SHS3 Applied Technology · Semester 2 Week 12: Electrical Systems Design

Lesson notes

Learning Objectives

Indicator: 3.5.1.LI.9 - Classify home appliances under resistive and inductive loads and outline faults associated with them

By the end of the lesson, learners can:

Define resistive load and inductive load in their own words with at least two examples of each.
Classify at least eight common home appliances correctly as either resistive or inductive loads.
Explain the four common faults (open-circuit, short-circuit, ground fault, and faulty accessories) and describe how each one affects the operation of an appliance.
Diagnose a given faulty appliance scenario by identifying the likely fault type and suggesting an appropriate remedy.
Work cooperatively in groups to present findings on appliance classification and faults, respecting the contributions of all members.

Sign in with your phone number to read the full note and download the GES plan - free.

Sign in with phone number

Curriculum details

Strand: Electrical and Electronic Technology (Strand 5)
Sub-strand: Electrical Systems Design (5.1)
Content standard: 3.5.1.CS.1 - 3.5.1.CS.1 Apply knowledge and understanding of electrical Machines 3.5.1.LO.1 Demonstrate knowledge and understanding of electrical Machines and appliances and apply the knowledge in servicing electrical appliances and circuits
Indicator: 3.5.1.LI.9 - Classify home appliances under resistive and inductive loads and outline faults associated with them
Suggested placement: Semester 2, Week 12 (Week 32 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Source document note: The official curriculum document has a fault in this entry, so the curriculum text above is transcribed exactly as printed:

content standard text - p.184: prints the content-standard code as "2.4.1.CS.1"; filed under the section's own 3.5.1.CS.1
content standard text - p.184: prints the learning-outcome code as "2.4.1.LO.1"; filed under the section's own 3.5.1.LO.1
content standard text - p.184: the front page prints "Strand 4." for Electrical and Electronic Technology inside the YEAR THREE section, where Year 3's strand 4 is Wood Technology (printed pp.164 and 170); the Contents page (printed p.6) prints "STRAND 5. ELECTRICAL AND ELECTRONIC TECHNOLOGY" for Year 3 and Year 2 numbers the same strand 5, so the row is filed under strand 5
indicator text - p.184: prints the learning-indicator code as "2.4.1.LI.9"; filed under the section's own 3.5.1.LI.9
exemplars - p.184: prints the assessment code as "2.4.1.AS.9"; filed under the section's own 3.5.1.AS.9
Curriculum reference: NaCCA curriculum document, p. 184

Exemplars (from the NaCCA curriculum)

Focal Area: classification of elelctrical appliances and common faults associated with them
1. Resistive Loads
2. Inductive Loads Common faults 1.Open-circuit fault
2. short-circuit fault
3. Ground fault
4. faulty accessories
Pedagogy: Talk for Learning/ Collaboration Through a whole class discussion, guide learners to discuss: Examples of electrical appliances eg: Electric iron, cooker, heater, Blender, fan Group electrical appliances under resistive and inductive loads resistive loads e.g. heater, kettle, microwave, pressing iron etc, Inductive Loads e.g. blender, fans, drill machines, washing machines, etc. Come out with common faults associated with them

Assessment (3.5.1.AS.9). The document marks these depth-of-knowledge levels for this indicator: Level 1 Recall; Level 2 Skills of conceptual understanding; Level 3 Strategic reasoning; Level 4 Extended critical thinking and reasoning.