## Digital Signal Processing 5th MJ12 EC2302

REG . NO :
B.E./B.TECH. DEGREE EXAMINATION, MAY/JUNE 2012
FIFTH SEMESTER
ELECTRONICS AND COMMUNICATION ENGINEERING
EC 2302 / EC52 – DIGITAL SIGNAL PROCESSING
(REGULATION 2008)

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PART A – (10 X 2 = 20)

1. WHAT IS TWIDDLE FACTOR?
2. HOW MANY STAGES OF DECIMATIONS ARE REQUIRED IN THE CASE OF A 64 POINT RADIX 2 DIT FFT ALGORITHM?
3. WHY IS THE BUTTERWORTH RESPONSE CALLED A MAXIMALLY FLAT RESPONSE?
4. WHAT IS FREQUENCY WARPING?
5. WHAT ARE THE FEATURES OF FIR FILTER DESIGN USING THE KAISER’S APPROACH?
6. DRAW THE DIRECT FORM IMPLEMENTATION OF THE FIR SYSTEM HAVING DIFFERENCE EQUATION.
y(n) = x(n) – 2x(n-1) + 3x(n-2) – 10x(n-6)
7. WHAT ARE LIMIT CYCLE OSCILLATIONS?
8. WHAT IS DEAD – BAND OF A FILTER?
9. WHAT IS DECIMATION?
10. FIND THE EXPRESSION FOR THE FOLLOWING MULTIRATE SYSTEMS.

PART B – (5 X 16=80)

11. (a) (i) DIFFERENTIATE DFT FROM DTFT. (4)
(ii) COMPUTE AN 8 POINT DFT OF THE SEQUENCE  x(n)  = (1,0,1,-1,1,-1,0,1)(12)
[OR]
(b) (i) PROVE THAT FFT ALGORITHM HELPS IN REDUCING THE NUMBER OF COMPUTATIONS INVOLVED IN DFT COMPUTATION.(6)
(ii) COMPUTE A 8 POINT DFT OF THE SEQUENCE USING DIT – FFT ALGORITHM      x(n) = (1,2,3,2,1,0)    (10)

12. (a) (i) EXPLAIN THE PROCEDURE FOR DESIGNING ANALOG FILTERS USING THE CHEBYSHEV APPROXIMATION.(6)
(ii)  CONVERT THE FOLLOWING ANALOG TRANSFER FUNCTION IN TO DIGITAL USING IMPULSE INVARIANT MAPPING WITH T = 1 sec.      (10)
[OR]
(b)  (i) DESIGN A DIGITAL SECOND ORDER LOW – PASS BUTTERWORTH FILTER WITH CUT-OFF FREQUENCY  2200 Hz USING BILINEAR TRANSFORMATION. SAMPLING RATE IS 8000 Hz.         (8)
(ii) DETERMINE THE CASCADE FORM AND PARALLEL FORM IMPLEMENTATION OF THE SYSTEM GOVERNED BY THE TRANSFER FUNCTION
(1 + Z-1)(1 – 5Z-1 – Z-2)
H(Z)= (1 +2Z-1 + Z-2)(1 + Z-1 + Z-2)      (8)

13. (a) DESIGN AN FIR LOW PASS DIGITAL FILTER BY USING THE FREQUENCY SAMPLING METHOD FOR THE FOLLOWING SPECIFICATIONS

CUTOFF FREQUENCY = 1500Hz
SAMPLING FREQUENCY = 15000 Hz
ORDER OF THE FILTER : N = 10
FILTER LENGTH REQUIRED L = N  + 1 = 11    (16)
[OR]
(b) (i) EXPLAIN WITH NEAT SKETCH THE IMPLEMENTATION OF FIR FILTERS IN THE
(1) DIRECT FORM
(2) LATTICE FORM   (6)
(ii) DESIGN A DIGITAL FIR BAND – PASS FILTER WITH LOWER CUT-OFF FREQUENCY 2000 Hz AND UPPER CUT-OFF FREQUENCY 3200 Hz USING HAMMING WINDOW OF LENGTH N = 7. SAMPLING RATE IS 10000 Hz.       (10)

14. (a) (i) WHAT IS QUANTIZATION OF ANALOG SIGNALS? DERIVE THE EXPRESSION FOR THE QUANTIZATION ERROR.
(ii) EXPLAIN COEFFICIENT QUANTIZATION IN IIR FILTER.
[OR]
(b) (i) HOW TO PREVENT LIMIT CYCLE OSCILLATION ? EXPLAIN.
(ii)WHAT IS MEANT BY SIGNAL SCALING? EXPLAIN.

15. (a) (i) EXPLAIN SAMPLING RATE CONVERSION BY A RATIONAL FACTOR AND DERIVE INPUT OUTPUT RELATION IN BOTH TIME AND FREQUENCY DOMAIN.(10)
(ii) EXPLAIN THE MULTISTAGE IMPLEMENTATION OF SAMPLING RATE CONVERSION.(6)
[OR]
(b) (i) EXPLAIN THE DESIGN OF NARROW BAND FILTER USING SAMPLING RATE CONVERSION. (8)
(ii) EXPLAIN THE APPLICATION OF SAMPLING RATE CONVERSION IN SUB – BAND CODING. (8)

## Microprocessor And Microcontroller 6th ND11 EE2354

Anna University
B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2011.
Sixth Semester
Electrical and Electronics Engineering
EE 2354 - MICROPROCESSORS AND MICROCONTROLLER
(Regulation 2008)

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PART A — (10 × 2 = 20 marks)

1. Draw the schematic of latching low-order address bus in 8085 microprocessor.
2. If the stack segment register contains 3000h and stack pointer register contains 8434h, what is the physical address of the top of the stack in 8086 microprocessor?
3. Why do we need look-up table?
4. How are the 8085 instructions classified according to the functional categories?
5. Draw the ‘Mode Word’ format of 8251 USART.
6. State the use of ISR and PR registers in 8259 PIC.
7. List the on-chip peripherals of 8051 microcontroller.
8. What are the addressing modes of 8051 microcontroller?
9. Why do we need opto-isolator circuit between microcontroller and the Stepper motor?
10. Mention the I/O instructions of 8051 microcontroller.

