Anna University - B.E. January 2012 1st Semester Exam Results

Anna University Chennai,Trichy,Combaitore,Madurai,Tirunelveli Exam Results Held on January 2012.


Anna University Chennai Results:

• Click Here to view the Result.

Anna University Chennai Semester 1 PG Result :

• Click Here to view the Result

Anna university of Trichy,Combaitore,Madurai,Tirunelveli are expected to announce the exam result of Semester 1 within the last week of Feb 2012.


To get the result updates once it announced, Follow us in Facebook or Subscribe to our Email Updates.


Follow us in facebook and visit us to know MORE UPDATES!

National Science Day 2012

Every year National Science Day is celebrated on 28thFebruary, to commemorate the day on which Sir C.V.Raman discovered the Raman effect.


In 1986, the National Council for Science and Technology Communication (NCSTC) asked the Government of India to designate February 28 as National Science Day.


The scientific institutions, science based agencies, universities , schools, colleges and state S&T Councils may celebrate this day in a befitting manner by organizing activities such as S&T Exhibitions, popular lectures, quiz and essay competitions and other appropriate activities involving participation of large number of people aimed at nurturing scientific temper in them.


Focal Theme :

The focal theme for the year 2009 was "Expanding Horizons of Science".


For the year 2012 the focal theme for National Science Day is “Clean Energy Options and
Nuclear Safety"

JNTUH - Postponement of All University Examinations scheduled on 28-02-2012.

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD - Andhra Pradesh (India)

---

Phone: Off : 91—40-23156113
Fax : 91—40-23158668

---

Dr. A. GOVARDHAN
B.E(CSE). M.Tech,Ph.D.
Professor in CSE &
DIRECTOR OF EVALUATION

---

Date : 27-02-2012

Notification to : All the Principals JNTUH affiliated Colleges.

---

Postponement of All University Examinations scheduled on 28-02-2012.

---

The Principals of the Affiliated Colleges are informed to note that all the University Examinations which are scheduled on 28-02-2012 are postponed. The Revised date of Examinations will be announced later. However, all the Examinations from 29-02-2012 will be conducted as per the schedule announced earlier.

The Principals are informed to communicate the same to the students immediately.

---

Thanking you

Yours sincerely.
DIRECTOR OF EVALUATION

---

Anna University - PG - ME Semester 1 Exam Result Jan 2012

Anna University - Chennai - Post Graduate - ME Semester 1 Exam Result Jan 2012 was announced.

Candidates can view their result from the below links:

Direct Link :

Click Here to view the Result.

Mirror Link :

Click Here to view the Result.

Mirror Link 2:

Click Here to View the Result.

Mirror Link 3:

Click Here to view the Result.

SMS:

Candidates can also get their result via SMS:

Type ANBEGS space HTNO send SMS to 5 67 67 999

BEST OF LUCK !!

Follow us in Facebook or Subscribe to our Email Updates !!

Anna University, Chennai - UG / PG Ist Semester January 2012 Results

Anna University - Chennai had announced the result for UG Ist Semester Examination held on Jan 2012. Candidates can view their result from anna university official website : annauniv.edu

Mirror Link :

Click Here to view the Result.

Mirror Link 2:

Click Here to View the Result.

Mirror Link 3:

Click Here to view the Result.

Anna University Semester 1 PG Result :

Click Here to view the Result

SMS:

Candidates can also get their result via SMS:

Type ANBEGS space HTNO send SMS to 5 67 67 999

BEST OF LUCK !!

JIWAJI UNIVERSITY–GWALIOR - Revised Time Table for MBA (Full Time) III Semester Examination December 2011

JIWAJI UNIVERSITY, GWALIOR

REVISED – NOTIFICATION

The Revised Examination Programme of MBA (Full Time) III Semester Examination December 2011

Time : 01.30 P.M. to 4.30 P.M.

