15EE42T: Electrical Measurements and Measuring Instruments Electrical 4th Sem Syllabus for Diploma DTE Karnataka C15 Scheme

Electrical Measurements and Measuring Instruments detail DTE Kar Diploma syllabus for Electrical And Electronics Engineering (EE), C15 scheme is extracted from DTE Karnataka official website and presented for diploma students. The course code (15EE42T), and for exam duration, Teaching Hr/week, Practical Hr/week, Total Marks, internal marks, theory marks, duration and credits do visit complete sem subjects post given below. The syllabus PDFs can be downloaded from official website.

For all other electrical 4th sem syllabus for diploma c15 scheme dte karnataka you can visit Electrical 4th Sem Syllabus for Diploma C15 Scheme DTE Karnataka Subjects. The detail syllabus for electrical measurements and measuring instruments is as follows.

Pre-requisites:

Basic knowledge about the elements of electrical engineering, electrical
circuits, digital and analog electronics.

Course Objectives:

To make the students-understand the significance of electrical measurements in the field of engineering , interpret the principle, study the construction, operation and applications of various analog and digital instruments used for measuring electrical and non-electrical quantities, Studythe methods of extending the range of the meters and the calibration techniques.

Course Outcomes:

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Unit I Characteristics& Classification of instruments 04hrs

Characteristics of instruments, precision, accuracy, sensitivity, resolution, tolerance, errors, types of errors, classification of instruments, necessity of torque instruments & types.

Unit II Construction & Operation of indicating instruments 12hrs

Construction and operation of moving coil, moving iron voltmeter and ammeter, calibration and range extension of voltmeter, ammeter, mention the types, applications, advantages and disadvantages.

Unit III Construction & Operation of Watt meter & energy meter 08hrs

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Unit IV Measurement of Resistance, Inductance and Capacitance 04hrs

Measurement of unknown resistance by using wheatstone’s bridge, Kelvin’s double bridge. Measurement of inductance by using Maxwell’s bridge. Measurement of capacitance by using Schering Bridge.

Unit V Digital meters 12hrs

Block diagram and explain operation of Digital frequency meter, digital synchroscope, digital non contact type tachometer, digital p.f. meter, digital energy meter, digital trivector meter, digital tong tester, digital LCR meter, digital multimeter and voltmeter (only BLOCK DIAGRAMS) and their applications, advantages and disadvantages, comparison with analog meters.

Unit VI Transducers, Sensors & Signal conditioning circuits 12hrs

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Reference Books:

1. Electrical Measurements & measuring instruments by A.K.SawhneyDhanpatRai
2. Electrical Measurements & measuring instruments by R.K.Rajput, S.CHAND Publications
3. Electronic Measurements& instrumentation by R.K.Rajput, S.CHAND Publications
4. Electrical Measurements & measuring instruments By G.K.BanerjeePHI Publications
5. Instrumentation & Control by D.Patranabis by PHI Publications.
6. Electronic Instrumentation by H.S KALSI, Tata McGRAW HILL

E-Resources:

1. www.academia.edu/../A_K.Sawhney-A_course_in_Electrical_and_Elect.
2. hllps:en.wikipedia.org..Lislof’eleclncalandeleclronicmeasuring
3. Nptel.iitg.ernet.in >.. > Eleclrical andEleclronic Measuremenls (Video)
4. www.npl.co.uk/../beginners-guide-to-measurement-in-electronic-and-ele.

Course Delivery:

The Course will be delivered through Lectures, Classroom Interaction, Animations, Group Discussion, Exercises and Assignments.

Suggested Student activity:

Prepare a self hand-written report of minimum 2 pages on any one of the following:(Each group has to carry out the activity individually and report should be maintained).

1. Methods adopted for calibration of digital energy meters in ESCOMS.
2. Standard meters used in nearby industries or substations.
3. Applications of various digital measuring instruments in a particular industry.
4. Applications of various transducers in a particular industry. Mention the purpose.
5. Specifications of various meters.
6. Specifications of various transducers.
7. Special meters used for detecting cable faults.
8. Meggar and Earth tester.
9. CTs and PTs.
10. Manufacturing process of digital meters.

