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One Of The Best Blog For Engineering StudentsThis B log is for a l l Engineer ing students . you can co l lect your previous Year Univers i ty quest ion papers . P lease Request for your needs l ike QUESTION PAPER,LAB MANUAL,PROGRAM ETC SAME WILL BE UPDATED IN 24 HOURS. p lz use the search in b log to f ind your needs

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Tuesday, June 28, 2011

Page 3: 13

EC2302 Digital Signal Processing ANNA UNIVERSITY QUESTION BANK , QUESTION PAPER FOR UNIT1,UNIT2,UNIT3,UNIT4,UNIT5 IMPORTANT 2 MARKS AND 16 MARKS QUESTIONS

QUESTION BANKUNIT I

1. Define about DFT and IDFT?2. Find the values of WNk ,When N=8, k=2 and also for k=3.3. Compare DIT radix-2 FFT and DIF radix -2 FFT.4. Draw the radix-2 FFT–DIF butterfly diagram.5. Draw the radix-2 FFT–DIT butterfly diagram.6. What is the necessity of sectioned convolution in signal processing?7. Define Correlation of the sequence.8. State any two DFT properties.9. Why impulse invariant transformation is not a one-to-one mapping?

PART - B1. a) Compute 4- point DFT of casual three sample sequence is given by,x(n) = 1/3, 0_n_2 = 0, else                                                                                      b) State and prove shifting property of DFT.                                                          2. Derive and draw the radix -2 DIT algorithms for FFT of 8 points.                   3. Compute the DFT for the sequence {1, 2, 0, 0, 0, 2, 1, 1}. Using radix -2 DIF FFT and radix -2 DIT- FFT algorithm.                                                                     4. Find the output y(n) of a filter whose impulse response is h(n) = {1, 1, 1} and input signal x(n) = {3, -1, 0, 1, 3, 2, 0, 1, 2, 1}. Using Overlap add overlap save method.                                                                                                                      5. In an LTI system the input x(n) = {1, 1, 1}and the impulse response h(n) = {-1, -}Determine the response of LTI system by radix -2 DIT FFT                                       6. Find the output y(n) of a filter whose impulse response is h(n) = {1, 1, 1} and input signal x(n) = {3, -1, 0, 1, 3, 2, 0, 1, 2, 1}. Using Overlap save method   

UNIT-II: DIGITAL FILTERS DESIGNTWO MARKS:

1. Differentiate IIR filters and FIR filters.2. Write the characteristics features of Hanning window3. Define pre-warping effect? Why it is employed?

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4. Give any two properties of Butterworth filter.5. When a FIR filter is said to be a linear phase FIR filter6. Write the characteristics features of rectangular window.7. Write the expression for Kaiser window function..8. What are the advantages and disadvantages of FIR filters?9. Write the characteristics features of Hamming window10. Why mapping is needed in the design of digital filters?

PART - B1 . With a neat sketch explain the design of IIR filter using impulse invariant transformation.                                                                                                            2. Apply impulse invariant transformation to H(S) = (S +1) (S + 2) with T =1sec and find H(Z).                                                                                                      3. For a given specifications of the desired low pass filter is0.707 _ |H(_)| _1.0, 0 _ _ _ 0.2_|H(_)| _ 0.08, 0.4 _ _ _ _ _Design a Butterworth filter using bilinear transformation.                                   4. Explain the procedural steps the design of low pass digital Butterworth filter and list its properties.                                                                                           5. The normalized transfer function of an analog filter is given by,1Ha(Sn)= Sn2 + 1.414Sn +1 with a cutoff frequency of 0.4 _, using bilinear transformation.                                                                                                              .6. List the three well known methods of design technique for IIR filters and explain any one.                                                                                                           7. Design a low pass filter using rectangular window by taking 9 samples of w(n)and with a cutoff frequency of 1.2 radians/sec.Using frequency sampling method, design a band pass FIR filter with the following specification. Sampling frequency Fs =8000 Hz, Cutoff frequency fc1 =1000Hz, fc2 =3000Hz.Determine the filter coefficients for N =7.                                                                                              8. Design an ideal high pass filter with Hd(ej _) = 1 ; _/4 _ | _| _ _= 0 ; | _| _ _/4 Using Hamming window with N =11                                                                   9. Determine the coefficients of a linear phase FIR filter of length N =15 which has a symmetric unit sample response and a frequency response that satisfies the conditions H (2 _k /15) = 1; for k = 0, 1, 2, 3

