BVM Youth For Society

Dear Students
As we know  that  our society contribute lots for our development so its time to give something back
and secondly , not create only one sided personality .
let us do something for our society  Directly or Indirectly and  give some thing back to our society .
For that we are planning  to do some nobal works in terms of development of our selves as well as our nations .
So we give our inputs in terms of :
1:Free Knowledge Sharing to our Juniors
2:Free Classes for Poor people and average students
3:Take responsibility for Some innovative Idea .

so we invite you to join this youth club. and send your ideas

Assignment for T.Y.B.E -Students

Assignment -1  -

 Finished ---------------------------------------------------------------------------        10 Marks

Assignment- 2

Select suitable topic for Presentation and Make Powerpoint Presentation  Before 15/4/2012 .confirm your topic with Faculty in Next Seven days .-----------------------        10 Marks

Assignment-3

Write atleast 2  GTU External Examinationpaper and submit before 28/4/2012 ------    15  Marks

Assignment -4

Prepare Experiments as per given format in the group of 7-8 Students .

Format of Lab Project Report for Students  , submitted before –21/4/2012 -------          15 Marks .

For Display Ckt Board in lab  :Use Red ,Yellow and Blue ,and  line thickness is 2 point with

For AIM  Use 18- Times New Roman RED Font only for uniformity .

All Ckt are colour  Printed in A3 size (containing AIM ,Circuit diagram with Suitable range or appartus used ,Observation table and Actual Images of Instruments used in industries  if possible  laminated with simple cardboard )

remaining things are submited in report.

- Indicate the revised lab experiment title and number.

NAME – Give your Group name with En.No, Name,Contact No,Email I.D ,.

LAB PARTNER(S) - Specify your lab partner's name.

DATE - Indicate the date of start and End date .

OBJECTIVE - Clearly state the objective of upgrading our existing Practical with Latest industrial  On going practice.

EQUIPMENT USED - Indicate which equipment was used in performing the experiment. The Manufacturer and model number should be specified.

PROCEDURE –

Provide a concise summary of the procedure used in the lab. Include any modifications

to the experiment.

DATA - Provide a record of the data obtained during the experiment. Data should be retrieved from the lab notebook and presented in a clear manner using tables.

OBSERVATIONS AND DISCUSSIONS - The student should state what conclusions can be

drawn from the experiment. Plots, charts, other graphical medium, and equations should be employed to illustrate the student's viewpoint. Sources of error and percent error should be noted here.

QUESTIONS - Questions pertaining to the lab may be answered here. These questions may be answered after the lab is over.

CONCLUSIONS - The student should present conclusions, which may be logically deduced, From his/her data and observations.

SIGNATURE - Include the statement "This report is accurate to the best of my knowledge  

                     And is a true representation of my laboratory results."

SIGNED _______________________________________

B.V.M Engineering College –

Dept.of Electrical Engineering

ELECTRICAL MEASUREMENT-II .T.Y.B.E.

 ASSIGNMENT: I            

  ASSIGNMENT Date: 07^TH feb-2011                                        LAST DATE OF SUBMISSION: 14^TH Feb-2012.

 Each assignment are equal in weightage and  compulasary ,those who are failed to submit before dead line will Get Zero Marks in Internal . 

Q1)  Explain  the  term  ‘statistical  analysis’,’  Arithmetic  mean’,’  Average  deviation’, ‘Standard  deviation ‘  and variance with suitable example.   

Q2)  Explain in detail ‘classification of standards’, what are the standard s for mass, length, time, volume and frequency?  

Q3)  Explain in detail ‘classification of error ‘with suitable examples and remedies for them.  

Q4) Explain the Accuracy and precision in detail and how they differ from each other? 

 Q5) what is the limiting error?

 Prove that Aa=A (1±e) where Aa =the actual value of quantity As=Normal or specified

value of the quantity and ex=relative limiting errors. 

Q6)  Systematic errors are classified as Instrumental error, environmental error and

Observational error.  Explain briefly, what are the causes of these errors .suggest

Corrective measures to reduce these errors. 

Q7) what is histogram .explain use of Gaussian curve. 

Q8)  State  the  difference  between  fundamental  and  derived  quantity  with  the  help  examples. 

Q9) The resistive load the following rating r1=40±5%,r2=50±5%,r3=80±5% i) determine the magnitude  and limiting error  in ohm in percent of the resistance  of these resistances connected parallel. 

Q10) Set of independent measurement of voltages are recorded as 101.2, 101.4.101.7,101.3, 101.3, 101.2, 101.0, 101.3, 101.5, and 101.1.

 Calculate

 i) arithmetic mean          ii) Deviation from the mean 

iii) Standard deviation     iv) Probable error.

Make Power point slide on Different types of Errors.

Tutorial -solved the Examples Given in Lab session.

Online submission is also valid .submit it on: gksharma@bvmengineering.ac.in with Your Enrollment no.

Assisgnment Electrical Measurement and Instrumentation -for 3rd and 4th level students

 MEASUREMENTS AND INSTRUMENTATION

QUESTION BANK

Subject Name : Measurements and Instrumentation.

UNIT – I

FUNCTIONAL ELEMENTS OF AN INSTRUMENT

PART – A

1. What are the functional elements of an instrument? (2)

2. What is meant by accuracy of an instrument? (2)

3. Define international standard for ohm? (2)

4. What is primary sensing element? (2)

5. What is calibration? (2)

6. Define the terms precision & sensitivity. (2)

7. What are primary standards? Where are they used? (2)

8. When are static characteristics important? (2)

9. What is standard? What are the different types of standards? (2)

10. Define static error. Distinguish reproducibility and repeatability. (2)

11. Distinguish between direct and indirect methods of measurements. (2)

12. With one example explain “Instrumental Errors”. (2)

13. Name some static and dynamic characteristics. (2)

14. State the difference between accuracy and precision of a measurement. (2)

15. What are primary and secondary measurements? (2)

16. What are the functions of instruments and measurement systems? (2)

17. What is an error? How it is classified? (2)

18. Classify the standards of measurement? (2)

19. Define standard deviation and average deviation. (2)

20. What are the sources of error? (2)

21. Define resolution. (2)

22. What is threshold? (2)

23. Define zero drift. (2)

24. Write short notes on systematic errors. (2)

25. What are random errors? (2)

PART – B

1. Describe the functional elements of an instrument with its block diagram.

    And illustrate them with pressure gauge, pressure thermometer and

    D’Arsonval galvanometer. (16)

2. (i) What are the three categories of systematic errors in the instrument and

    explain in detail. (8)

    (ii) Explain the Normal or Gaussian curve of errors in the study of random

    effects. (8)

3. (i) What are the basic blocks of a generalized instrumentation system.

    Draw the various blocks and explain their functions. (10)

   (ii) Explain in detail calibration technique and draw the calibration curve in general. (6)

4. (i) Discuss in detail various types of errors associated in measurement

    and how these errors can be minimized? (10)

    (ii) Define the following terms in the context of normal frequency

     distribution of data (6)

a) Mean value, b) Deviation, c) Average deviation, d) Variance

e) Standard deviation.

5. (i) Define and explain the following static characteristics of an instrument. (8)

a) Accuracy, b) Resolution, c) Sensitivity and d) Linearity

    (ii) Define and explain the types of static errors possible in an instrument. (8)

6. Discuss in detail the various static and dynamic characteristics of a measuring

    system. (16)

7. (i) For the given data, calculate

a) Arithmetic mean, b) Deviation of each value,

c) Algebraic sum of the deviations (6)

X1 = 49.7, X2 = 50.1, X3 = 50.2, X4 = 49.6, X5 = 49.7

    (ii) Explain in detail the types of static error. (7)

    (iii) Give a note on dynamic characteristics. (3)

8. (i) What is standard? Explain the different types of standards? (8)

    (ii) What are the different standard inputs for studying the dynamic response of a

    system. Define and sketch them. (8)

