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Evidence Guide: MEM30025A - Analyse a simple electrical system circuit

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

MEM30025A - Analyse a simple electrical system circuit

What evidence can you provide to prove your understanding of each of the following citeria?

Establish function and purpose of selected circuit

  1. All relevant drawings, specifications, manuals and documentation are obtained and interpreted in accordance with workplace procedures.
  2. Circuit and component installation is observed where required to establish function and purpose.
  3. Safety procedures to be followed are determined in conjunction with supervisors and in accordance with legislative and regulatory requirements.
  4. Appropriate personnel are consulted with to establish job requirements.
All relevant drawings, specifications, manuals and documentation are obtained and interpreted in accordance with workplace procedures.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Circuit and component installation is observed where required to establish function and purpose.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Safety procedures to be followed are determined in conjunction with supervisors and in accordance with legislative and regulatory requirements.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Appropriate personnel are consulted with to establish job requirements.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Extract a circuit diagram from existing drawings and documentation

  1. Appropriate components and assemblies are identified.
  2. Where required, components and/or materials are identified from supplier/manufacturer catalogues.
  3. Circuit diagram is extracted.
  4. Drawing conventions and symbols are used in the diagram in accordance with codes and workplace procedures.
Appropriate components and assemblies are identified.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Where required, components and/or materials are identified from supplier/manufacturer catalogues.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Circuit diagram is extracted.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Drawing conventions and symbols are used in the diagram in accordance with codes and workplace procedures.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Analyse the circuit for electrical characteristics

  1. Functions of the circuit and components are compared against design characteristics and operational specifications.
Functions of the circuit and components are compared against design characteristics and operational specifications.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment

A person who demonstrates competency in this unit must be able to analyse the functions and components of a simple electrical system circuit. Competency in this unit cannot be claimed until all prerequisites have been satisfied.

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Assessors must be satisfied that the candidate can competently and consistently perform all elements of the unit as specified by the criteria, including required knowledge, and be capable of applying the competency in new and different situations and contexts.

Context of and specific resources for assessment

This unit may be assessed on the job, off the job or a combination of both. Where assessment occurs off the job, i.e. the candidate is not in productive work, an appropriate simulation must be used where the range of conditions reflects realistic workplace situations. The competencies covered would be demonstrated by an individual working alone or as part of a team. The assessment environment should not disadvantage the candidate.

This unit could be assessed in conjunction with any other units addressing the safety, quality, communication, materials handling, recording and reporting associated with analysing a simple electrical system circuit or other units requiring the exercise of the skills and knowledge covered by this unit.

Method of assessment

Assessors should gather a range of evidence that is valid, sufficient, current and authentic. Evidence can be gathered through a variety of ways including direct observation, supervisor's reports, project work, samples and questioning. Questioning techniques should not require language, literacy and numeracy skills beyond those required in this unit of competency. The candidate must have access to all tools, equipment, materials and documentation required. The candidate must be permitted to refer to any relevant workplace procedures, product and manufacturing specifications, codes, standards, manuals and reference materials.

Guidance information for assessment

Required Skills and Knowledge

Required skills

Look for evidence that confirms skills in:

calculating

reading and interpreting specifications and drawings

drawing to scale

analysing

planning and sequencing operations

checking and clarifying task-related information

checking for conformance to specifications

Required knowledge

Look for evidence that confirms knowledge of:

safe work practices and procedures

hazard and control measures associated with analysing the function of a simple electrical system circuit

dangers and safety precautions:

electrical hazards

earthing and insulation

The function of the following components:

resistors:

fixed (composition and wire wound)

variable (rheostats, potentiometers and trimmers)

non-linear (thermistors)

capacitors:

fixed (ceramic, plastic and electrolytic)

variable

magnetic

transformers (AF, RF and power)

chokes

relays

contactors

rectifiers

smoothing filters

voltage regulators and feedback

basic physics:

conductors

insulators

semiconductors

current flow

voltage

resistance

colour code

power rating

Ohm's Law

electrical units

power in electrical circuits

protection methods:

fuses

circuit breaking

safety interlocks

earthing - personnel safety

a.c. circuits:

series and parallel a.c. circuits

power in a.c. circuits

power supplies:

transformers

rectifiers

smoothing filters

voltage regulators and feedback

function and operation of a simple low voltage d.c. power supply

function and operation of the transformer in a simple low voltage d.c. power supply, including the significance of the turns ratio

function in a simple low voltage d.c. power supply of rectifiers including the significance of the diode characteristics, for both half and full wave types

operation of smoothing filters in a simple low voltage d.c. power supply

operation of simple zener diode type voltage regulators in a simple low voltage d.c. power supply

feedback

Range Statement

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Components and assemblies

Can include:

resistors - fixed (composition and wire wound), variable (rheostats, potentiometers and trimmers), non-linear (thermistors)

capacitors - fixed (ceramic, plastic and electrolytic), variable, magnetic, transformers (AF, RF and power), chokes, relays, contactors, rectifiers, smoothing filters, voltage regulators and feedback