MBA (Full Time) Third Semester

Date	Day	Paper Code	Name of the Paper
01-03-12	Thursday	MBA-301	Management Science
05-03-12	Monday	MBA-302	Total Quality Management
10-03-12	Saturday	MBA-MM-303	Consumer Behaviour
15-03-12	Thursday	MBA-FM-303	Security Analysis and Portfolio Management
19-03-12	Monday	MBA-HRM-303	Management of Industrial Relations
22-03-12	Thursday	MBA-MM-304	Adverstising Management
26-03-12	Monday	MBA-FM-304	Indian Financial System
29-03-12	Thursday	MBA-HRM-304	Legal Framework Governing Human Relations
02-04-12	Monday	MBA-MM-305	International Marketing
07-04-12	Saturday	MBA-FM-305	International Financial Management
10-04-12	Tuesday	MBA-HRM-305	Human Resource and Organisational Development

Note - No guarantee is given about the order of question papers

Nagarjuna University - CHANGED BCOM, (RES),(VOC) COURSE TIME TABLE

Changed B.Com (RES) course Time Table

SUBJECT	SUBJECT NAME	OLD DATE	OLD DAY	CORRECTED DATE	CORRECTED DAY
CAR 1	Computer Fundamentals	12-03-2012	MONDAY	10-03-2012	SUTURDAY
CAR 2	Computer Based Documentation	27-03-2012	TUESDAY	28-03-2012	WEDNESDAY
BCO24	Quantitative Tech. _ II	28-03-2012	WEDNESDAY	30-03-2012	FRIDAY
CAR 3		12-03-2012	MONDAY	13-03-2012	TUESDAY
CAR4		13-03-2012	TUESDAY	14-03-2012	WEDNESDAY

Changed B.Com course Time Table

SUBJECT	SUBJECT NAME	OLD DATE	OLD DAY	CORRECTED DATE	CORRECTED DAY
BCO24	Quantitative Tech. _II	28-03-2012	WEDNESDAY	30-03-2012	FRIDAY

Changed B.Com (VOC) course Time Table

SUBJECT	SUBJECT NAME	OLD DATE	OLD DAY	CORRECTED DATE	CORRECTED DAY
BCO24	Quantitative Tech. _II	28-03-2012	WEDNESDAY	30-03-2012	FRIDAY
ECO2V	Development economics and issues in Indian economy	30--03-2012	FRIDAY	29-03-2012	THURSDAY

Anna University of Technology Tiruchi - UG Revaluation Notification From Controller of Examinations

ANNA UNIVERSITY OF TECHNOLOGY TIRUCHIRAPPALLI

Anna University of Technology Tiruchirappalli UG Revaluation Notification From Controller of Examinations.

This is to inform that the Revaluation for Nov/Dec’2011 Examinations for UG (Regulation 2007 and 2008) to be scheduled on 25.02.2012. In this regard, you are requested to depute staff members from each department with experience as listed below.

S.No	Board	Experience
1	Civil	2 Years
2	ECE/CSE/Mathematics/ Chemistry	4 Years
3	EEE/ Mechanical	6 Years

Your cooperation is expected for the smooth conduct of the revaluation.

Dr.M.MADAN KUMAR

Controller of Examinations (i/c)

Software Quality Assurance Question Bank–2012 Edition

Anna University

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

Software Quality Assurance QUESTION BANK

SUBJECT CODE: CS2055

YEAR: IV

SUBJECT NAME: Software Quality Assurance

SEM : VII

---

UNIT-1 Introduction to Software Quality

---

PART-A

1) Define software quality.

2) Write down the different views of quality.

3) Describe the three areas addressed by McCall model.

4) Define McCall’s quality criteria

5) How the quality criteria interrelated

6) Give the conditions that quality metrics should meet.

7) What are the two types of metrics?

8) Give the characteristics of quality of software?

9) Why software is considered to be problematical?

10) What are the seven criteria suggested by watts for a good metric?

11) How the metrics are classified?

12) Write down the limitations of metrics?

13) What are the problem areas associated with implementation of the method?

14) Write down the Gilb’s quality attributes

15) Gilb’s approach becomes obsolete State reason.

PART - B

1. What are the views of quality? Explain in Detail the views of quality. (15)

2. Explain the hierarchical model of Quality. (15)

3. a) Plain in detail the GE Model. (07)

b) Plain the Boehm model. (08)

4. Explain how the software quality can be measured and the problems associated with them.	(15)
5. Explain the work of Gilb.	(15)
6. Explain in detail GQM model.	(15)

---

Unit-II: SOFTWARE QUALITY ASSURANCE

---

PART-A

1) What are five factors affecting software quality assurance?

