# Course Title: Solve problems in electromagnetic circuits

## Part B: Course Detail

Teaching Period: Term2 2012

Course Code: EEET6784C

Course Title: Solve problems in electromagnetic circuits

School: 130T Vocational Engineering

Campus: City Campus

Program: C6112 - Advanced Diploma of Engineering Technology - Electrical

Course Contact: Program Manager

Course Contact Phone: +61 3 9925 4468

Course Contact Email: engineering-tafe@rmit.edu.au

Name and Contact Details of All Other Relevant Staff

Zoran Savic
Phone: +613 9925 2000
Email:  zoran.savic@rmit.edu.au

John Charles
Email: john.charles@rmit.edu.au

Marko Dumovic
Email: marko.dumovic@rmit.edu.au

Olga Gredeskoul
Phone: +613 9925 4392
Email: olga.gredeskoul@rmit.edu.au

Nominal Hours: 60

Regardless of the mode of delivery, represent a guide to the relative teaching time and student effort required to successfully achieve a particular competency/module. This may include not only scheduled classes or workplace visits but also the amount of effort required to undertake, evaluate and complete all assessment requirements, including any non-classroom activities.

Pre-requisites and Co-requisites

UEENEEE004A Solve problems in multiple path d.c. circuits

Course Description

This learning unit introduces the principle of electromagnetism, and its applications. It covers essential knowledge and procedures for determining correct operation of electromagnetic circuits and providing solutions as they apply to electrical installations and equipment.
It encompasses working safely, power circuit problems solving processes, including the use of voltage, current and resistance measuring devices, providing solutions derived from measurements and calculations to predictable problems in multiple path circuit.

National Codes, Titles, Elements and Performance Criteria

 National Element Code & Title: UEENEEG001B Solve problems in electromagnetic circuits Element: 1. Prepare to work on electromagnetic circuits Performance Criteria: 1.1 OHS procedures for a given work area are identified, obtained and understood. 1.2 OHS risk control work preparation measures and procedures are followed. 1.3 The nature of the circuit(s) problem is obtained from documentation or from work supervisor to establish the scope of work to be undertaken. 1.4 Advice is sought from the work supervisor to ensure the work is coordinated effectively with others. 1.5 Sources of materials that may be required for the work are established in accordance with established procedures. 1.6 Tools, equipment and testing devices needed to carry out the work are obtained and checked for correct operation and safety. Element: 2. Solve multiple path electrical circuit problems Performance Criteria: 2.1 OHS risk control work measures and procedures are followed. 2.2 The need to test or measure live is determined in strict accordance with OHS requirements and when necessary conducted within established safety procedures. 2.3 Circuits are checked as being isolated where necessary in strict accordance OHS requirements and procedures. 2.4 Established methods are used to solving circuit problems from measure and calculated values as they apply to multiple path electrical circuit. 2.5 Unexpected situations are dealt with safely and with the approval of an authorised person. 2.6 Problems are solved without damage to apparatus, circuits, the surrounding environment or services and using sustainable energy practices. Element: 3. Complete work and document problem solving activities Performance Criteria: 3.1 OHS work completion risk control measures and procedures are followed. 3.2 Work site is cleaned and made safe in accordance with established procedures. 3.3 Justification for solutions used to solve circuit problems is documented. 3.4 Work completion is documented and an appropriate person or persons notified in accordance with established procedures.

Learning Outcomes

Details of Learning Activities

This unit covers determining correct operation of electromagnetic circuits and providing solutions as they apply to electrical installations and equipment. It encompasses working safely, power circuit problems solving processes, including the use of voltage, current and resistance measuring devices, providing solutions derived from measurements and calculations to predictable problems in multiple path circuit.

Classroom tutorial activities: to consolidate the concepts of electromagnetism, and electromagnetic applications. This includes calculations for electromagnetic quantities, voltage generation, motor torque, efficiency and power calculation.

Following topics will be covered: magnetism, electromagnetism, magnetic units, magnetization curve, electromagnetic induction, Inductance, Electromagnetic applications, relays, contactors, rotating machines, generators, motors, DC series, shunt and compound motors, motor loads, speed torque characteristics,

It is expected that students will require approximately 20% of course hours to be allocated for independent study to do project research, design, construction, testing and problem solving activities.