UNIT – II

ELECTRICAL AND ELECTRONICS INSTRUMENTS

PART – A

1. State the principle of digital voltmeter. (2)

2. Give the importance of iron loss measurement. (2)

3. List two instruments for measurement of frequency. (2)

4. Write the function of instrument transformer. (2)

5. Brief the principle of digital phase meter. (2)

6. Write any two advantages and disadvantages of digital voltmeter. (2)

7. Explain the purpose of Schmitt trigger in digital frequency meter. (2)

8. Which torque is absent in energy meter? Why? (2)

9. What are the errors that take place in moving iron instrument? (2)

10. Explain the principle of analog type electrical instruments. (2)

11. How a PMMC meter can be used as voltmeter and ammeter? (2)

12. What is loading effect? (2)

13. State the basic principle of moving iron instrument. (2)

14. Why an ammeter should have a low resistance? (2)

15. Define the sensitivity of a moving coil meter. (2)

16. What are the precautions taken while using a DC voltmeter and DC Ammeter? (2)

17. What is the use of Multimeter? Write its advantages and disadvantages. (2)

18. Voltmeter has high resistance, why it is connected in series? (2)

19. What is an energy meter? Mention some advantages and disadvantages of energy meter. (2)

20. What is meant by creep adjustment in three phase energy meter? (2)

21. List some advantages and disadvantages of electrodynamic instrument. (2)

22. List the advantages of electronic voltmeter. (2)

23. What is a magnetic measurements and what are the tests performed for

      magnetic measurements? (2)

24. Mention the advantages and disadvantages of flux meter. (2)

25. What are the methods used to determine B-H Curve? (2)

26. What are the errors in instrument transformers? (2)

27. What is frequency meter and classify it? (2)

28. What is phase meter and what are its type? (2)

29. Differentiate ammeter an voltmeter. (2)

30. Define leakage factor. (2)

PART – B

1. (i) Describe the construction and working of a permanent magnetic moving

    coil instruments. (10)

    (ii) Explain the design of three phase wattmeters and give the reactive power

    measurement in 3 phase circuits. (6)

2. (i) How B-H curve is determined for a ring specimen. (8)

    (ii) Explain the frequency measurement in Wien’s bridge (8)

3. Discuss why it is necessary to carry out frequency domain analysis of measurement

    systems? What are the two plots obtained when the frequency response of a system is     

    carried out? (16)

4. Explain the function of three phase wattmeter and energy meter. (16)

5. (i) Sketch the circuit and waveforms for ac voltmeter using a PMMC

    instrument and half wave rectifier. Explain the circuit operation. (10)

    (ii) Develop the torque equation for a PMMC instrument and show its scale is linear(6)

6. (i) Discuss in detail the working of the successive approximation DVM.(8)

    (ii) With a neat diagram, explain the various methods of magnetic measurements. (8)

7. (i) Explain with a neat sketch the construction and working principle of single-phase       

    induction type energy meter. (10)

    (ii) How the range of d.c ammeter and d.c voltmeter can be extended?

    Derive the expressions to calculate shunt resistance and multiplier resistance. (6)

8. (i) With a neat diagram explain the construction and working of

    electrodynamometer type instruments. Also derive its torque equation.(10)

    (ii) Explain with neat diagram the working of Linear ramp type DVM. (6)

9. (i) Explain the different methods of determination of B –H curve (8)

    (ii) With block diagram explain the working principle of digital frequency meter. (8)

10. (i) Explain the working principle of moving iron instrument. (8)

      (ii) Give a detailed notes on Instrument transformers. (8)

UNIT – III

COMPARISON METHODS OF MEASUREMENTS

PART – A

1. Draw Maxwell’s AC bridge and give the balance equation interms of resistance. (2)

2. Explain any two technical parameters to be consider in grounding. (2)

3. Give some applications of Wheatstone’s bridge. (2)

4. What is a potentiometer? (2)

5. List the applications of dc and ac potentiometer. (2)

6. Differentiate the principle of dc potentiometer and ac potentiometer. (2)

7. What is meant by transformer ratio bridge (2)

8. What are the features of ratio transformer? List its applications. (2)

9. What is meant by electromagnetic interference? (2)

10. List the sources of electromagnetic interference. (2)

11. What are the ways of minimizing the electromagnetic interference? (2)

12. Define electromagnetic compatibility.(EMC) (2)

13. What are the main causes of group loop currents? (2)

14. What are the limitations of single point grounding method? (2)

15. What is the necessity of grounding and state is advantages. (2)

16. What is meant by ground loop? How it is created? (2)

17. What are the sources of errors in bridge measurement? (2)

18. Define standardization. (2)

19. Give the relationship between the bridge balance equation of DC bridge and AC  bridge (2)

20. What does a bridge circuit consists of ? (2)

PART – B

1. (i) Explain in detail about the laboratory type DC potentiometer. (10)