2) Write down the guidelines for effective leadership?

3) Write down the five effective methods to ensure the failure of software quality assurance?

4) What is SRS?

5) What is SDD?

6) What is Software Interfaces documentation?

7) Write down the principles behind the review process?

8) Write down the specification for reviews?

9) What are the inputs given to the management review process?

10) Write down the objective of Technical review ?

11)Write down the procedures involved in auditing?

12)Write down the preparations that has to be made by the audit team?

13)What are the requirements required for the document audit and verification?

14)When the auditing is said to be complete?

15)What is the purpose of performing Review and auditing?

Part-B

1.Explain in detail the Quality tasks and responsibilities.	(15)
2. Explain in detail about the Documentation.	(15)
3. Explain the Procedural description template and Action items	(15)
4. Explain in detail the CMM Compatibility of Reviews and audits.	(15)
5. Explain the types of reviews.	(15)
6. a) Explain the software inspection process	(08)
b) Explain the factors affecting the SQA effort.	(07)

---

Unit- III QUALITY CONTROL AND RELIABILITY

---

PART-A

1) What are different types of Reliability growth models?

2) What are assumptions made in J-M model?

3) What are the assumptions made in fault count model?

4) Write down the criteria involved in reliability models

5) Write down the procedures involved in modeling software reliability

6) Define test compression factor

7) Write down the advantages of using reliability growth model

8) What are Ishikawa’s seven basic tools for quality control?

9) Write down the assumptions made in the phases of defect removal activities

10) How will u calculate the total defects for the life of the software?

11) Write down the equation for Goel generalized non homogenous Poisson process model.

12) What are the two types of inspector phase defined by knight and Myers?

PART-B

1 a) Explain in detail about the Reliability growth models. (08)

b) Explain the Defect Prevention Process. (07)

2. Explain the Defect removal Effectiveness.	(15)
3. Explain the Reliability models.	(15)
4. Explain in detail about the Rayleigh model.	(15)
5. Explain Reliability growth model for quality assessment	(15)

---

Unit - IV QUALITY MANAGEMENT SYSTEMS

---

PART - A

1) How will u calculate the total defects for the life of the software?

2) What is single inspector phase?

3) Name the two metrics for DRE

4) What is the use of software reliability models

5) What is the need of assessing the software reliability?

6) Write down the classification of reliability models

7) What are the assumptions made in the rayleigh model curve to model the software development activity?

8) What is DUD?

9) What are the strengths of Rayleigh model?

10) How the Reliability growth models are classified?

11) What are different types of Reliability growth models?

12) What are the assumptions made in fault count model?

13) Write down the criterias involved in reliability models?

14) Write down the procedures involved in modeling software reliability?

15)What are the four types of scenarios?

PART-B

1. Explain in detail the elements of QMS.	(15)
2. Explain the Rayleigh model framework.	(15)
3. Explain the Reliability Growth models.	(15)
4. Explain the complexity metrics and its models	(15)
5. Explain Lines of Code and Halstead’s Software Science.	(15)

---

Unit – V QUALITY STANDARDS

PART-A

---

1) Define CASE tool?

2) What are advantages of CASE Tools?

3) What are different types of CASE tools.

4) Define QMS?

5) Write down the SPC techniques?

6) List out the ISO 9000 series of quality management standards.

7) What is six sigma?

8) What is CMMI?

9) What is ISO 9000 certification?

10) Define CMM?

11) What is SEI?

PART-B

1. Discuss in detail about the needs for standards (15)

2. Explain the ISO9000 series standard (15)

3. Explain the ISO9000-3 standard for software development. (15)

4 .Explain in detail the CMM Model (15)

5. Explain the CMMI Model (15)

6. Explain the Six Sigma Concepts. (15)

---

Anna university of Technology Chennai - Recommendations of the "Round Table" on Educational Development

Government of India

Ministry of Human Resource Development

Department of Higher Education - 

20.10.2011 

New Delhi.