PART B — (5 × 16 = 80 marks)

11. (a) (i) Explain in detail the 8085 interrupt structure. (8)
(ii) Draw the timing diagram for IN and OUT instruction of 8085 and explain. (8)
Or
(b) (i) Draw the internal block diagram of 8086 and explain the bus interface unit and execution unit. (8)
(ii) How address decoding is done in memory Interface. (8)

12. (a) (i) Write a program to count from 0 to 9 with one second delay between each count. At the count of 9, the counter should reset itself to 0 and repeat the sequence continuously. Assume the clock frequency is 1 MHz. (8)
(ii) Write a program with a flowchart to multiply two 8-bit numbers.(8)
Or
(b) (i) Compare the similarities and differences of CALL and RET instructions with PUSH and POP instructions. (8)
(ii) Sixteen bytes are stored in memory locations at XX50h to XX5Fh. Transfer the entire block of data to new memory locations starting at XX70h. (8)

13. (a) (i) Explain the operating modes of 8255 programmable peripheral interface. (8)
(ii) Draw the logical block diagram of 8279 keyboard display controller and explain. (8)
Or
(b) (i) Draw the control word of 8253 timer/counter and explain the operating modes of 8253 timer/counter. (8)
(ii) Why do we need A/D converter and D/A converter? Draw the block diagram to interface 8085 microprocessor with A/D convertor and D/A convertor. (8)

14. (a) (i) Explain the program memory and data memory structure of 8051 microcontroller. (8)
(ii) Draw the pin diagram of 8051 microcontroller and explain its port structure. (8)
Or
(b) (i) Draw the TMOD register format and explain the different operating modes of timer in 8051 microcontroller. (8)
(ii) Explain how serial communication is performed in 8051 microcontroller. (8)

15. (a) (i) Explain with a program to rotate the stepper motor in both clockwise and anticlockwise direction using 8051 microcontroller. (8)
(ii) How to interface a 7 segment display using 8051 microcontroller. (8)
Or
(b) (i) How 8051 is used in washing machine control? (8)
(ii) How do you interface a 4 × 4 matrix keyboard using 8051 microcontroller? (8)

## Engineering Economics And Financial Accounting 5th AM11 MG2452

Anna University
B.E./B.Tech. DEGREE EXAMINATION, APRIL/MAY 2011
Fifth Semester
Information Technology
MG 2452 - ENGINEERING ECONOMICS AND FINANCIAL ACCOUNTING
(Regulation 2008)

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PART A — (10 × 2 = 20 marks)

1. Define managerial economics.
2. How does managerial economics help in Business decision making?
3. List out the various demand determinants.
4. What is sales forecasting?
5. State any two managerial uses of production function.
6. What is a cost sheet?
7. How is price fixed under perfect competitive situation?
8. What is penetration pricing?
9. What is the information needed for the evaluation of capital budgeting decisions?
10. What is pay back or pay off period?

PART B — (5 × 16 = 80 marks)

11. (a) Analyze the scope of managerial economics and its relationship with other disciplines.
Or
(b) What are isoquants? What are its types? What are the properties of isoquants?

12. (a) What is concept of Elasticity of demand? Discuss the various types of elasticity of demand with illustrations.
Or
(b) Discuss various methods of demand forecasting and their merits and de-merits.

13. (a) Discuss cost-output relationship in both short-run and long-run.
Or
(b) What are all the factors that determine the price of the product?
Explain their influence on the price of the product?

14. (a) Following is the Balance Sheet of M/s. ………………. Ltd.
Liabilities Amount
in Rs.
Assets Amount
in Rs.
Equity share capital 1,25,000 Fixed assets 2,30,000
10% preference share capital
75,000 Cash 20,000
8% Debentures 50,000 Bills
receivables
40,000
Reserves and surplus 60,000 Debtors 25,000
Overdraft 20,000 Stock 35,000
Creditors 15.000
Outstanding expenses 5,000
Total 3,50,000 Total 3,50,000
Net profit before interest and tax = Rs. 20,000.
Calculate :
(i) Current ratio
(ii) Liquidity ratio
(iii) Proprietary ratio
(iv) Debt-Equity ratio.
Or
(b) From the following balances sheets of Ranjit Ltd. prepare fund flow statement.
Balance Sheet (Figures in ‘000)

15. (a) Find out accounting rate of return and suggest to the management regarding the selection of the proposals if the desired rate of return is 20%. Assume that there is no scrap value.
Particulars Proposals A (in Rs.) Proposal B (in Rs. )
Investment 10,000 20,000
Expected life in years 3 4
Net Income – Year 1 3,000 10,000
Year 2 2,500 7,500
Year 3 500 5,000
Year 4 – 2,500
Or
(b) M/s. Sreedharan Ltd. is considering the purchase of a machine which cost Rs. 1,50,000. Expected cash flows from the above investment are as follows :
Year Cash flow in Rs.
1 50,000
2 50,000
3 50,000
4 50,000
5 50,000
Assuming the discount rate as 10% suggest whether purchase of that machine is worth or not?

## Microprocessors And Microcontrollers 4th MJ12 CS22522

Question Paper Code : 10264
B.E/B.Tech. DEGREE EXAMINATION, MAY/JUNE 2012
Fourth Semester
Computer Science and Engineering
CS 2252/141402/CS 42/EC 1257/10144 CS 403/080250010 –MICROPROCESSORS AND MICROCONTROLLERS
(Common to Information Technology)
(Regulation 2008)

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PART A – ( 10 x 2 = 20 marks )

1. How many memory locations can be addressed by 8085 microprocessor?
2. Give an example for direct and indirect addressing modes of 8085.
3. What are called as assembler directives? Give two examples.
4. What is BIOS function call in 8086 µ p?
5. Compare closely coupled configuration features with loosely coupled configuration features.
6. List any four 8087 data formats.
7. Why a latch is used for an O/P port, but a tri-state buffer can be used for an input port?
8. List the six modes of timer.
9. What is the size of the on-chip program memory and on-chip data memory of 8051 microcontroller?
10. List the features of the parallel ports of 8051 microcontroller.