= 0.4 ; for k = 4= 0; for k = 5, 6,

7                                                        

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10. Design and implement linear phase FIR filter of length N =15 which has following unit sample sequence H(k) = 1 ; for k = 0, 1, 2, 3

     = 0 ; for k =4, 5, 6, 7                                   11. Convert the analog filter in to a digital filter whose system function isS + 0.2 H(s) = (S + 0.2)2 + 9.Use Impulse Invariant Transformation .Assume T=1sec                                                                                                               12. The Analog Transfer function H(s)= ----------------.Determine H(Z) .Using Impulse (S+1) (S+2) Invariant Transformation .Assume T=1sec .                13. Apply Bilinear Transformation to H(s)= ------------- with T=0.1 sec.   (S+2)(S+3)

UNIT-III: EFFECTS OF FINITE WORD LENGTHTWO MARKS:

1. What are the effects of finite word length in digital filters?2. List the errors which arise due to quantization process.3. Discuss the truncation error in quantization process.4. Write expression for variance of round-off quantization noise.5. What is sampling?6. Define limit cycle Oscillations, and list out the types.7. When zero limit cycle oscillation and Over flow limit cycle oscillation has occur?8. Why? Scaling is important in Finite word length effect.9. What are the differences between Fixed and Binary floating point number representation?10. What is the error range for Truncation and round-off process?

PART - B1. The output of an A/D is fed through a digital system whose system function isH(Z)=(1-_)z /(z-_), 0<_<1.Find the output noise power of the digital system.   2. The output of an A/D is fed through a digital system whose system function isH(Z)=0.6z/z-0.6. Find the output noise power of the digital system=8 bits        3. Discuss in detail about quantization effect in ADC of signals. Derive the expression for Pe(n) and SNR.                                                                                       4 a. Write short notes on limit cycle oscillation                                                       b. Explain in detail about signal scaling                                                                    5. A digital system is characterized by the difference equationY(n)=0.95y(n-1)+x(n).determine the dead band of the system when x(n)=0 and y(-1)=13.                                                                                                                

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6. Two first order filters are connected in cascaded whose system functions of theIndividual sections are H1(z)=1/(1-0.8z-¹ ) andH2(z)=1/(1-0.9z¹ ).Determine the Over all output noise power.                      

UNIT-IV: POWER SPECTRUM ESTIMATIONTWO MARKS

1. What is the need for spectral estimation?2. How can the energy density spectrum be determined?3. What is autocorrelation function?4. What is the relationship between autocorrelation and spectral density?5. Give the estimate of autocorrelation function and power density for random signals?6. Obtain the expression for mean and variance for the autocorrelation function of random signals.7. Define period gram.

PART - B1. Explain how DFT and FFT are useful in power spectral estimation.   2. Explain Power spectrum estimation using the Bartlett window.                      3. Obtain the mean and variance of the averaging modified period gram estimate.                                                                                                                                         4. How is the Blackman and Turkey method used in smoothing thePeriodogram?                                                                                                             5. Derive the mean and variance of the power spectral estimate of the Blackman andTurkey method.                                                                                                       6. What are the limitations of non-parametric methods in spectral estimation?   7. How the parametric methods overcome the limitations of the non-parametric methods?                                                                                                              

UNIT-V: DIGITAL SIGNAL PROCESSORSTWO MARKS:

1. What are the factors that influence the selection of DSPs.2 .What are the advantages and disadvantages of VLIW architecture?3. What is pipelining? and What are the stages of pipelining?4. What are the different buses of TMS 320C5x processor and list their functions

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5. List the various registers used with ARAU.6. What are the shift instructions in TMS 320 C5x.7. List the on-chip peripherals of C5x processor.