Follow up action on the recommendations of the ‘Round Table’ on Educational Development of Disadvantageous Sections held on 20.10.2011 under the Chairmanship of Hon’ble HRM.

The 2nd Meeting of the ‘Round Table’ Of Educational Development of Disadvantageous Sections was held on 20.11.2011. Among the various issues discussed, it was decided to make educational institutions (the buildings of University, colleges and technical institutes, approached, toilets, playgrounds, laboratories, libraries, etc) barrier free and accessible for ail types of disability and to remove myths about MentaHy Illness among the peers and staff.

-----
( Harpreet Singh)
Director
Tel: 2338 7934

Anna University of Technology - Tirunelveli - REVALUATION RESULTS-NOV/DEC 2011 EXAMINATIONS

Anna University of Technology - Tirunelveli had announced the REVALUATION RESULTS for M.E./M.TECH/MCA/MBA/M.Sc(5Yrs) and B.E./B.TECH DEGREE Exam Held on NOV/DEC 2011. Candidates can view the result from the official anna tech Tirunelveli website : http://www.auttvl.ac.in

or view from the direct link given below :

M.E./M.TECH/MCA/MBA/M.Sc(5Yrs) DEGREE RESULTS (REGULATION 2007)	Click Here
M.E./M.TECH/MCA/MBA/M.Sc(5Yrs) DEGREE RESULTS (REGULATION 2009)	Click Here
B.E./B.TECH DEGREE RESULTS (REGULATION 2007)	Click Here
B.E./B.TECH DEGREE RESULTS (REGULATION 2008)	Click Here

Anna University - REVALUATION Result for B.E. Nov/Dec 2011 3rd,5th,7th Semester

Anna University and Anna University of Technology -  Chennai , Trichy , Combaitore , Madurai , Tirunelveli REVALUATION Results Held on November/December 2011.

Anna University of Technology Tiruchi :    Click Here to View the Result


Anna University of Technology Chennai :  Click Here to see the Results

Anna University of Technology Combaitore : Click Here to view the Result


Anna University Chennai - Affiliated Colleges : Click Here to view the Results

Anna University of Technology - Tirunelveli Revaluation Result : Click Here to View the Result


For Anna University of  Madurai , REVALUATION result for Nov / Dec 2011 was expected to announced within March. To get the result once announced follow in Facebook or Subscribe to our Email Updates.

Power Plant Engineering (PPE)–Question Bank 2012 Edition

Anna University

EE-2252 POWER PLANT ENGINEERING

QUESTION BANK

---

UNIT-1

THERMAL POWER PLANTS

---

PART-A

1. What is meant by air standard cycle?

2. Explain the Carnot heat engine with diagram?

3. Explain the stages in Brayton cycle?

4. Draw the P-V and T-S diagram for Carnot refrigerator?

5. Explain the Rankine cycle and its stages?

6. What is called air standard efficiency?

7. Define reheat system and regeneration system?

8. What is called superheated steam?

9. What is the function boiler and turbine?

10. What are the types of boilers?

PART-B

11. a) Explain the steam power plant layout and its working principle?

b) Explain the reheat system and regeneration system of a thermal power plant

12. a) Explain the principle of carnot heat engine .

b) Derive the thermal efficiency for the brayton cycle and explain all its stages?

13. A steam turbine is to operate on a simple regenerative cycle. Steam is supplied to dry saturated at 35 bar & a exhausted to a condenser at 0.06 bar. The condenser is pumped to a pressure of 3 bar at which it is mixed with bled steam from the turbine at 3 bar. The resulting water, which is at saturation temperature, is then pumped to the boiler for ideal cycle.

Calculate: (i) The amount of bled steam required per Kg of Kg of supply steam.

(ii) The thermal efficiency of the plant

14. Explain the water tube boiler and fire tube boiler with neat sketch

15. Draw a line diagram of fluidized bed combustion system where steam turbine is used as a prime mover & explain it's working.

---

UNIT-2

HYDRO ELECTRIC POWER PLANT

---

PART-A

1.what do you under stand by water hammer?