PART B – ( 5 x 16 = 80 marks )

11. (a) (i) Explain the execution of the instruction MVI A, 32h with a timing diagram. (8)
(ii) Write an 8085 Assembly language program to multiply two 8-bit number, which is sorted in the memory location 4500h and 4501h. Store the product in the subsequent memory locations? (8)
OR
(b) (i) Explain the different addressing modes in 8085 microprocessor. Give two examples for each addressing mode. (8)
(ii) Write an 8085 assembly language program to find the largest 8-bit number among the five numbers which are stored in the memory locations 4200h to 4204h.(8)

12. (a) (i) Draw the architectural block diagram of 8086 microprocessor and explain. (8)
(ii) Explain how to pass parameters to macros?(8)
OR
(b) (i) Explain the interrupt structure of an 8086 microprocessor with 8086 interrupt-pointer table. (8)
(ii) Write an 8086 assembly language program to read in 100 samples of data at 1-ms intervals. (8)

13. (a) (i) Draw the 8087 interval architecture and explain.(8)
(ii) Give two examples of 8087 data transfer instructions, arithmetic instructions,
processor control instructions and transcendental instructions.(8)
OR
(b) (i) Draw the architecture of 8089 I/O processor and explain.(8)
(ii) Explain how I/O processor communicates between the CPU and I/O peripherals with an example.(8)

14. (a) (i) Explain the operating modes of 8255 programmable peripheral interface.(8)
(ii) Draw the control word format of 8254 programmable interval timer and explain.(8)
OR
(b) (i) Draw the architectural block diagram of 8259 Programmable interrupt controller and
explain.(8)
(ii) Write a program to make the stepper motor to rotate both clockwise and counter clock wise direction. (8)

15. (a) (i) Draw the architectural block diagram of 8051 microcontroller and explain.(8)
(ii) Draw the circuit diagram to interface an LCD with microcontroller and explain how to display the data using LCD. (8)
OR
(b) (i) Draw the circuit diagram to interface a keyboard with microcontroller and explain how microcontroller recognizes the key-press.(8)
(ii) Program the on-chip timer in 8051 to be an event counter. Use model and display the binary count on P1. Set the initial count to be Zero.(8)

## Microprocessors and Microcontrollers 4th ND11 CS2252

B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2011.
Fourth Semester
Computer Science and Engineering
CS 2252 – MICROPROCESSORS AND MICROCONTROLLERS
(Common to Information Technology)
(Regulation 2008)

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PART A — (10 × 2 = 20 marks)

1. Identify the addressing mode of the following 8085 instruction.
(a) SHLD 2500H
(b) DCR E
2. Name the machine cycles needed to execute the 8085 instruction MVI B,4FH.
3. What are the general purpose registers in 8086?
4. Give the importance of the assembler directive EVEN.
5. What are the features of closely coupled multiprocessor systems?
6. What do you mean by CCW in an I/O processor?
7. How many address lines and data lines are necessary for accessing 32Kx8 memory?
8. What is DMA?
9. What are the differences between a microprocessor and a microcontroller?
10. How is the selection of particular register bank done in 8051?

PART B —(5 × 16 = 80 marks)

11. (a) Explain the Intel 8085 Microprocessor architecture with neat diagram.(16)
Or
(b) (i) Discuss the different groups of instruction set of 8085 with suitable examples. (8)
(ii) Write an 8085 ALP to find the largest number in a array of 10 data. Starting address of the array of data is 4250H. (8)

12. (a) (i) Explain the various addressing modes of 8086 processor with suitable examples. (10)
(ii) Compare macro and procedure. (6)
Or
(b) (i) Write an 8086 ALP to find the sum of numbers in the array of 12 elements. (8)
(ii) What is BIOS? Discuss the various BIOS function calls. (8)

13. (a) (i) Draw the block diagram of 8087 numeric Data processor and explain. (10)
(ii) Discuss briefly the data types supported by 8087 Numeric Data Processor. (6)
Or
(b) (i) Explain the block diagram of 8089 I/O processor. (10)
(ii) Discuss the schemes used to solve the bus arbitration problem in multiprocessors. (6)

14. (a) Explain the 8251 USART with neat block diagram. Also explain its mode word, command word and status word. (16)
Or
(b) Describe the block diagram of 8259 Programmable Interrupt Controller and its priority modes. (16)

15. (a) (i) Draw the pin diagram of 8051 microcontroller and explain the functions of each pin. (10)
(ii) Discuss briefly the various registers in 8051 microcontroller. (6)
Or
(b) (i) Explain the interfacing of 4×4 matrix keyboard to the 8051 microcontroller with neat diagram. (10)
(ii) Briefly write about the IE and IP register in 8051 microcontroller.(6)

## Microprocessor and Microcontroller 4th AM10 CS2252

B.E./B.Tech. DEGREE EXAMINATION, APRIL/MAY 2010.
Fourth Semester
Computer Science and Engineering
CS2252 - MICROPROCESSORS AND MICRO CONTROLLERS
(Common to Information Technology)
(Regulation 2008)

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PART A- (10 X 2= 20 marks)

1. Assume that the accumulator contains data types 82H and the instruction MOV C, A (4FH) is fetched. List the steps in encoding and executing the instruction.
2. What are the second bytes in the instruction IN and OUT of 8085 microprocessor?
3. Draw the 8086 flag register format.
4. List different types of 8086 hardware interrupts.
5. Compare closely coupled configuration with loosely coupled configuration.
6. Mention the need for co- processor in a microprocessor based system.
7. Can an input port and an output port have the same port address? Justify.
8. Why is each channel in DMA controller restricted to 16K bytes of data transfer?
9. With XTAL = 11.0592 MHz, what value should be loaded into TH1 to have 9600 baud rate?
10. How do you select the register bank in 8051 micro-controller?