    (ii) Give the applications of AC potentiometers. (6)

2. (i) Describe about the multiple earth and earth loops. (10)

    (ii) Explain the different techniques of grounding. (6)

3. Explain voltage sensitive self balancing bridge, and derive the bridge  sensitivity of voltage sensitive bridge with fundamentals. (16)

4. (i) With fundamentals distinguish between DC and AC potentiometers, and give any two specific applications for each. (8)

    (ii) Discuss the advantages and limitations of electromagnetic interference in measurements. (8)

5. (i) Explain Kelvin’s double bridge method for the measurement of low resistance. (8)

    (ii) Explain how inductance in measured by using Maxwell’s bridge. (8)

6. (i) Explain the working principle of Anderson’s bridge and also derive its

     balance equations. (8)

    (ii) Explain the working principle of Schering bridge and also derive its balance    

     equations. (8)

UNIT – IV

STORAGE AND DISPLAY DEVICES

PART – A

1. What is meant by deflection sensitivity of a CRT? (2)

2. Write two advantages of LED in electronic displays. (2)

3. State the features of ink-jet printers. (2)

4. Differentiate between LED and LCD. (2)

5. What are the different types of magnetic recording? (2)

6. What are the different materials used in LED? Also name the colours    emitted. (2)

7. Give a short note on LED. (2)

8. What is delayed sweep? (2)

9. Explain the characteristics of Time domain output device using in measurements. (2)

10. Explain the following term as applied to digital displays. (2)

     3 ½ digit and 4 ½ digit displays.

11. What is a recorder and what are the types of it? (2)

12. What is magnetic tape recorder? (2)

13. What are the basic components of a tape recorder? (2)

14. List the advantages and disadvantages of direct recording? (2)

15. What are display devices? (2)

16. What are the advantages and disadvantages of digital data recording? (2)

17. Compare line printer and dot matrix printer. (2)

18. What is CRO? What are the sections of a CRO? (2)

19. List the advantages of digital storage oscilloscope. (2)

20. Differentiate between dual trace and dual beam CRO. (2)

21. List out the advantages of X-Y records over strip chart recorder. (2)

22. List the advantages of laser printer. (2)

23. List the two advantages of digital X-Y recorder. (2)

24. What is power requirement of LCD? (2)

25. What are Lissajous patterns? (2)

PART – B

1. Describe the construction and working of LCDs, mention the difference

    between light scattering and field effect types of LCDs, also explain the

    advantages of LCDs (16)

2. (i) Give the basic block diagram of a digital data recording system (8)

    (ii) Explain with a neat sketch

a) Dot matrix displays

b) Bar graph displays (8)

3. (i) Explain the basic elements of a magnetic tape recorder. (8)

    (ii) Explain the block diagram of oscilloscope with a neat sketch (8)

4. (i) Describe the basic components of a CRT. (10)

    (ii) Write short notes on liquid crystal displays. (6)

5. (i) With a neat block diagram, explain the working of digital storage oscilloscope. (8)

    (ii) Discuss briefly about the applications of LED. (8)

6. (i) What are the various types of oscilloscopes? (4)

    (ii) Discuss in detail the construction of a storage type oscilloscope. What are the

     accessories for a CRO? (12)

7. (i) Explain in detail, how the data is stored in a magnetic disk and tape? (10)

    (ii) Describe the performance of digital plotter. (6)

8. (i) Explain the block diagram of a general purpose oscilloscope and also

    describe about the observation of waveform on CRO. (10)

    (ii) Write short notes on Printers. (6)

UNIT – V

TRANSDUCERS AND DATA ACQUISITION SYSTEMS

PART – A

1. Give the factors to be considered for selecting a transducer. (2)

2. Why is an A/D converter usually considered as an encoder? (2)

3. Define inverse transducer with example. (2)

4. Explain the principle of piezoelectric transducers and name any two

    piezoelectric materials. (2)