2.Discuss the essential factor which should be considered while selecting a site for a hydro electric power plant

3.what is the basis of classification of turbines?

4.What is draft tube & explain it's function?

5.What is the function of surge tank in a hydro electric power plant?

6.Classify different types of turbine.

7.What are the three main factors of power output of hydroelectric plant?

8.How do you classify the hydro-power plants?

9.What are the main parts of pelton wheel?

10.What is the function of spear & nozzle?

PART-B

11.Draw a lay out of typical micro hydro scheme & explain it's working in detail.

12.What are the different types of pumped storage power generation? Explain it's advantages & dis-advantages.

13.Derive the expression for the maximum hydraulic efficiency in a impulse turbine.

14.What are the factors to be considered for selecting a site for a hydroelectric power plant?

15.Sketch the lay out of hydro electric power plant &explain the functions of each component in it. Discuss the advantages & limitations of this power plant.

---

UNIT-3

NUCLEAR POWER PLANT

---

PART-A

1.what are the conditions satisfied to sustain nuclear fission process?

2.What is nuclear fusion?

3.Explain the functions of moderators.

4.Mention the various types of fast breeders.

5.List down the nuclear waste disposal methods.

6.What are the desired properties required for good moderator?

7.What are the function of control rods?

8.State the advantages of fast breeder reactors.

9.What factors control the selection of a particular type of a reactor?

10.Define the term “Breeding”.

PART-B

11.Explain the working of a typical fast breeder nuclear reactor power plant, with the help of a neat diagram.

12.With a neat sketch explain the boiling water reactor power plant.

13.Describe the boiling water reactor with the help of a neat sketch & explain it's chief characteristics.

14.Explain the construction & working of super critical water reactor.

15.Explain the principle of operation of fusion reactor.

---

UNIT-4

GAS & DIESEL POWER PLANTS

---

PART-A

1.what are the main units in a gas turbine power plant?

2.State any two major advantages of gas turbine power plant.

3.What are the essential components of a diesel power plant?

4.What are all the application of diesel power plant ?

5.Discuss the effect of inter cooling in a gas turbine plant?

6.Sketch the schematic arrangement of open cycle gas turbine plant & name the components.

7.What are the effect of introducing regeneration in the basic gas turbine cycle?

8.What are the performance parameters in I.C engines?

9.What are the commonly used fuel injection system in a diesel power station?

10.What is the principle of operation of a simple jet propulsion system?

PART-B

11.In a gas turbine unit air is drawn at 1.02bar & 18ºc & is compressed to 6.2 bar. Calculate the thermal efficiency & the work ratio of the ideal constant pressure cycle, when the maximum cycle temperature is limited to 900ºc

12.List the essential components of a diesel power plant and explain them briefly.

13.Draw a neat diagram of a regenerative gas turbine power plant having intercooling & reheater, also explain it's working with the help of a p-v diagram.

14.An ideal bray ton cycle operating with a pressure ratio of 8.25 & the initial pressure & temperature of 1 bar & 32ºc respectively. The turbine & compressor efficiencies are 80% & 85% respectively. Find the compressor and turbine work per Kg of air, heat supplied & the cycle efficiency.

15.With p-v & t-s diagram explain the effect of intercooling, reheating & regeneration in a gas turbine plant.

---

UNIT-5

NON-CONVENTIONAL POWER GENERATION

---

PART-A

1.What are the components of tidal power plants?

2.What is the principle of OTEC?

3.List out four important factors to be considered for selection of site for power plants.

4.What are the limitations of OTEC system?

5.What is the classification of tidal power plants?

6.What is geothermal energy?

7.What are the different geothermal fluids?

8.What is meant by reversible fuel cell?

9.What are the basic arrangements proposed for converting solar radiation into electrical energy?

10.What are the characteristics of solar central receiver system?

PART-B

11.Draw the layout of a MHD open cycle generator & explain it's functions of components.

12.Explain the working principle of geothermal conversion system with neat sketch.

13.Discuss the principle of operation of fuel cell with a neat sketch.

14.Explain the working principle of OTEC with it's advantages & dis-advantages.

15.Describe the working of polymer electrolyte fuel cell with a neat sketch.