PART B- (5 X 16 = 80 Marks)

11. (a) (i) Write an 8085 assembly language program with flowchart for the following: Six bytes are stored in memory locations starting at XX50H. Add all the data bytes. Use register B to save any carry generated while adding the data bytes. Store the sum at two consecutive memory locations, XX70H and XX71H. Data (H): A2, FA, DF, E5, 98, 8B. (8 Marks)
(ii) Write a program to generate a continuous square wave with the period of 500 microseconds. Assume the system clock period is 325ns and use bit D0 to output the square wave. (8 Marks)
(Or)
(b) (i) Explain the following 8085 instructions with an example JP, JPO, CM, RPE, DAA, XCHG, SPHL and PCHL. (8 Marks)
(ii) Draw the timing diagram for the instruction MVI A, 32h and OUT 01h. (8 Marks)

12. (a) (i) Draw the internal block diagram of 8086 microprocessor and explain. (8 Marks)
(ii) Explain any eight assembler directives of 8086 microprocessor. (8 Marks)
(Or)
(b) (i) Give three examples for the following 8086 microprocessor instructions: String Instructions, Process Control Instruction, Program Execution Transfer Instructions and Bit manipulation Instructions. (12 Marks)
(ii)How does one define and call macro parameters of 886 microprocessor? (4 Marks)

13. (a) (i) Draw the internal block diagram of 8087 Co- processor and explain it with 8087 control word and status word formats. (12 Marks)
(ii) Give two examples for packed decimal data transfers and integer data transfers of an 8087 co- processor. (4 Marks)
(Or)
(b) Draw the architecture of 8089 I/O co- processor and explain. (16 Marks)

14. (a) Draw the block diagram of 8279 keyboard/ Display controller and explain hoe to interface the Hex Key pad and 7- segment LEDs using 8279. (16 Marks)
(Or)
(b) (i) Draw the functional block diagram of 8254 timer and explain the different modes of operation. (8 Marks)
(ii) Draw the block diagram of 8259A and explain how to program 8259A. (8 Marks)

15. (a) (i) Explain the memory structure of an 8051 Micro-controller. (8 Marks)
(ii) How does one interface a 16 X 2 LCD Display using 8051 Micro-controller? (8 Marks)
(Or)
(b) (i) Explain the on- chip timer modes of an 8051 Micro-controller. (8 Marks)
(ii) Explain how interface an 8- bit ADC with 8051 Micro-controller. (8 Marks)

## Microprocessor And Microcontrollers 5th ND12 EC2304

B.E./B.TECH. DEGREE EXAMINATION, NOV / DEC 2012
FIFTH SEMESTER
ELECTRONICS AND COMMUNICATION ENGINEERING
EC 2304 / EC 54 – MICROPROCESSOR AND MICROCONTROLLERS
(REGULATION 2008)
(COMMON TO PTEC 2304 – MICROPROCESSOR AND MICROCOTROLLERS
FOR B.E. (PART-TIME) FIFTH SEMESTER ELECTRONICS AND
COMMUNICATION ENGINEERING – REGULATION 2009)

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PART A – (10 X 2 = 20 MARKS)

1. How clock signal is generated in 8086 microprocessor?
2. State the function of queue status lines qs0 and qs1 in 8086 microprocessor?
3. How will carry and zero flags reflect the result of the instruction cmp bx, cx?
4.give any four miscellaneous instructions in 16 bit microprocessor.
5. List the four display modes of 8279 keyboad / display controller.
6. What are the enhanced features of 8254 programmable timer compared to 8253?
7. Specify the size of memory systems used in 8051 microcontroller.
8. Mention the different operand types used in 8051 microcontroller.
9. State the uses of i2c bus standard.
10. What are the use of pwm in motor control using microcontroller.

Part b – (5 x 16 = 80 marks)

11. (a) (i) explain the architecture of 8086 micoprocessor. (8)
(ii) discuss about the different data transfer schemes with examples. (8)
[or]
(b) describe the maximum mode signals , bus cycles and maximum mode system configuration of 8086 microprocessor in detail. (16)

12. (a) (i) discuss about the 8086 instruction used for transferring data between registers , memory , stacks , and i/o devices.(8)
(ii) write a program based on 8086 instruction set to multiply a constant value to a sequence of data from 1 to n stored in memory. (8)
[or]
(b) (i) write a program based on 8086 instruction set to compute the average of ‘n’ number of bytes stored in the memory. (8)
(ii) discuss about the various assembler directive in 8086 microprocessor programming. (8)

13. (a) explain the programming and operating modes of 8255 ppi in detail. (16)
[or]
(b) (i) with diagram, explain the operation or r-2r method of d/a converter.(8)
(ii) explain the function of crt terminal interface. (8)

14. (a) (i) explain the parallel port architecture of 8051 microcontroller. (8)
(ii) explain the operation of serial port with associated register. (8)
[or]
(b) (i) with example, explain the arithmetic and branching instruction of 8051 microcontroller. (8)
(ii) write a program based on 8051 instruction set to pack array of unpacked bcd digits (8)

15. (a) with neat sketch, explain the microprocessor based traffic light control system. (16)
[or]
(b) describe in detail the microcontroller based system design with an example. (16)

## Protection And Switch Gear 7th ND11 EE2402

Anna University
B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2011.
Seventh Semester
Electrical and Electronics Engineering
EE 2402 - PROTECTION AND SWITCHGEAR
(Regulation 2008)

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PART A — (10 × 2 = 20 marks)

1. What is surge absorber? How do they differ from surge diverter?
2. Define the term ‘‘Insulation Coordination”.
3. Compare Static and Electromagnetic relay.
4. A relay is connected to 400/5 ratio current transformer with current setting of 150%. Calculate the Plug Setting Multiplier when circuit carries a fault current of 4000 A.
5. Explain the secondary of current transformer should not be open.
6. What is meant by time-graded system protection?
7. Distinguish between recovery voltage and restriking voltage.
8. List the factors affecting the transient recovery voltage.
9. Give the advantage of SF6 circuit breaker over Air blast circuit breaker.
10. What are the basic requirements of circuit breaker?

