Electric Motors and Transformers detailed Syllabus for Electrical Power System (EP), I – scheme has been taken from the MSBTE official website and presented for the diploma students. For Subject Code, Subject Name, Lectures, Tutorial, Practical/Drawing, Credits, Theory (Max & Min) Marks, Practical (Max & Min) Marks, Total Marks, and other information, do visit full semester subjects post given below.
For all other Diploma in Electrical Power System (EP) Syllabus for 4th Sem I – Scheme MSBTE, do visit Diploma in Electrical Power System (EP) Syllabus for 4th Sem I – Scheme MSBTE Subjects. The detailed Syllabus for electric motors and transformers is as follows.
Rationale:
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List of Competencies:
The aim of this course is to help the student to attain the following industry identified competency through various teaching learning experiences:
- Use electric motors and transformers.
COURSE OUTCOMES (COs)
The theory, practical experiences and relevant soft skills associated with this course are to be taught and implemented, so that the student demonstrates the following industry oriented COs associated with the above mentioned competency:
- Use different electric motors.
- Use DC machines.
- Use single phase transformer for different applications.
- Use three phase transformers for different applications.
- Use relevant special purpose transformers for different applications.
SUGGESTED PRACTICALS/ EXERCISES
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Performance Indicators
- Preparation of experimental set up 20
- Setting and operation 20
- Safety measures 10
- Observations and Recording 10
- Interpretation of result and conclusion 20
- Answer to sample questions 10
- Submission of report in time 10
The above PrOs also comprise of the following social skills/attitudes which are Affective Domain Outcomes (ADOs) that are best developed through the laboratory/field based experiences:
- Follow safety practices.
- Practice good housekeeping.
- Demonstrate working as a leader/a team member.
- Maintain tools and equipment.
- Follow ethical Practices.
The ADOs arc not specific to any one PrO. but are embedded in many PrOs. Hence, the acquisition of the ADOs Lakes place gradually in the student when s/he undertakes a series of practical experiences over a period of lime. Moreover, the level of achievement of the ADOs according to Krathwohl’s Affective Domain Taxonomy should gradually increase as planned below:
- Valuing Level’ in D’year
- Organizing Level’ in 2nyear
- Characterizing Level* in 3I(I year.
MAJOR EQUIPMENT/ INSTRUMENTS REQUIRED
The major equipment with broad specification mentioned here will usher in uniformity in conduct of experiments, as well as aid to procure equipment by administrators. i DC series and shunt machines at least one each (up to 230 V, 5 hp). 1 to 5
- DC Ammeter range (0-5-10A), Portable analog PMMC type as per relevantBIS standard. 2, 3, 4, 5
- DC Voltmeter Range (O-15O/3OOV), Portable analog PMMC type as per relevant BIS standard. 2,3,4, 5
- AC Ammeter range (0-5.-5-10A). Portable analog MI type as per relevant BIS standard 6 to 12
- AC Voltmeter Range (0-75/150/300V), Portable analog MI type as per relevant BIS standard. 6 to 12
- Lamp load of 10-20 A 7, 9, 12
- Rheostat (0-500 Ohm. 2.A), Nichrome wire wound rheostat on epoxy resin or class F insulating tube with two fixed and one sliding contact. 2,3,4,5
- Rheostat (0-100 Ohm, 5A). Nichrome wire wound rheostat on epoxy resin or class F insulating tube with two fixed and one sliding contact. 2, 3,4, 5
- Rheostat (0-50 Ohm, 10A), Nichrome wire wound rheostat on epoxy resin or class F insulating tube with two fixed and one sliding contact 1, 2, 3, 4, 5
- Rheostat (0-350 Ohm.l .5A). Nichrome wire wound rheostat on epoxy resin or class F insulating tube with two fixed and one sliding contact. 1,2, 3,4, 5
- D. C. Supply, 230 V,25 A. 1,2, 3,4, 5
- Single phase transformer of suitable size (500 VA to 1 kVA). 7 to 13
- Three phase transformer of suitable size (IkVA to 3 kVA). 14
- Single phase auto transformer 0-270 V, 15 A 15
- CT of suitable ratio 16
- PT of suitable ratio 17
- Isolation transformer of suitable ratio 18
- Pulse transformer of suitable ratio 19
- Wattmeter 0-300/600 V, 5/10 A. for use in AC circuits. 7, 8, 9
- LPF Wattmeter, 0-300/600 V, 1A to 2 for use in AC circuits 8
UNDERPINNING THEORY COMPONENTS
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Unit-I Introduction to electric motors
Outcomes:
- Explain the principle of working of given electric motor.
- Identify the different parts and their respective materials of the given motor with justification.
- Explain with sketches the functions of the given parts of the specified type of motor.
Topics:
- Electric motors: principles of operation of different motors.
- Construction and representation: parts with their materials. Schematic diagrams.
- Functions of parts of motors:Functions of the various parts of different electric motors.
Unit – II DC Machines
Outcomes:
- Explain with sketches the working principle of the specified type of DC machine.
- Describe with sketches the procedure of the DC shunt motor brake test.
- Recommend relevant DC motor for given application with justification.
- Calculate the torque, speed, output power and efficiency of the given DC motor.
- Describe with sketch the working of the starter for the given type of DC motor.
- Explain with diagram using the given methods to control the speed of specified DC motor.
- Explain with diagram the working of the brushless DC motor.