5. Name the transducers used for sensing acceleration. (2)

6. Mention the use of capacitive transducers. (2)

7. Classify the transducers and what is the other name of it. (2)

8. What are active and passive transducers? Give examples. (2)

9. What are the characteristics of transducers? (2)

10. What is meant by data acquisition system? List its types. (2)

11. Give the operating principle of a resistive transducer. Also give some examples (2)

12. What is piezoelectric effect? (2)

13. What is LVDT? (2)

14. List the advantages and disadvantages of LVDT. (2)

15. What is thermocouple? (2)

16. What are the advantages and disadvantages of LVDT? (2)

17. What is seeback voltage? (2)

18. What is strain gauge? List its types. (2)

19. What is gauge factor? Give its expression. (2)

20. What is resistance thermometer? (2)

21. What are the salient features of thermistor? (2)

22. What are capacitive transducers? Give the expression for a capacitance of

      a capacity transducer. (2)

23. What are optical detectors? List its types. (2)

24. What are photoelectric transducers? (2)

25. List the types of A/D and D/A converters. (2)

26. Draw the transfer characteristics of ADC and DAC. (2)

27. What are the advantages and disadvantages of dual slope ADC? (2)

28. Give a short note on data acquisition system. (2)

29. What is the composition of materials used in thermistor? (2)

30. State the laws of thermoelectric. (2)

PART – B

1. (i) Explain the principle of inductive and capacitive transducer. (8)

    (ii) Explain the construction and working of LVDT with a neat sketch (8)

2. (i) Explain different strain gauges with their principle of operation. (8)

    (ii) Discuss in detail about resistive transducers. (8)

3. (i) Explain the various types of temperature transducers. (8)

    (ii) Explain the function of piezoelectric transducer. (8)

4. (i) Explain the binary weighted resistor technique of D/A conversion.(8)

    (ii) Define the following terms for D/A converters:

     a) Resolution b) Accuracy c)Monotonicity and d) conversion time(8)

5. (i) Explain the resistive transducer with respective to potentiometer. (4)

    (ii) Explain the capacitive transducer. (6)

    (iii) Describe the piezoelectric transducer and give the formula for coupling

    coefficient. (6)

6. (i) Explain schematic block diagram of a general data acquisition system

    (DAS) and give its objectives (6)

    (ii) Discuss R-2R ladder type D/A converter. (6)

    (iii) For a 5 bit ladder, if the input levels are 0 = 0V and 1 = 10V, what are

    the output voltages for each bit? (4)

7. Explain the various types of ADC with suitable sketches. (16)

8. Explain the working principle of various types of DAC with neat sketches. (16)

9. (i) Explain the principle of operation a thermocouple with neat sketch. (10)

    (ii) Give a short note on single and multi channel DAS. (6)

10.(i) Explain the different types of optical encoders. (8)

    (ii) Explain the successive approximation type ADC. (8)

Result Analysis:Subject Wise:SEMESTER 6 (2008 Batch)