Teaching Schedule

 Wk Session Activity Performance criteria 1 Introduction to the course. Occupational health and safety induction. Magnetic properties of matter. Field theory, magnetic flux and magnetic flux density. Workbook tutorial. 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 3.1, 3.2, 3.3, 3.4 2 Electromagnetism. Magnetic field around a current carrying conductor. Magnetic field around a solenoid. Magnetomotive force and magnetic field strength. Force on current-carrying conductors in a magnetic field. Workbook tutorial. 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 3.1, 3.2, 3.3, 3.4 3 Magnetic circuits. Reluctance and permeability. Relative permeability. Magnetisation curves and hysteresis. Workbook tutorial. 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 3.1, 3.2, 3.3, 3.4 4 Composite magnetic circuits with an air gap. Fringing and leakage flux. Force between two magnetic surfaces. Workbook tutorial. 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 3.1, 3.2, 3.3, 3.4 5 Ampere’s circuital law. AC operation and hysteresis losses. Eddy currents and eddy current losses. Workbook tutorial. 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 3.1, 3.2, 3.3, 3.4 6 Electromagnetic induction. Faraday Law and Lenz’s law. Workbook tutorial. 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 3.1, 3.2, 3.3, 3.4 7 Inductor construction. Self and mutual inductance. Transient response in series RL circuits. Workbook tutorial. 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 3.1, 3.2, 3.3, 3.4 8 Transformer construction and operation. Equivalent circuit. Workbook tutorial. 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 3.1, 3.2, 3.3, 3.4 9 Transformer voltage regulation. Losses and efficiency. Workbook tutorial. 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 3.1, 3.2, 3.3, 3.4 10 Autotransformers. Transformer winding connections. Three-phase transformers. Workbook tutorial. 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 3.1, 3.2, 3.3, 3.4 11 DC machine operating principles. Generator construction. Generator and motor action. Commutation. Connections of self-excited machines. Workbook tutorial. 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 3.1, 3.2, 3.3, 3.4 12 Separately excited generators. Voltage regulation. Generator polarity. Workbook tutorial. 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 3.1, 3.2, 3.3, 3.4 13 Effects of load on a generator. Losses and efficiency. Workbook tutorial. 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 3.1, 3.2, 3.3, 3.4 14 DC motor operation. Motor torque. Current, speed and torque relationship. Speed control. Motor starting and braking. Workbook tutorial. 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 3.1, 3.2, 3.3, 3.4 15 Tachogenerators, Stepper motors, Servomotors. Workbook tutorial. 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 3.1, 3.2, 3.3, 3.4 16 Solving problems in electromagnetic circuits. Workbook tutorial. 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 3.1, 3.2, 3.3, 3.4 17-18 Closed-book test

Learning Resources

Prescribed Texts

References

 Boylestad, “Introductory circuit analysis” Tutorial and Laboratory Instruction sheets will be available online (using RMIT Online Learning Hub) and student’s local S drive.

Other Resources

Overview of Assessment

This course will be assessed through a range of practical exercises, assignments and progressive tests.

You are required to complete the following three assessment tasks:

1. Assignment 1 (25%) - Week 6
2. Assignment 2 (25%) - Week 15
3. Closed book Test (50%) - Week 17/18

All assessment tasks need to be successfully completed to demonstrate competence.
Percentages shown apply to post competence grading only.

CHD- Competent with High Distinction
CDI- Competent with Distinction
CC- Competent with Credit
NYC- Not Yet Competent
DNS- Did Not Submit for Assessment

Assessment Matrix

 Assessment task Element Assignment 1 1, 2, 3 Assignment 2 1, 2, 3 Closed-book test 1, 2, 3

Other Information

Study and learning Support:

Study and Learning Centre (SLC) provides free learning and academic development advice to you.
Services offered by SLC to support your numeracy and literacy skills are:

assignment writing, thesis writing and study skills advice
maths and science developmental support and advice
English language development

Disability Liaison Unit:

If you are suffering from long-term medical condition or disability, you should contact Disability Liaison Unit to seek advice and

Late submission:

If you require an Extension of Submittable Work (assignments, reports or project work etc.) for 7 calendar days or less (from the original due date) and have valid reasons, you must complete and
lodge an Application for Extension of Submittable Work (7 Calendar Days or less) form and lodge it with the Senior Educator/ Program Manager.
The application must be lodged no later than one working day before the official due date. You will be notified within
no more than 2 working days of the date of lodgment as to whether the extension has been granted.

If you seek an Extension of Submittable Work for more than 7 calendar days (from the original due date) must lodge an Application for Special
Consideration form under the provisions of the Special Consideration Policy, preferably prior to, but no later than 2 working days
after the official due date.

Submittable Work (assignments, reports or project work etc.) submitted late without approval of an extension will not be accepted or marked.

Special consideration: