary of the coupling capacitor?

18. What is reverse saturation current? (ec6304 electronic circuits 1 question bank)

19. Why is the operating point selected at the Centre of the active region?

20. What are the basic rules of an operating amplifier?

Part B 16 Mark questions

1. Explain the voltage divider bias method & derive an expression for stability factors.

2. Why biasing is necessary in BJT amplifier? Explain the concept of DC & AC load line with neat diagram. How will you select the operating point, explain it using CE amplifier characteristics?

3. Explain the collector feedback bias amplifier & derive an expression for stability factors. (ec6304 electronic circuits 1 question bank)

4. Explain the fixed bias method & derive an expression for stability factors.

5. Derive an expression for all stability factors & CE configuration S equation.

6. Explain about common source self- bias & voltage divider bias for FET.

7. Explain in details about biasing MOSFET.

8. Discuss the various types of bias compensation.

9. The fixed bias circuit as shown in figure is subjected to an increase in junction temperature from 25oC to 75oC. If β is 125 at 75oC. Determine the percentage change in Q point values (Vce, Ic) over temperature change. Neglect any change in VBE. (ec6304 electronic circuits 1 question bank)

Subject Name	Electronic Circuits 1
Subject Code	EC6304
Regulation	2013

EC6304 Electronic Circuits 1 Question Bank click here to download

EC6304 Electronic Circuits 1 Syllabus

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EC6304 Electronic Circuits 1 Notes

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EC6304 Electronic Circuits 1 Important questions

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