ENROLL NO	EM-3	PE-2	Micro Conroller	High voltage	Measu-rement	Electro Magnet	SPI
80070109001	CC	AB	AA	BB	BB	BB	8.2
80070109003	DD	CC	AB	BB	BC	BC	6.83
80070109004	BB	BB	BC	BC	CC	BC	7.2
80070109005	BB	BB	AB	BB	BB	BB	8.17
80070109006	BC	BC	BB	BC	BB	BB	7.43
80070109007	BB	BB	AA	AB	BB	BC	8.43
80070109008	BC	BB	AA	BC	AB	BB	8.13
80070109009	CD	BB	AB	BC	BB	BC	7.37
80070109010	CC	BC	AB	BB	BB	BB	7.63
80070109011	BC	BB	AB	BC	AB	BB	7.97
80070109012	FF	CC	AB	CD	BC	CC	5.47
80070109013	CC	BB	BB	BC	BB	BC	7.37
80070109014	CC	BC	AA	AB	AB	BB	8.17
80070109015	BC	CC	AB	BC	CC	BC	6.97
80070109016	CC	CC	CC	BC	BB	BC	6.63
80070109017	BB	BB	AA	BC	BB	AB	8.23
80070109018	BC	BB	AA	BB	BC	BB	8
80070109019	CC	CD	CC	CD	BC	CD	5.67
80070109020	FF	BC	BB	CC	BC	CC	5.7
80070109021	CD	CC	BB	CC	BC	BC	6.43
80070109022	CC	CC	CC	BC	AB	BC	6.8
80070109023	CD	CC	BB	CC	BC	CC	6.33
80070109024	BB	BC	BB	BC	BC	BB	7.43
80070109025	CC	BB	BB	BC	BB	CC	7.47
80070109026	CC	BC	BC	BC	BB	BC	7.13
80070109027	CC	CC	BC	DD	CC	CC	5.77
80070109028	BC	BB	BB	AB	BB	BC	7.93
80070109029	CC	CC	BC	CC	CC	CC	6.17
80070109030	FF	CC	BC	FF	BC	CD	4.03
80070109031	CC	BC	CC	CC	CC	CC	6.2
80070109032	CC	BB	AA	BB	BB	BB	8
80070109033	CD	CC	BC	BC	CC	CC	6.2
80070109034	BC	BC	BB	CC	AB	CC	7.2
80070109035	CD	BC	BB	CC	CC	CC	6.2
80070109036	FF	CC	FF	FF	DD	FF	2.27
80070109037	CC	CC	BB	CD	BC	CC	6.3
80070109039	BB	BB	AA	AB	AB	BB	8.7
80070109040	CC	CC	BC	FF	BC	CC	5.13
80070109041	CC	BC	AB	CC	BB	BC	7.13
80070109042	FF	CC	CC	FF	CC	CC	3.8
80070109043	CC	CC	CC	DD	BC	CC	5.77
80070109045	DD	BC	CC	BC	BC	CC	6.23
80070109046	BC	AB	AB	AB	AB	BC	8.47
80070109047	FF	DD	BC	BC	CC	DD	4.77
80070109049	CC	CC	BB	BB	BB	BC	7.17
80070109050	BC	BC	AB	CD	BB	BC	7.1
80070109051	CC	CC	BC	CC	BC	BC	6.43
80070109052	CC	CC	AB	CC	BB	CD	6.58
80070109053	BC	CC	BC	DD	BB	BC	6.37
80070109054	CC	BC	BB	CC	AB	BC	7.13
80070109055	BC	BB	AB	CC	BB	BB	7.6
80070109056	BC	BC	AB	BC	BB	AB	7.7
80070109057	BB	BC	AB	BB	AB	BC	8.03
80070109058	BC	BB	BB	BC	AB	BB	7.8
80070109059	FF	BC	BC	BC	BB	BC	6
80070109060	FF	BB	BC	CC	CC	BC	5.67
80070109061	BB	BB	BB	BB	AB	BB	8.17
80070109062	CC	CD	CC	BC	BC	CC	6.17
80070109063	BC	BC	BC	BC	BB	CC	7.07
80070109064	BC	AB	AB	BC	BB	BB	8
80070109302	FF	CC	BB	CC	BC	CC	5.5
80070109303	AB	BB	AA	AB	AB	BB	8.87
80070109305	CC	CC	BB	BC	CC	CD	6.43
90073109001	CC	BC	CC	DD	CC	FF	5.2
90073109002	DD	CC	BB	BC	BC	CC	6.37
90073109003	DD	CC	CC	DD	BC	FF	4.83
90073109004	BC	CD	BC	BC	CC	DD	6.13
90073109005	FF	CD	DD	FF	FF	FF	1.67
90073109006	BC	CD	CC	CC	BC	DD	5.93

SUBJECT/GRADE	AA	AB	BB	BC	CC	CD	DD	FF
Electrical Machines - III	0	1	8	17	24	6	3	10
Power Electronics - II	0	3	18	18	24	5	1	0
Microcontroller	9	15	18	14	11	0	1	1
High Voltage Engineering	0	6	9	25	15	4	5	5
Electrical Measurement	0	12	23	19	13	0	1	1
Theory of Electromagnetics	0	2	16	21	19	4	3	4