PART - B1. Explain in detail about the applications of PDSP   2. Explain briefly:(i). Von Neumann architecture    (ii). Harvard architecture    (iii).VLIW architecture   3. Explain in detail about(i). MAC unit(ii). Pipelining   4. Draw and explain the architecture of TMS 320C5x processor   5. Explain in detail about the Addressing modes of TMS 320C50   ********

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One Of The Best Blog For Engineering StudentsThis B log is for a l l Engineer ing students . you can co l lect your previous Year Univers i ty quest ion papers . P lease Request for your needs l ike QUESTION PAPER,LAB MANUAL,PROGRAM ETC SAME WILL BE UPDATED IN 24 HOURS. p lz use the search in b log to f ind your needs

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Tuesday, June 28, 2011

EC2304 Microprocessor and Microcontroller ANNA UNIVERSITY QUESTION BANK , QUESTION PAPER FOR UNIT1,UNIT2,UNIT3,UNIT4,UNIT5 IMPORTANT 2 MARKS AND 16 MARKS QUESTIONS

UNIT-1PART-A (2 MARKS)

1. How many memory locations are available in 8086 microprocessor?

2. What are the flags available in 8086 microprocessor?

3. What are the general purpose registers in 8086?

4. What are the functional units in 8086?

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5. What is the purpose of BIU?

6. What is the purpose of EU?

7. What is the purpose of segment register?

8. What are the segment registers in 8086?

9. What is the function of IP?

10. What is the function of control unit?

11. What is the use of base pointer register?

12. Mention the index registers of 8086.

13. What are the flags in 8086?  What are the various interrupts in 8086? 

14. What is meant by Maskable interrupts? 

15. What is Non-Maskable interrupts? 

16. Which interrupts are generally used for critical events

17. Give examples for Maskable interrupts? 

18. Give example for Non-Maskable interrupts? 

19. What is the Maximum clock frequency in 8086?

20.    What are the various segment registers in 8086? 

21.   Which Stack is used in 8086

22. What are the address lines for the software interrupts? 

23. What are the address lines for the hardware interrupts? -

24. Which Segment is used to store interrupt and subroutine return address registers? 

25. Which Flags can be set or reset by the programmer and also used to control the

operation of the processor? 

PART-B (16 MARKS)

1.      Draw the block diagram of 8086 mp and explain?      2.      Explain the architecture of Intel 8086 with the help of a block diagram?     3.      Describe the sequence of event that may occur during the different T state in the opcode

fetch machine cycle of 8086?          4.      List out the maskable and non maskable interrupts available in 8086?     5.      Explain the Maximum mode of operation of 8086.       6.      Write short notes on addressing memory.        7.      Explain the minimum mode of operation of 8086.      8.      Write notes on addressing input and output devices?     9.      Design an 8086 based system in minimum mode containing 64kb of EPROM and64kb of RAM 10.  Give the functions of NMI, BHE and TEST pins of 8086?      11.  Explain the various multiprocessor configurations.                  12.  Discuss in detail the various signal of 8086.       13.  Explain in detail about 8086 memory banks and associated signals for byte andword operations.

Page 17: 13

UNIT-IIPART-A (2 MARKS)

1. What is SIM and RIM instructions? 

2. Which is the tool used to connect the user and the computer?

3.    What is the position of the Stack Pointer after the PUSH instruction? 

4. What is the position of the Stack Pointer after the POP instruction? 

5. Logic calculations are done in which type of registers? 

6. What are the different functional units in 8086? 

7.   Give examples for Micro controllerWhat is meant by cross-compiler? 8.      What is the purpose of CLK signal in an 8086 system?9.      Differentiate the operating modes of 8086 processor?10.  What is a segment override prefix? Give an example.11.  What is the use of LATCH signal on the data lines?12.  What is the need for MN/MX pin in 8086 system?13.  What is the purpose of QUEUE in 8086 processor?14.  Give the operation of CBW and TEST instructions of 8086?15.  List few string instructions of 8086?16.  What is the use of LOCK prefix?17.  What is the purpose of REP prefix?18.  What are assembler directives?19.  What are the advantages of ALP?20.  Define a MACRO?21.  What is MACRO expansion?22.  What are the types of Multiprocessor configuration?23.  What is Co-processor? 

PART-B  (16MARKS)1.      Write an assembly language program to add two 2-digits BCD Number?     2.      Explain the instruction set of 8086?         3.      Write notes on status flag?            4.      Explain the similarities diff b/w subtract and compare instructions in 80865.      Write an assembly language program to convert on array of ASCII code to correspondingbinary

(hex) value. The ASCII array is stored starting from 4200H.The first element of thenumber of elements in the array.          