Model Question Paper:

(CIE)- example

1. Define
1. precision
2. accuracy
3. sensitivity
4. resolution
5. tolerance
6. errors.
2. Explain the necessity of torque in instruments. List the types of torque.
3. Explain the construction and operation of PMMC type moving coil with neat sketch.
4. Design a single range d.c.milliammeter using basic movement with an internal resistance Rm =30ohm and an full deflection current Im=1mA.Range is 0-10mA

Note: Internal Choice may be given in each CO at the same cognitive level (CL).

COURSE CONTENT OF ELECTRICAL MEASUREMENT & MEASURING INSTRUMENTS

1. Define error, precision, accuracy, sensitivity, resolution and tolerance. Explain the types of errors- gross error, random error, systematic error-environmental, observation error and instrumental error. 01
2. Classifications of measuring instruments: Absolute and secondary instruments, types of secondary instruments- indicating, integrating and recording instruments- give examples. 01
3. List the essential torques – Deflecting torque, control torque and damping torque in indicating instruments. Explain how deflecting torque is produced. 01
4. Explain with diagram spring control method (only) of producing control torque. Explain with diagrams the methods of producing damping torque- air friction and eddy current methods. 01
5. Moving coil instruments: Mention the types, Explain the principle, construction and operation of PMMC typeinstrument. 01
6. Moving iron instruments: Mention the types, Explain the principle, construction and operation of repulsion type moving iron instrument. 01
7. Applications of moving coil & moving iron instruments: Explain how PMMC instrument can be used as an ammeter. Explain how PMMC instrument can be used as an voltmeter. Explain how MI instrument can be used as an ammeter. Explain how MI instrument can be used as an voltmeter. Mention how the PMMC instrument can be used for measuring AC quantities. 01
8. List and explain the errors in PMMC instruments. List and explain the errors in moving iron instruments. Mention the advantages and disadvantages of PMMC instruments. Mention the advantages and disadvantages of moving iron instruments. 01
9. Calibration: Define calibration, explain the necessity of calibrating the instruments. Explain with circuit diagram – calibration of voltmeter by comparison method using a standard meter. 01
10. Explain with circuit diagram – calibration of voltmeter by using DC potentiometer. 01
11. Explain with circuit diagram – calibration of ammeter by comparison method using a standard meter. 01
12. Explain with circuit diagram calibration of ammeterby using a DC potentiometer. 01
13. Explain with circuit diagram range extension of DC ammeter using shunts. Write the equations. Solve simple problems on extending the range of DC ammeters. 01
14. Explain with circuit diagram range extension of DC voltmeter using multipliers. Write the equations. Solve simple problems on extending the range of DC voltmeters. 01
15. Range extension ofA.C metersusing instrument transformersExplain range extension of A.C ammeters using CT. Explain range extension of A.C voltmeters using PT. 01
16. Explain range extension of wattmeter using CT and PT. Mention the precaution to be taken while opening the secondary of CT. Explain the term burden as referred to instrument transformers. 01
17. List the typesof wattmeter. Explain the principle, construction and operation of single phase electro-dynamometer (electro-dynamic ) type wattmeter. 01
18. List and explain errors in wattmeters. List the merits and de-merits of dynamometer type wattmeter. 01
19. Explain with circuit diagram measurement of power by two wattmeter method, solve simple problems. 01
20. Explain calibration of wattmeter by comparison method using a standard meter. 01
21. List the typesof energy meter. Explain the principle ,construction and operation of single phase induction type energy meter. 01
22. Explain the errors and adjustments in single phase induction type energy meter. 01
23. Explain calibration of single phase energy meter with circuit diagram. 01
24. Solve simple problems on errors in energy meter 01
25. Classify resistance -low, medium and high. Explain measurement of unknown resistance by using Wheatstone bridge. Solve simple problems. 01
26. Explain measurement of unknown resistance by using Kelvin’s double bridge. Solve simple problems. 01
27. Explain measurement of inductance by using Maxwell’s bridge. Solve simple problems. (inductance bridge only. 01
28. Explain measurement of capacitanceby using Schering Bridge. Solve simple problems. 01
29. Explain with a general block diagram, the basic building blocks of digital meters. Mention the advantages and dis-advantages of digital meters. Compare analog and digital meters. 01
30. Explain the operation of a digital Voltmeter with a (general) block diagram. (showing the basic building blocks like attenuator, signal conditioning, rectifier, analog to digital converter and display). 01
31. Explain the operation of a digital multi-meter with a block diagram. 01
32. Explain the operation ofdigital tong tester with a (general) block diagram. List their applications. 01
33. Explain the operation of digital Energy meter with a (general) block diagram. 01
34. Explain the operation of digital frequency meter with a block diagram. List the applications, advantages and disadvantages. 01
35. Explain operation of digital power factor meter with a (general) block diagram. List the applications, advantages and disadvantages 01
36. Explain operation of digital synchroscope with a (general) block diagram. List the applications, advantages and disadvantages. 01
37. Explain operation of digital non-contact type tachometer with a block diagram. List the applications, advantages and disadvantages. 01
38. Explain the operation ofdigital tri-vector meter with a (general) block diagram. Mention the applications, advantages and disadvantages, 01
39. Explain the operation of a digital LCR meter with a block diagram. 01
40. Explain the operation of a digital LCR meter with a block diagram. Mention the applications. 01
41. Define transducer, classify the various types of transducers and factors / characteristics considered for selection of transducers. 01
42. Explain the need for signal conditioning. Explain the operation of A.C. signal conditioning system with a block diagram. 01
43. Explain D.C. signal conditioning system with a block diagram. 01
44. Explain the operation of a strain gauges (resistance wire- linear type ) with a diagram. Explain the principle, construction and operation of thermoelectric pyrometer with a diagram. List the applications of thermoelectric pyrometer. 01
45. Explain the operation of an optical pyrometer (dis-appearing filament type) with neat diagram. List the applications. 01
46. Explain the operation of LVDT with a diagram. List the applications. 01
47. Explain the operation of RVDT (Rotary variable differential transformer) with neat diagram. List the applications. 01
48. Explain the operation of Opto-sensor with a (general ) diagram. List the applications. 01
49. Explain the operation of Peizo-electric(device) transducer with a diagram . List the applications. 01
50. Explain operation of Bolometer for AF power measurement with a block diagram. 01
51. Explain operation of Bolometer for RF power measurement with a block diagram. 01
52. Explain the applications of Bolometer in RF & AF power measurement. 01