PART B — (5 ×16 = 80 marks)

11. (a) Discuss and compare the various methods of neutral earthing. (16)
Or
(b) (i) Describe the essential qualities of a protective relaying. (8)
(ii) Briefly explain the various methods of overvoltage protection of overhead transmission line. (8)

12. (a) Describe the construction and operation of an inductive type directional overcurrent relay with a neat diagram. Also explain its operational characteristics. (16)
Or
(b) Explain the principle of distance relays stating clearly the difference between impedance relay, reactance and mho relay. Indicate the difference on R-X diagrams and show where each type is suitable. (16)

13. (a) (i) Explain the factors which cause difficulty in applying Merz-Price circulating current principle to a power transformers. (8)
(ii) A three phase transformer of 220/11000 Line Volts is Connected in star / delta. The protective transformers on 220 V side have a current ratio of 600/5. What should be the current transformer ratio on 11000 V side? (8)
Or
(b) Describe the differential pilot wire method of protection of feeder. (16)

14. (a) (i) Explain how arc is initiated and sustained when the circuit breaker contacts break. (6)
(ii) Explain in detail the various methods of arc extinction in a circuit breaker. (10)
Or
(b) (i) What is current Chopping? Explain how can the effect of current chopping be minimized? (8)

(ii) Derive an expression for the Rate of Rise of Restriking Voltage (RRRV) in a C.B. (8)

15. (a) Explain with a neat sketch, the construction and working of minimum oil circuit breaker. Also give its merits and demerits. (16)
Or
(b) (i) Describe the various types of rating of a circuit breaker. (8)
(ii) Describe the various methods of testing of circuit breaker. (8)

## Operating Systems 4th ND11 CS2254

B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2011.
Fourth Semester
Computer Science and Engineering
CS 2254 - OPERATING SYSTEMS
(Common to Information Technology)
(Regulation 2008)

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PART A — (10 × 2 = 20 marks)

1. What does the CPU do when there are no user programs to run?
2. What is the principal advantage of the multiprogramming?
3. Define Mutual Exclusion.
4. What is Semaphore?
5. What is page frame?
6. What is internal fragmentation?
7. A direct or sequential access has a fixed file-size S-byte record. At what logical location, the first byte of record N will start?
8. Give an example of a situation where variable-size records would be useful.
9. Writable CD-ROM media are available in both 650 MB and 700 MB versions. What is the principle disadvantage, other than cost, of the 700MB version?
10. Which disk scheduling algorithm would be best to optimize theperformance of a RAM disk?

PART B — (5 × 16 = 80 marks)

11. (a) (i) Explain the important services of an operating system.(8)
(ii) Discuss in detail the concept of virtual machines, with neat sketch.(8)
Or
(b) Write detailed notes on process control and file manipulation. (16)

12. (a) Explain in detail about any two CPU scheduling algorithms with suitable examples. (16)
Or
(b) (i) What is a deadlock? What are the necessary conditions for adeadlock to occur? (6)
(ii) How can a system recover from deadlock? (10)

13. (a) Explain about contiguous memory allocation with neat diagram.(16)
Or
(b) What do you mean by paging? Discuss in detail about structure of page tables with appropriate examples. (16)

14. (a) Write a detailed note on various file access methods with neat sketch.(16)
Or
(b) Discuss the different file allocation methods with suitable example. (16)

15. (a) Describe the important concepts of application I/O interface. (16)
Or
(b) Explain any two disk scheduling algorithms with suitable example. (16)

## Principle of Compiler Design 6th ND11 CS2352

Anna University
B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2011.
Sixth Semester
Computer Science and Engineering
CS 2352 - PRINCIPLES OF COMPILER DESIGN
(Regulation 2008)

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PART A — (10 × 2 = 20 marks)

1. What is the role of lexical analyzer?
2. Give the transition diagram for an identifier.
3. Define handle pruning.
4. Mention the two rules for type checking.
5. Construct the syntax tree for the following assignment statement: a:=b*-
c+b*-c.
6. What are the types of three address statements?
7. Define basic blocks and flow graphs.
8. What is DAG?
9. List out the criterias for code improving transformations.
10. When does dangling reference occur?

PART B — (5 × 16 = 80 marks)

11. (a) (i) Describe the various phases of compiler and trace it with the program segment (position: = initial + rate * 60). (10)
(ii) State the complier construction tools. Explain them. (6)
Or
(b) (i) Explain briefly about input buffering in reading the source program for finding the tokens. (8)
(ii) Construct the minimized DFA for the regular expression (0+1)*(0+1) 10. (8)

12. (a) Construct a canonical parsing table for the grammar given below.
Also explain the algorithm used. (16)
E ? E + T E ? T T ? T * F T ? F
F ? (E) F ? id .
Or
(b) What are the different storage allocation strategies? Explain. (16)

13. (a) (i) Write down the translation scheme to generate code for assignment statement. Use the scheme for generating three address code for the assignment statement g: = a+b-c*d. (8)
(ii) Describe the various methods of implementing three-address statements. (8)
Or
(b) (i) How can Back patching be used to generate code for Boolean expressions and flow of control statements? (10)
(ii) Write a short note on procedures calls. (6)

14. (a) (i) Discuss the issues in the design of code generator. (10)
(ii) Explain the structure-preserving transformations for basic blocks. (6)
Or
(b) (i) Explain in detail about the simple code generator. (8)
(ii) Discuss briefly about the Peephole optimization. (8)

15. (a) Describe in detail the principal sources of optimization. (16)
Or
(b) (i) Explain in detail optimization of basic blocks with example. (8)
(ii) Write about Data flow analysis of structural programs. (8)

## Software Engineering and Quality Assurance 4th ND11 IT 2251

Anna University
B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2011.
Fourth Semester
Information Technology
IT 2251 - SOFTWARE ENGINEERING AND QUALITY ASSURANCE
(Regulation 2008)

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PART A — (10 × 2 = 20 marks)

1. What is the scope of Managerial Economics?
2. Name the concepts involved in Decision Making.
3. What are the limitations of Elasticity of Demand?
4. Define Law of Supply.
5. What is the Significance of Isoquants?
6. Write the difference between explicit and implicit costs.
7. What is penetration pricing?
8. Define cross subsidization.
9. What is Bank Overdraft?
10. Write down the advantages and disadvantages of IRR method.