6.      Explain addressing modes of 8086?       7.      Write an ALP to Add two 8 bit numbers?         8.      How do the instructions of 8086 is classified based on their function and word length?

Give an example?           9.      Explain the 8086 Bit Manipulation instructions with an example for

each.    

Page 18: 13

10.  Write an 8086 program to convert BCD Data to Binary Data.    Explain the Relative addressing mode and the Implied addressingmode with its syntax. Use an example.    

UNIT-III  

PART-A (2 MARKS)

1.      Name the two modes of operation of DMA controller?2.      List the operating modes of 8253 timer.3.      Give the control word format of timer?4.      What is the use of USART?5.      Compare serial and parallel communication.6.      What is the use of Keyboard and display controller?7.      What are the functions performed by 8279?8.      What is PPI?9.      Give the control word format for I/O mode of 8255?10.  Give the BSR mode format of 8255.11.  What is the need for interrupt controller?12.  What are the registers present in 8259?13.  What are the applications of 8253?14.  Define interrupts.15.  Define DMA process.16.  Give the status word format of 8257. 17.  What are the types of serial data communication?18.  What is baud rate?19.  What is USART?20.  What are the features of 8279?21.  List some of the features of INTEL 8259 (Programmable Interrupt Controller)22.  What are the control words of 8251A and what are its functions ?

23. What are the display modes supported by the 8279 chip?

24. Name any two coprocessors and their use.

25. Give the format of program clock word of 8279 and mention its purpose.

26. Mention any two coprocessors and their use.

27. What is 2 key lockout and n key roolover?

28. Name the two types of CRT display systems.

29. What do you mean by leading edge and trailing edge problems in hexadecimal

keyboards?

30. State any two main functions of a CRT controller.

PART-B (16 MARKS)

1.      Draw the Block diagram and explain the operations of 8251 serial communication interface.       

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2.      Draw the Block diagram of 8279 and explain the functions of each block.     3.      Draw the block diagram of programmable interrupt controller and explain its operations.  4.      Discuss in detail about the operation of timer along with its various modes.     5.      Draw the Block diagram of DMA controller and explain its operations.  6.      Explain the 8279 keyboard and display controller with a neat sketch.7.      Describe the architecture and working of 8253 timer

UNIT –IVPART-A (2 MARKS)

1.      What is Micro controller?2.      What is the difference between microprocessor & micro controller?3.      List the addressing modes of 8051?4.      Explain the instructions used to access external RAM.5.      List the features of 8051 microcontroller?6.      Explain the interrupts of 8051 microcontroller?7.      What is the function of program counter in 8051?8.      Write about the jump statement?9.      Write about CALL statement in 8051?10.  Explain the operating mode0 of 8051 serial ports?11.  Explain the operating mode2 of 8051 serial ports?12.  Explain the mode3 of 8051 serial ports?

PART B (16 MARKS)

1.      With neat sketch explain the architecture of 8051 microcontroller.    2.      Draw the Pin Diagram of 8051 and explain the function of various3.      signals.    4.      List the various Instruction available in 8051 microcontroller.    5.      Explain the memory structure of 8051    6.      Explain the I/O port structure of 8051.    7.      Draw the pin configuration of 8051, Explain each pin.8.      Explain the instruction set of 8051.    9.      MICROPROCESSOR AND MICROCONTROLLER10.  Draw the format of SCON register. Explain different bits in it.    11.  Write an assembly language program to find “Fibonacci Series” of “N” given term.    12.  Write an assembly language program for stepper motor control.

UNIT –VPART-A (2 MARKS)

1.      How is the microcontroller used for the traffic light control application?Differentiate microprocessor from microcontroller in system design.

2.      What are the design considerations for washing machine control?3.      What are the advantages of 8051 microcontroller in washing machine control?4.      How is stepper motor interfaced with microcontroller?5.      What is I2C?

PART B (16 MARKS)

1.      Explain how microcontrollers and microprocessors can be used for thewashing machine control application. Use sketches.

Page 20: 13

2.      Explain with a neat sketch how microcontrollers and microprocessors canbe used for the stepper motor control application.