Topics:
- DC machine: Types of DC machines. Flemings right hand rule, Flemings left hand rule, Principle of operation of de generator and motor, Back e.m.f. and its significance , Voltage equation of DC motor
- Torque and Speed; Armature torque, Shaft torque, BHP, Brake test, losses, efficiency
- DC motor starters: Necessity, two point and three point starters.
- Speed control of DC shunt and series motor: Flux and Armature control.
- Brushless DC Motor: Construction and working.
Unit- III Single Phase Transformers
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Unit-IV Three Phase Transform ers
Outcomes:
- Identify the different parts of the given type transformer.
- Describe with diagrams various connections of the given three phase transformer.
- Compare distribution transformer and power transformer on the given criteria.
- Calculate the given load sharing between two given transformers operating in parallel.
- Describe the criteria with justification for selection of the transformer for the gi ven application.
- Describe with circuit diagram the Polarity and Phasing out tests on the given type of transformer.
- Explain the effects of harmonics on the operation of transformers.
Topics:
- Bank of three single phase transformers. Single unit of three phase transformer.
- Distribution and Power transformers.
- Construction, cooling. Three phase transformers connections as per IS:2026 (part IV)-1977. Three phase to two phase conversion (Scott Connection),
- Selection of transformer as per IS: 10028 (Part I)-l 985, Criteria for selection of distribution transformer, and power transformer, Amorphous Core type Distribution Transformer, Specifications of three-phase distribution transformers as per IS: 1180 (part I)-1989
- Need of parallel operation ofthree phase transformer, Conditions for parallel operation.
- Polarity tests on mutually inductive coils and single phase transformers; Polarity test, Phasing out test on Three-phase transformer.
- Harmonics and their effects on transformers.
Unit- V Special purpose Transform ers
Outcomes:
- Explain with circuit diagram the working of the given type of special purpose transformer.
- Calculate ratio for the specified instrument transformer of the given rating.
- Explain with justification the use of isolation transformer for the given application.
- Differentiate between the given two types of special purpose transformers.
- Explain the importance ofK factor of transformers.
Topics:
- Single phase and three phase auto transformers: Construction, working and applications.
- Instrument Transformers: Construction, working and applications of Current transformer and Potential transformer.
- Isolation transformer: Constructional Features and applications.
- Single phase welding transformer: constructional features and applications.
- Pulse transformer: constructional features and applications.
- K factor of transformers: overheating due to non-linear loads and harmonics.
SUGGESTED STUDENT ACTIVITIES
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SUGGESTED SPECIAL INSTRUCTIONAL STRATEGIES (if any)
These are sample strategies, which the teacher can use to accelerate the attainment ofthe various outcomes in this course:
- Massive open online courses (MOOCs) may be used to teach various topics/sub topics.
- L in item No. 4 does not mean only the traditional lecture method, but different types of teaching methods and media that are to be employed to develop the outcomes.
- About 15-20% of the topics/sub-topics which is relatively simpler or descriptive in nature is to be given to the students for self-directed learning and assess the development of the COs through classroom presentations (see implementation guideline for details).
- With respect to item No.10, teachers need to ensure to create opportunities and provisions for co-curricular activities.
- Use Flash/Animations to explain various theorems in circuit analysis
- Guide students in undertaking micro-projects.
SUGGESTED MICRO-PROJECTS
Only one micro-project is planned to be undertaken by a student that needs to be assigned to him/her in the beginning of the semester. In the first four semesters, the micro-project arc group-based. However, in the fifth and sixth semesters, it should be preferably be individually undertaken to build up the skill and confidence in every student to become problem solver so that s/he contributes to the projects of the industry. In special situations where groups have to be formed for micro-pro jects, the number of students in the group should not exceed three. The micro-project could be industry application based, internet-based, workshopbased, laboratory-based or field-based. Each micro-project should encompass two or more COs which are in fact, an integration of PrOs, UOs and ADOs. Each student will have to maintain dated work diary consisting of individual contribution in the project work and give a seminar presentation of it before submission. The total duration of the micro-project should not be less than 16 (sixteen) student engagement hours during the course. The student ought to submit micro-project by the end of the semester to develop the industry oriented COs. A suggestive list of micro-projects are given here. Similar micro-projects could be added by the concerned faculty:
- Types of D ,C. Machines: Prepare chart showing different material used for various parts of d.c. machines.
- D.C. Machines: Collect specification from different manufacturers and prepare report.
- Single phase transformers: Prepare a simple model of single phase transformer.
- Three phase transformers: Collect photographs with details of various power/ distribution transformer and identify different parts (specification, application, cost, features, manufacturer)
- Special transformers: Prepare report on different special transformer.(specification, application, cost, features, manufacturer)
SUGGESTED LEARNING RESOURCES
For the complete Syllabus, results, class timetable, and many other features kindly download the iStudy App
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SUGGESTED SOFTWARE/LEARNING WEBSITES
- https://www.youtube.com/watch?v=fWyzPdyCAzU
- https://www.youtube.com/watch?v=IC-PWxtcirI
- https://www. youtube. com/watch?v=H2hYUu81PY0
- https://www.youtube.com/watch?v=mKbyFpoNZ_w
- https://www.youtube.com/watch?v=b2MXK9oi Gs
- https://www.youtube.com/watch?v=Slli_20pAWiE
- www.nptcl.ac.in
- www.wikipedia.com
- www.electricaltechnology.org
- www.howstuffworks.com
- www.electrical4u.com
For detail Syllabus of all other subjects of Electrical Power System, I – scheme do visit Electrical Power System 4th Sem Syllabus for I – scheme.
For all Electrical Power System results, visit MSBTE Electrical Power System all semester results direct links.