PART B — (5 × 16 = 80 marks)

11. (a) (i) Explain the objectives of the firm and analyze different theories governing the same. (8)
(ii) Write short notes on programmed and non-programmed decisions. (8)
Or
(b) (i) How can you make decision process more effective? (8)
(ii) Enumerate the nature of Managerial Economics. (8)

12. (a) (i) In 1999, the demand for electronic gadgets was 10 million per annum and the price was Rs. 200 each. In 2000, the price rose to Rs. 400 (because of latest technology), the demand fell to 8
million. Calculate Arc Edp. How do you interpret it? (Edp – Price Elasticity of Demand) (8)
(ii) Discuss the significance of Elasticity of Demand. (8)
Or
(b) (i) Explain and Enumerate the factors determining Elasticity of Supply. (10)

(ii) Explain how supply and demand determine the equilibrium price. (6)

13. (a) (i) Explain the concept of Returns on investments with appropriate examples. (8)
(ii) Discuss the economies of scale that can accrue to a firm. (8)
Or
(b) Enumerate the features of short run average cost curve and long range average cost curve. (16)

14. (a) (i) Explain any four methods of pricing based on Strategy. (8)
(ii) Name the five pricing strategies in times of stiff price competition. (8)
Or
(b) (i) Why is pricing significant in the context of business? Explain. (10)
(ii) Discuss any three pricing methods that are followed in real-life business situation. (6)

15. (a) (i) Explain the limitations of financial statements. (8)
(ii) Illustrate a profit and loss statement with assumed data. (8)
Or
(b) Explain the following evaluation methods with illustrations :
(i) Average Rate or Return
(ii) Pay Back Period
(iii) Net Present Value. (16)

## Engineering Economics and Financial Accounting 7th ND11 MG2452

Anna University
B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2011.
Seventh Semester
Computer Science and Engineering
MG 2452 — ENGINEERING ECONOMICS AND FINANCIAL ACCOUNTING
(Common to Fifth Semester – Information Technology)
(Regulation 2008)

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PART A — (10 × 2 = 20 marks)

1. What is the scope of Managerial Economics?
2. Name the concepts involved in Decision Making.
3. What are the limitations of Elasticity of Demand?
4. Define Law of Supply.
5. What is the Significance of Isoquants?
6. Write the difference between explicit and implicit costs.
7. What is penetration pricing?
8. Define cross subsidization.
9. What is Bank Overdraft?
10. Write down the advantages and disadvantages of IRR method.

PART B — (5 × 16 = 80 marks)

11. (a) (i) Explain the objectives of the firm and analyze different theories governing the same. (8)
(ii) Write short notes on programmed and non-programmed decisions. (8)
Or
(b) (i) How can you make decision process more effective? (8)
(ii) Enumerate the nature of Managerial Economics. (8)

12. (a) (i) In 1999, the demand for electronic gadgets was 10 million per annum and the price was Rs. 200 each. In 2000, the price rose to Rs. 400 (because of latest technology), the demand fell to 8
million. Calculate Arc Edp. How do you interpret it? (Edp – Price Elasticity of Demand) (8)
(ii) Discuss the significance of Elasticity of Demand. (8)
Or
(b) (i) Explain and Enumerate the factors determining Elasticity of Supply. (10)

(ii) Explain how supply and demand determine the equilibrium price. (6)

13. (a) (i) Explain the concept of Returns on investments with appropriate examples. (8)
(ii) Discuss the economies of scale that can accrue to a firm. (8)
Or
(b) Enumerate the features of short run average cost curve and long range average cost curve. (16)

14. (a) (i) Explain any four methods of pricing based on Strategy. (8)
(ii) Name the five pricing strategies in times of stiff price competition. (8)
Or
(b) (i) Why is pricing significant in the context of business? Explain. (10)
(ii) Discuss any three pricing methods that are followed in real-life business situation. (6)

15. (a) (i) Explain the limitations of financial statements. (8)
(ii) Illustrate a profit and loss statement with assumed data. (8)
Or
(b) Explain the following evaluation methods with illustrations :
(i) Average Rate or Return
(ii) Pay Back Period
(iii) Net Present Value. (16)

## Database Management Systems 4th ND11 CS2255

Anna University
Computer science engineering and Information technology
Regulation 2008
DATABASE MANAGEMENT SYSTEMS - CS 2255
B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2011

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PART A — (10 × 2 = 20 marks)

1. What is a data model?
2. With an example explain what a derived attribute is?
3. Consider the following relation :
EMP (ENO, NAME, DATE_OF_BIRTH, SEX, DATE_OF_JOINING, BASIC_PAY, DEPT) Develop an SQL query that will find and display the average BASIC_PAY in each DEPT.
4. List the two types of embedded SQL SELECT statements.
5. Consider the following relation :
R (A, B, C, D, E)
The primary key of the relation is AB. The following functional
dependencies hold :
A ?C
B ?D
AB ? E
Is the above relation in second normal form?
6. Consider the following relation : R(A, B, C, D)
The primary key of the relation is A. The following functional dependencies hold :
A ?B,C
B ?D
Is the above relation in third normal form?
7. List the two commonly used Concurrency Control techniques.
8. List the SQL statements used for transaction control.
9. What are ordered indices?
10. Distinguish between sparse index and dense index.