3.      Explain in the detail the process involved in the design of traffic light controller with example.

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EC2301 Digital Communication ANNA UNIVERSITY QUESTION BANK , QUESTION PAPER FOR UNIT1,UNIT2,UNIT3,UNIT4,UNIT5 IMPORTANT 2 MARKS AND 16 MARKS QUESTIONS

UNIT-1 : DIGITAL COMMUNICATION SYSTEM

Part A ( 2 Marks)1. Give the mathematical form of sampling process2. List out uses of sampling theorem3. Define instantaneous sampling4. What is anti alising effect5. What is PWM6. List out the types of Quantization7. Define bandwidth.8. Transfer 01101001 in to Manchester code9. What is noise consideration in PCM10. Define processing gain.

Part B1. Drive the expression for the sampling process in time domain.   2. What are all the types of sampling technique and explain about any two.   3. a. Explain the generation of PPM and PWM with neat circuit diagram.   b. Explain the quantization process with PCM block diagram.   4. Write brief notes on 1) TDM(8 )2) FDM   5. Compare DM with ADM and explain linear prediction filter.   

UNIT -2 : BASEBAND FORMATTING TECHNIQUES

Part A ( 2 Marks)1. Define matched filter2. What is decision device3. Draw the block diagram of base band binary data transmission system4. What is Nyquist channel5. Draw the frequency and time response of raised cosine spectrum6. What you mean by correlative level coding7. Define LMSA8. What is DFE9. List out the use of eye patterns

Page 29: 13

10.Define zero crossing effect

Part B1. Derive the expression for the matched filter and prove any one property.   2. Prove the effect ISI using necessary block diagram and design.   3. Write brief notes on Nyquist’s criterion for distortion less base band binary transmission.   4. Explain the six array PAL transmission.   5. Why do we adoptive equalizer and design any one type of adoptive equalizer.

UNIT – 3: BASEBAND CODING TECHNIQUES

Part - A ( 2 Marks)1. Define FSK2. Draw the Basic block diagram of FSK3. Define MFSK4. Draw the wave form of the MPSK5. What is MSK6. Define Non-coherent FSK7. Differentiate coherent FSK from Non-coherent FSK8. What do you mean by Probability error.9. Define Passband transmission.10 Draw the baseband signal.

Part B1. Derive the expression for the BPSK technique.   2. Explain the MFSK and derive the pe.   3. Draw the space diagram of MSK and explain about the same.   4. Derive the error probability expression for the MPSK.   5. Compare the all types of Passband transmission.   

Unit- 4: BASEBAND RECEPTION TECHNIQUES

Part A ( 2 Marks)1. Define the Channel coding2. List out the uses of the Channel Coding3. Differentiate Sourced coding from the Channel coding.4. Prove any two properties of Block Codes.5. What is syndrome?6. Define Code rate.7. What is BSC?8. Draw the channel diagram of the BPSK system9. What is turbo codes10. Define CRC.

Part B1. Explain the channel coding technique used in the Block codes.   2. What are all the message vectors can be extracted from thecode vector that was generated by 1+X+X3.   3. Explain the Viterbi algorithm for the detection of any twomessage vectors (One Word) from the code vectors that

Page 30: 13

were generated by (111), (101) and (011).   4. Explain the construction of Block Code andExplain how error syndrome is calculated.   5. Explain in detail about Orthogonal codes, Biorthogonal codes andTransorthogonal codes.   

UNIT- 5: BANDPASS SIGNAL TRANSMISSION AND RECEPTION

Part A ( 2 Marks)1) What are all the types of SSM2) What is the use of PN sequence3) List out the prosperities of PN sequence4) What is the processing gain of SSM.5) Define jamming margin6) Define FHSSM7) Define SFHSS.8) Define FFHSM.9) Draw the PN sequence generator for [6,4,2,1]10) What you mean by runs in PN sequence11) State the Gold Theorem.

Part B1. Generate the PN sequence for [5, 4, 3, 1] and prove the all properties of the same.   2. List out and prove the Properties of the PN sequence.   3. Explain the concept of DS/BPSK.   4. List out the uses of the FH. Explain the FH techniques with the frequency spectrum.   5. Write shorts notes on1. Probability Error.   2. Jamming Margin   3. (S/N) of the DS System.   

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year question paper

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bank and important 2 marks and 16 marks questions

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and important 2marks and five marks questions

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unit1 unit2 unit3 unit4 unit5

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important two marks, 16 marks questions

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important Two and 16 marks Questions

EC2252 Communication Theory Anna University Question bank and

important two marks, five mark questions

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