Course Title: Solve problems in extra-low voltage single path circuits

Part B: Course Detail

Teaching Period: Term2 2009

Course Code: EEET6775C

Course Title: Solve problems in extra-low voltage single path circuits

School: 130T Vocational Engineering

Campus: City Campus

Program: C2169 - Certificate II in Electrotechnology Studies (Pre-vocational)

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

gail.fiander@rmit.edu.au

ext. 54509

Nominal Hours: 40

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

Nil

Course Description

This unit covers providing known solutions to predictable problems in single path circuits operated at extra-low voltage as they apply to various electrotechnology work functions. It encompasses working safely, problem solving procedures, including the use of basic voltage, current and resistance measuring devices, providing known solutions to predictable circuit problems


National Codes, Titles, Elements and Performance Criteria

National Element Code & Title:

UEENEEE003B Solve problems in extra-low voltage single path circuits

Element:

• Prepare to work on extra-low voltage single path electrical circuits.
• Solve problem in extra-low voltage single path electrical circuits.
• Complete work and document problem solving activities.

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 identified and accessed 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.

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 routines are used to solve circuit problems using measured and calculated values as they apply to single path, single source circuits.
2.5 Problems are solved without damage to apparatus, circuits, the surrounding environment or services and using sustainable energy practices.
2.7 Apparatus is dismantled and assembled efficiently without waste of materials and energy and/or damage to apparatus and the surrounding environment or services.
2.8 Procedures for referring non-routine events to immediate supervisor for directions are followed.
2.9 Routine quality checks are carried out in accordance with work instructions.
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 appropriate person(s) notified in accordance with established routine procedures.



Learning Outcomes


Refer to elements
 


Details of Learning Activities

2.8.1.2 Fundamental electrical principles
Evidence shall show an understanding of electrical principles to an extent indicated by the
following aspects:
a) Fundamental and derived units encompassing:
• basic units of measurement.
• SI derived units for force, pressure, energy/work temperature and power.
• conversion of units to multiple and submultiple units.
• transposition of a given equation for any variable in the equation.
• value of electrical and related mechanical quantities given in any combination of
units, multiple units or submultiple units.
b) Power, work and energy encompassing:
• relationship between power, work and energy.
• input, output, efficiency or losses of electrical systems and machines in terms of
units / multiple units of power.
• effect of losses in electrical wiring and machines.
c) Electrical characteristics of materials encompassing:
• characteristics of solid conductors, electrolytes, insulators and semi-conductors.
• mechanisms of electrical conduction in solids, liquids and gases.
• The terms “electric charge”, “electric current” and “electromotive force.”
d) The simple circuit encompassing:
• symbols used to represent an electrical energy source, a load, a switch and a circuit
protection device in circuit diagram.
• purpose of each component in the circuit.
• effects of an open-circuit, a closed-circuit and a short-circuit.
e) Resistance encompassing:
• relationship between voltage and current from measured values in a simple circuit.
• Value of voltage, current and resistance in a circuit given any two of these quantities.
• power dissipated in a circuit from voltage, current and resistance values.
• relationship between voltage, current and resistance and the power dissipated in a circuit.
f) Effects of current encompassing:
• physiological effects of current.
• the fundamental principles (listed in AS/NZS 3000) for protection against the physiological effects of current.
• basic principles by which electric current can result in the production of heat; the production of light; the production of magnetic fields; a chemical reaction.
• typical uses of the effects of current.
• mechanisms by which metals corrode.
• The fundamental principles (listed in AS/NZS 3000) for protection against the damaging effects of current.
g) Sources of electrical energy – conversion of other forms to electrical energy encompassing:
• basic principles which electricity is produced from a chemical reaction (primary
cells, secondary cells and fuel cells); produced from a magnetic field coupled with motion; produced from light; produced from heat; produced from force.
• single emf source equivalent circuit.
h) Using measuring instruments encompassing:
• safe working procedures when working with instruments.
• handling and storage of instruments to ensure they are protected from damaged.
• selection of an instrument to measure voltage, current or resistance.
• connection of instruments into a circuit to measure voltage, current and resistance
• reading analogue scales and digital readouts in measuring voltage, current and resistance.

2.18.1 Occupational Health and Safety principles
Evidence shall show an understanding of Occupational Health and Safety to an extent indicated by the following aspects
a) The basic legal requirements covering occupational health and safety in the workplace encompassing:
• general aims and objectives of the relevant state or territory legislation relating to OHS.;
• employer and employee responsibilities, rights and obligations
• major functions of safety committees and representatives); and
• powers give to Occupational Health and Safety Inspectors.
b) The requirements for personal safety in the workplace encompassing:
• the safety precautions that are required to ensure personal safety in the workplace
• potential hazards in relation to improper industrial housekeeping; and
• sources of pollution in an engineering environment and outline control measures
c) Workplace safety check, identifying potential workplace hazards and suggested measures for accident prevention encompassing:
• safety checklist for a typical workplace environment,
• identifying and reporting potential workplace hazards
• methods of prevention of safety hazards within a typical workplace environment
d) working safely with electrical tools or equipment encompassing:
• causes of electrical accidents and state the effects that electric shock can cause.);
• purpose of circuit protection devices, such as fuses, circuit breakers and Residual Current Devices (RCDs), and
• safe isolation of an electrical supply.
e) emergency procedures for the rescue of an electric shock victim equipment
f) emergency first aid for an electric shock victim
Note:
Emergency first aid is limited to first-on-the scene assistance to a victim of electric shock , and basics of CPR.


Classroom tutorial activities: to consolidate the concepts of voltage current and resistance. This includes calculations for voltage, current, resistance, efficiency and power calculation.

Following topics will be covered: resistance in a single path basic circuit, circuit protection, producing an emf, effects of current, digital and analog meters, units of measurement, engineering notation.

Practical exercises: to demonstrate an understanding topics related Ohm’s Law

Work simulated activities: to apply an electrical formula to a real work situation


It is expected that students would 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

SessionTopicAssessment Task
1Explain the physical and electrical characteristics of materials 
2Lab.1: Resistor Colour codesDocument a scenario to demonstrate the ability to correctly identify resistor values using a colour code chart
3Engineering notion supporting maths 
4 Document scenario to implement and validate the rules of maths in a real work place activitiy
5Power 
6Ohm’s Law 
7Crt Protection and testing devices 
8 Document scenario to implement and validate the rules of Ohm’s Law in a simple single path circuit
9Revision 
10Exam 


Learning Resources

Prescribed Texts

Student workbook


References

Electrical Trade Principles: Jeffery Hampson


Other Resources


Overview of Assessment

Assessment will incorporate a variety of methods including written,oral, practical tasks and activities.
You will be asked to personally demonstrate to your teacher/assessor the practical skills gained during this course to the relevant industry standards. Assessment activities will occur throughout this course and feedback will be provided at regular intervals.


Assessment Tasks

This course is part of the Workshop Practice cluster. The assessment tasks include:
Task 1 (Documentation of Scenario): 10%
Document a scenario to demonstrate the ability to correctly identify resistor values using a colour code chart

Task 2 (Documentation of Scenario): 20%
Document scenario to implement and validate the rules of Ohm’s Law in a simple single path circuit

Task 3 (Documentation of Scenario): 10%
Document scenario to implement and validate the rules of maths in a real work place activitiy

Task 4 (Written Exam) : 60%
Written exam to demonstrate the understanding all the elements named in the EKAS 2.8.1.2 and 2.18.1


Assessment Matrix

Course Overview: Access Course Overview