PART B — (5 × 16 = 80 marks)

11. (a) (i) Construct an E-R diagram for a car-insurance company whose customers own one or more cars each. Each car has associated with it zero to any number of recorded accidents. State any assumptions you make. (6)
(ii) A university registrar’s office maintains data about the following entities :
(1) Courses, including number, title, credits, syllabus, and prerequisites;
(2) Course offerings, including course number, year,
semester, section number, instructor, timings, and classroom;
(3) Students, including student-id, name, and program; and
(4) Instructors, including identification number, name, department, and title. Further, the enrollment of students in courses and grades awarded to students in each course they are enrolled for must be appropriately modeled. Construct an E-R diagram for the registrar’s office. Document all assumptions that you make about the mapping constraints. (10)
Or
(b) (i) With a neat sketch discuss the three-schema architecture of a DBMS. (8)
(ii) What is aggregation in an ER model? Develop an ER diagram using aggregation that captures the following information :
Employees work for projects. An employee working for a particular project uses various machinery. Assume necessary attributes. State any assumptions you make. Also discuss about the ER diagram you have designed. (2 + 6)

12. (a) (i) Explain the distinctions among the terms primary key, candidate key, and super key. Give relevant examples. (6)
(ii) What is referential integrity? Give relevant example. (4)
(iii) Consider the following six relations for an Order-processing Database Application in a Company :
CUSTOMER (CUSTNO, CNAME, CITY)
ORDER (ORDERNO, ODATE, CUSTNO, ORD_AMT)
ORDER_ITEM (ORDERNO, ITEMNO, QTY)
ITEM (ITEMNO, ITEM_NAME, UNIT_PRICE)
SHIPMENT (ORDERNO, ITEMNO, WAREHOUSENO,
SHIP_DATE)
WAREHOUSE (WAREHOUSENO, CITY)
Here, ORD_AMT refers to total amount of an order; ODATE is the date the order was placed; SHIP_DATE is the date an order is shipped from the warehouse. Assume that an order can be shipped from several warehouses. Specify the foreign keys for
this schema, stating any assumptions you make. (6)

Or (b) With relevant examples discuss the various operations in Relational Algebra. (16)

13. (a) Define a functional dependency. List and discuss the six inference rules for functional dependencies. Give relevant examples. (16)
Or
(b) (i) Give a set of Functional dependencies for the relation schema R(A,B,C,D,E) with primary key AB under which R is in 2NF but not in 3NF. (5)
(ii) Prove that any relation schema with two attributes is in BCNF.(5)
(iii) Consider a relation R that has three attributes ABC. It is decomposed into relations R1 with attributes AB and R2 with attributes BC. State the definition of lossless-join decomposition with respect to this example. Answer this question concisely by
writing a relational algebra equation involving R, R1, and R2. (6)

14. (a) (i) Define a transaction. Then discuss the following with relevant examples : (8)
(1) A read only transaction
(2) A read write transaction
(3) An aborted transaction
(ii) With a neat sketch discuss the states a transaction can be in. (4)
(iii) Explain the distinction between the terms serial schedule and serializable schedule. Give relevant example. (4)

Or (b) (i) Discuss the ACID properties of a transaction. Give relevant example. (8)
(ii) Discuss two phase locking protocol. Give relevant example. (8)

15. (a) (i) When is it preferable to use a dense index rather than a sparse index? Explain your answer. (4)
(ii) Since indices speed query processing, why might they not be kept on several search keys? List as many reasons as possible.(6)
(iii) Explain the distinction between closed and open hashing. Discuss the relative merits of each technique in database applications. (6)

Or (b) Diagrammatically illustrate and discuss the steps involved in processing a query.(16)

## Automotive Electrical And Electronics 5th ND12 AT2302

B.E/B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2012
Fifth semester
Automobile engineering
AT 2302/AU52/1O122 AU 504 – AUTOMOTIVE ELECTRICAL AND ELECTRONICS
(Regulation 2008)

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For More Question paper of Auto - CLICK HERE

PART A-(10*2=20 marks)

1. What is reserve capacity of a battery?
2. Write the reaction takes place during discharging and charging of nickelmetal hydride cell.
3. What is the purpose of ballast resistor?
4. How do you control the generator output in automobiles?
5. List the factor affecting the establishment of arc across the spark plug air gap.
6. What are the factors that affect the life of a spark plug?
7. What is the function of a pulse generator?
8. Write the merits of distributorless ignition system.
9. What do you mean by aiming of head light?
10. Mention the significance of colour codes in an automobile.

PART B-(5*16=80 marks)

11. (a) Discuss various battery parameters in detail. Also give nominal battery parameters for any four types of any four types of automotive batteries.
Or
(b) Explain different battery charging types and state of charge methods.

12. (a) Describe the construction and working of overrunning clutch type starting drive. What is the function of solenoid switch in a pre-engaged starter motor
Or
(b) Explain in detail the procedure adopted to test the working of a generator regulator system. Discuss the common faults occur in generators.

13. (a) Explain the components of a magneto ignition system in detail. Mention the advantages of magneto ignition system over battery coil ignition system.
Or
(b) Explain the mechanism of centrifugal and vacuum advance methods. Justify the need for combined method.

14. (a) Explain the components of programmed ignition system with a lay out
Or
(b) How does a breaker -triggered system work? Explain the working of capacity discharge ignition system with its advantages.

15. (a) Explain the operation and principle of fuel level indicator ,oil lever indicator, and coolant temperature indicator.
Or
(b) Explain the construction and working of wiper motor. Also explain the how an electric horn works.

## Process And Quality Control In Spinning 5th ND12 TT2302

ANNA UNIVERSITY CHENNAI
BE/BTECH DEGREE EXAMINATION ,NOVEMBER/DECEMBER 2012
TEXTILE TECHNOLOGY
TT 2302/080340067/10155 TT505 PROCESS AND QUALITY CONTROL IN SPINNING
Fifth semester
(REGULATION 2008 )

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PART A (10*2 =20)

1 .Out line the role of quality and process control in spinning.
2. Write the quality norms for fiber properties to spin yarn of 60s Ne.
3. What is the effect of increasing cylinder speed on quality and waste extraction at cards?
4. What is fiber quality index? State its applications.
5. How will you assess the combing efficiency?
6. What is unilateral feeding? What is its significance?
7. What are the causes of periodic variation?
8. "CV% is better measure for of unevenness than U%?". why?
9. What is the effect of RH on ring spinning productivity?
10. What is snap study?

PART B - (5*16 = 80 marks)

11 (a) Explain the process quality control in spinning with key variables for each process .(16)
Or
(b) Discuss in detail application of statistical techniques in process and quality control with examples.(16)

12 (a) Explain the application of linear programming techniques in a mill to control mixing uniformity(16)
or
(b) Discuss the following i) nep removal in carding and combing machines (8)
ii) online monitoring and control of neps on modern cards.(8)

13 (a). How does the performance of bow room and carding assessed? Compare with norms and give remarks of collected waste and cleaning efficiency.(16)
or
(b) How will you optimize comber noils? What is the effect of important setting and their influence their influence on noil extraction?(16)

14 (a) Analyse the types of spectrogram with examples and discuss the source and remedy.(16)
or
(b) Discuss the following i) Assessment of within and between bobbin count variation (8)
ii) Classification of yarn imperfection and faults by Classimat.(8)

15 (a) Discuss in detail the various methods for maximizing the production in spinning machinery.(16)
or
(b) Discuss the following :
i) Ring frame process parameter on yarn quality (8).
ii) Causes and control of end breaks in spinning (8)

## Database management Systems 4th AM10 CS2255

B.E./B.Tech. DEGREE EXAMINATION, APRIL/MAY 2010.
Fourth Semester
Computer Science and Engineering
CS2255 - DATABASE MANAGEMENT SYSTEMS
(Common to Information Technology)
(Regulation 2008)

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PART A- (10 X 2= 20 marks)

1. Explain the basic structure of a relational database with an example.
2. What are the functions of a DBA?
3. Give the usage of the rename operation with an example.
4. What do you mean by weak entity set?
5. What is normalization?
6. Write a note on functional dependencies.
7. What do you mean by a transaction?
8. Define the term ACID properties.
9. Describe flash memory.
10. List out the physical storage media.

PART B- (5 X 16 = 80 Marks)

11. (a) (i) Discuss the various disadvantages in the file system and explain how it can be overcome by the database system. (6 Marks)
(ii) What are the different Data models present? Explain in detail. (10 Marks)
(Or)
(b) (i) Explain the Database system structure with a neat diagram. (10 Marks)
(ii) Construct an ER diagram for an employee payroll system. (6 Marks)

12. (a) (i) Explain the use trigger with your own example. (8 Marks)
(ii) Discuss the terms Distributed databases and client/ server databases. (8 Marks)
(Or)
(b) (i) What is a view? How can it be created? Explain with an example. (7 Marks)
(ii) Discuss in detail the operators SELECT, PROJECT, UNION with suitable examples. (9 Marks)

13. (a) Explain 1NF, 2NF and 3NF with an example. (16 Marks)
(Or)
(b) Explain the Boyce- Codd normal form with an example. Also state how it differs from that of 3NF. (16 Marks)

14. (a) (i) How can you implement atomicity in transactions? Explain. (8 Marks)
(ii) Describe the concept of serializability with suitable example. (8 Marks)
(Or)
(b) How concurrency is performed? Explain the protocol that is used to maintain the concurrency concept. (16 Marks)

15. (a) What is RAID? Explain it in detail. (16 Marks)
(Or)
(b) Mention the purpose of indexing. How this can be done by B+ tree? Explain.

## Electronics And Microprocessor 4th MJ12 ME2255

B.E/B.Tech. DEGREE EXAMINATION, MAY/JUNE 2012
Fourth Semester
Mechanical Engineering
ELECTRONICS AND MICROPROCESSOR
(Common to Automobile and Production Engineering)
(Regulation 2008)

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PART A- (10*2=20 marks)

1. Define Rectification.
2. Define Voltage Regulation.
3. What is the need for transistor biasing?
4. Draw the transfer characteristics of FET.
5. Wat are Flip Flops?
6. Draw the Half adder circuit.
7. List the various instruction types in 8085.
8. What are the various addressing modes in 8085?
9. What do you mean by interfacing?
10. List out some applications of the microprocessors.

PART B-(5*18=80 marks)

11. (a) (i) Draw and explain the circuit of a full wave rectifier. (8)
(ii) Discuss about intrinsic and extrinsic semiconductors. (8)
(or)
(b) (i) What do you mean by zener effect? Explain the characteristics of zener diode. (6)
(ii) Explain how zener diode is used as a voltage regulator. (10)

12. (a) (i) Draw and explain the circuit of a class B Pushpull power amplifier. (10)
(ii) What do you mean by negative feedback? List the characteristics and advantages of a negative feed back amplifier. (6)
(or)
(b) Draw and explain the characteristics of a FET amplifier and discuss the merits and demerits.

13. (a) (i) Design a Full adder. (10)
(ii) Discuss the operation of RS flip flop and D flip flop. (6)
(or)
(b) Draw and explain the operation of A/D and D/A converters. (16)

14. (a) Sketch the architecture of 8085 and explain the modules in detail. (16)
(or)
(b) With examples, explain the data transfer instructions and arithmetic instructions of 8085. (16)

15. (a) Draw and explain the block diagram and operation of temperature controlling system with a microprocessor. (16)
(or)
(b) Draw and explain the block diagram and operation of Traffic light controller with a microprocessor. (16)