---

Power Plant Engineering (PPE)–Unit 5 Two Marks Question Bank

Anna University

Power Plant Engineering

Semester 4 – Electrical and Electronics Engineering

---

Unit 5

Nuclear and MHD Power Generation

---

Two Marks Question Bank

1. What is geothermal energy? Give its applications.

2. Give some geothermal energy sources in India.

3. What are the different geothermal fluids and give its temperature range.

4. State the applications of solar thermal system.

5. What are the factors to be considered for suitable site selection of tidal power plant?

6. Mention the advantages and disadvantages of geothermal power plant.

7. What are the fixed costs?

8. List out the advantages of tidal power plant over hydel power plant.

9. What is the significance of two part tariff and three part tariff?

10. Mention the advantages & disadvantages of the OTEC power plant.

11. What are the major factors that decide the economy of the power plant?

12. What are the advantages and limitations of tidal power generation?

13. What do you understand by the term tariff?

14. What are the components of tidal power plants?

15. What is OTEC?

16. How does the fuel cost relate to the load and the cost of power generation?

17. What are the important criteria while selecting the geothermal energy?

18. What is the principle of OTEC?

19. What is the basic principle of tidal power?

20. How can the generation of power be achieved in a single basin arrangement?

21. What is a fuel cell? Give its types.

22. What is meant by reversible fuel cell?

23. What are the basic arrangements proposed for converting solar energy into electrical energy?

24. What are the characteristics of solar central receiver system?

25. What is heliostat? Give its basic aspects.

26. List out four important factors to be considered for selection of site for power plant.

27. What is MHD? Give its principle of power generation.

28. Give the advantages and disadvantages of wind power.

29. Give the characteristics of Wind energy.

30. What are the parts of a fuel cell?

Control System–Unit 1–Important 16 Marks Questions

Anna University

---

DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING

QUESTION BANK

SUBJECT CODE & NAME : CONTROL SYSTEMS ENGINEERING

YEAR / SEM : II / IV

---

UNIT I

SYSTEMS AND THEIR REPRESENTATION

---

1. .Write the diferential equations governing the Mechanical system shown in fig 1.1.and determine the transfer function.

5. Obtain the closed loop transfer function C(S)/R(S) of the system whose block is shown in fig.

10. (i) Derive the transfer function for Armature controlled DC motor. (8)

(ii)Derive the transfer function for Field controlled DC motor. (8)

11. (i)Explain DC servo motor. (6)

(ii)Explain the working of AC servomotor in control systems. (10)

12. (i)Explain Synchros and its types. (10)

(ii)Write the rules for block diagram reduction techniques.

Numerical Methods (NM) - Formula Collection

Contents :

• Formula for Regula Falsi Method
• Formula for Newton Raphson Method
• Lagrange's Interpolation Formula
• Inverse Lagrange's Interpolation Formula
• Newton's Divided Difference interpolation Formula
• Newton's Forward and Backward difference formula.
• Trapezoidal Rule
• Simpson's 1/3 Rule
• Simpson's 3/8 Rule
• Newton-Cotes quadrature formula
• Two and Three point Gaussian Quadrature.
• Taylor's Series
• Euler Algorithm
• Modified Euler Algorithm
• Third Order and Fourth order R.K Method Algorithm
• Milne's predictor formula
• Milne's corrector formula
• Adamas - Bashforth corrector and predictor formula
• Partial Differential second order equation
• Crank - Nicolson formula
• Digonal five point (DFPF)
• Standard five point formula (SFPF)
• Laplace Equation
• Liebmann's iteration process formula

Download :

NM-Formula (3mb)

Numerical Methods–Question Bank (All Units)

Anna University

Subject Name : Numerical Methods

Subject Code : MA2264

Semester / Branch : II / EEE

Contents :

1. Solution of Equations and Eigen Value Problems
2. Interpolation and Approximation
3. Numerical Differentiation and Integration
4. Initial Value Problems for Ordinary Differential Equations
5. Boundary Value Problems in Ordinary and Partial Differential Equations

Download :

NM-QB.pdf (10 mb)

Anna University Chennai - Notification for inviting panel of Question Paper setters (UG & PG)

ANNA UNIVERSITY :: CHENNAI- 600 025
OFFICE OF THE CONTROLLER OF EXAMINATIONS

Panel Of Question Paper Setters (2012)

The Controller of Examination office is updating the database of experts for setting of Question Paper. The blank format available in this site may be downloaded and the filled in application may be sent to the Controller of Examinations, Anna University Chennai –600 025. duly forwarded through the head of the Institution.

Faculty working in the Anna University affiliated colleges need not respond to this request please.

Faculty with experience of not less than 5 years alone are requested to send the application.

Download :

Click Here to Download the Form.

Linear Integrated Circuits (LIC) - Unit 2 and 3 Some Important Two Marks

Anna University

Linear Integrated Circuits (LIC)

Unit 2 and 3 Some Important Two Marks

1. Slew rate:

The slew rate is defined as the maximum rate of change of output voltage caused by a step input
voltage. It is given by incapacitor.

CMRR:

The ratio of differential gain and the common mode gain is termed as Common Mode Rejection Ratio.

CMRR = Ad/Ac



2. Circuit diagram of differentiator using op-amp.

---

3. Why op-amp configurations are not used in linear applications?

                        An op-amp in open loop configuration will not be used for linear applications because the output of OP-AMP in open loop mode will be ± V sat.

---

4. For an inverting summer find Vo in terms of two input Vi & V2.

---

5. What is the need for compensating network in op-amp?

In order to attain

> Larger bandwidth

> Lower closed loop gain

> Single break frequency

> Central the phase shift and stability

---

6. How many resistors are required in a 10-bit weighted resister D/A convertor?

 10(ten) resistors are required in a 10-bit weighted resistor D/A convertor.

---

7. What is the advantage of active op-amp based clipper over passive clipper?

                  The advantage of active op-amp based clipper over passive clipper is as follows,

> Flexible design

> Accuracy

> Less noise components

> Isolation between input circuits and load circuits.

---

8. List any four important applications of a comparator.

> Zero crossing detector

. > Window detector

> Time marker generator

> Phase meter

---

9. State the two advantages of active filters over passive filters.
> Flexible design

> Accuracy

> Less noise components

> Isolation between input circuits and load circuits.

---

10. What are the basic requirements of a good instrumentation amplifier?

> High gain

> Accuracy

> High CMRR

> Low DC offset

> Low input impedance

---

11 The two input bias current of an op-amp are 22pA & 26mA What is the value of input offset current and input bias current?

---

12 Sketch the circuit of an op amp employed as, non inverting zero crossing detector, along with input and output waveform.

---

13 An op amp data sheet gives 15V power bandwidth of 25KHZ What is the slew rate?

---

14. Compare ideal and practical characteristics of an operational amplifier.

An ideal op amp draws no current from the source and its response is also independent of temperature. However a reach op amp does not work this way Current is taken from the source into the op amp inputs Also the two input respond differently to current and voltage due to mismatch in transistor.

---

15 Draw the circuit diagram of op-amp integrator Mention its applications.





Applications

> The gain of an integrator at low frequency can be limited to avoid the saturation problem.

---

16. Draw the circuit of current to voltage convertor using op-amp and bring out the relation. State the application.







Application:

> The photocell, photodiode and photovoltaic cell gives an output current that ¡s proportional to an incident radiant energy or light.

> The current through these devices can be converted into voltage by using an I to V converter and thereby the amount of light or radiant energy incident on the photo device can be measured.

---

17. Which is fastest ADC and why?

Successive approximation type.

i. It is faster(tracking circuit) .

ii. The successive approximation type uses very efficient code search strategy to complete n-bit conversion in just n-clock periods.

---

18. How many resistors are required in a 10-bit weighted resister D/A convertor?

10(ten) resistors are required in a 10-bit weighted resistor D/A convertor.

---

19. A 8 bit DAC has resolution of 2OmV/bit. what is the analog output voltage for the digital input code 00010110 (the MSB is the left most bit)?

---

20. What is zero crossing detector?

It is provided that Vref is set to zero. It detects how many time cross the zero value of electrical quantity.

---