Model Question Paper:

PART – A

1. Define
1. precision
2. accuracy
3. sensitivity
4. resolution
5. tolerance
6. errors. 5
2. Define calibration? Mention the merits. 5
3. Illustrate the methods employed for range extension in D.C ammeter& voltmeter. 5
4. A wattmeter is having a voltage range of 150/300v and current range of 2.5/5A, with P=625W ,determine wattmeter constant 5
5. Classify the types of bridges used for measuring unknown R,L,C 5
6. Write a neat block diagram of digital p.f.meter. 5
7. Define transducer? List any three types of transducers. 5
8. List any three merits &any two de-merits of Digital voltmeter. 5
9. Explain with neat block diagram explain operation of digital tong tester. 5

PART – B

1. Define error? Mention the types of errors. 5
2. If the reading s of the two wattmeters connected across the load share 250W and 1.5KW, determine p.f. of the load. 5
1. Explain the construction and operation of PMMC type moving coil voltmeter with neat sketch. 7
2. List any three merits of PMMC voltmeter. 3
1. Describe the calibration a voltmeter with a neat circuit diagram. 6
2. Design a single range d.c milliammeter using basic movement with an internal resistance Rm=30ohm and a full scale deflection current Im=1mA.Range is 0-10mA.4
1. Describe the calibration wattmeter with a neat circuit diagram. 7
2. List the any 3 errors in wattmeters. 3
1. Describe the measurement of unknown resistance using Wheat stone’s bridge with a neat circuit diagram. 6
2. Determine the value resistance required to balance the bridge. If the three arms of the wheat stone’s bridge are having resistances of 50Q,100Q,150Q respectively, find the value resistance required to balance the bridge. 4
1. Explain the block diagram of digital tri-vector meter. 6
2. List any two advantages and disadvantages of digital tong tester. 4
1. Explain with a block diagram the operation ofdigital LCR meter. 6
2. Compare analog frequency meter with digital frequency meter. 4
1. Explain LVDT with a neat circuit diagram. 7
2. List any three applications of RVDT.
1. Explain the block diagram of Bolometer for AF power measurement.7
2. List any three applications of opto-sensor. 3
1. Sketch block diagram of digital non contact type digital tachometer. 6
2. Summarize the necessity of signal conditioning? 4

For detail syllabus of all other subjects of BE Electrical, C15 scheme do visit Electrical 4th Sem syllabus for C15 scheme.

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