AUTO ELECTRICAL WORK

WAEC SYLLABUS ON AUTO ELECTRICAL WORK

PREAMBLE:

This examination syllabus has been evolved from the Senior Secondary School Trade Curriculum. The examination syllabus does not replace the curriculum. The syllabus has been arranged to subsume six themes: battery, starting, ignition, charging, lighting and auxiliary systems.

OBJECTIVES:

The objective of the syllabus is to test candidates’ knowledge, skills and attitude in the field of Auto Electrical Works. Specifically, candidates are to:
(i) understand the concepts in auto electrical works;
(ii) use tools and equipment to carry out maintenance and repair on motor vehicles;
(iii) understand the safety practices and observe them in the work environment.

EXAMINATION SCHEME


There will be three papers, Papers 1, 2 and 3, all of which are to be taken. Papers 1 and 2 shall be a composite paper to be taken at one sitting.

PAPER 1:

will consist of forty multiple-choice objective questions all of which are to be answered in 45 minutes for 40 marks.

PAPER 2:

will consist of six short-structured questions. Candidates will be required to answer any four in 1 hour for 60 marks.

PAPER 3:

will be a practical test of 2 hours duration. It will consist of three skill-based questions out of which candidates will answer two for 90 marks.
A list of materials for the test shall be made available to schools not less than two weeks before the paper is taken for materials procurement and relevant preparations.

Alternative to Practical Test:

Alternatively, in the event that materials for the actual practical test cannot be acquired, the Council may consider testing theoretically, candidates’ level of acquisition of the practical skills prescribed in the syllabus. For this alternative test, there will be two compulsory essay questions to be answered in 2 hours for 100 marks.

Industrial Attachment

This should be done by the candidates during the long vacation between their SS II and SS III course. It will be supervised and assessed by their subject teachers. It will carry 10 marks.


DETAILED SYLLABUS

TOPICCONTENTSNOTES

1. BATTERY

1.1 Concept of batteryDefinition, distinction between motor vehicle battery and other batteries
1.2 Uses of batteryTreatment should include vehicle battery assembly and as power source in soldering
1.3 Types, Constructional details and ratingsLead-acid and Nickel-alkaline types
1.4 ChargingSafety rules
Electrolyte preparation
Battery cleaning and connection
Charging mode
State of charge
Treatment should include electrolyte testing
1.5 Testing and MaintenanceSpecific gravity test of electrolyte
Cell voltage and polarity tests
Tools and equipment
Treatment should include electrolyte topping
up, hydrometer reading and interpretation
over-charging symptoms and idle-battery safekeeping hint

2. STARTING SYSTEM

2.1 Purpose and components of starting systemTreatment should include battery, flywheel,
starter
motor, switch and solenoid
2.2 Circuit diagramDrawing and reading of circuit diagram Treatment should include the location of the components and their sequential arrangement in a vehicle.
2.3 Types of starter motorAxial and Inertia.
2.4 Repair of starter motorsTreatment should include pinion engagements
Dismantling and assembling
Bushing and brush replacement
Commutator soldering/repair
Trouble shooting and rectification
Treatment should include armature servicing, diagnosis and repairs/restoration

3. IGNITION SYSTEM

3.1 Purpose and components of ignition systemIgnition system assembly
Treatment should include circuit cables, ignition switch, battery, coil, distributor, capacitor, high tension leads and sparking plugs
3.2 Circuit diagramDrawing and reading of circuit diagram
3.3 Construction and operation of ignition coilTreatment should include line diagram and conventional symbols
3.4 Types of Ignition SystemCircuit diagram
Treatment should include the internal construction of the coil
3.5 TimingConventional contact breaker and electronic ignition systems
3.6 Faults and repairsConcept and timing faults such as retarded ignition and over-advanced ignition.

4. CHARGING SYSTEM

Charging SystemHard starting
Jerking
Back firing etc.
Emphasize the use of multimeter, scanner, test lamps etc.
4.1 Purpose and components of charging systemCharging system assembly as a sub-system in a motor vehicle
Treatment should include switch, battery, cables,
4.2 Alternatoralternators, voltage regulators.
Constructional details
Conversion of a.c. to d.c.(rectification)
Function of each part of an alternator

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4.3 Circuit diagramDrawing and reading of circuit diagram
Treatment should include graphical and pictorial representation, need for diagrammatic representation and how to remove and fix the charging system units
4.4 Faults and repairsBrush and Bearing replacement
Diode testing, repair and replacement Treatment should include bearing seizure, charging failure etc.

5. LIGHTING SYSTEM

5.1 Purpose and classification of lighting in a motor vehicle Obligatory and non-obligatory lights
5.2 Head lampsTypes
Features
Setting of head lamps
5.3 Circuit diagramClassification, drawing and reading of circuit diagram
5.3 Circuit diagramTrouble shooting
5.4 Maintenance and repairsTreatment should include tools, equipment and procedures for repairing faults such as broken headlamp lens, bulb failure, non-aligned headlamps, open and short circuits etc.

6. AUXILIARY SYSTEM

TransformerTransformer construction
6.1 Concept and components of auxiliary systemDefinition, uses and units Treatment should include needs for auxiliary system
6.2 Constructional details and operation of auxiliary system componentTreatment should include water temperature gauge, oil pressure gauge, fuel gauge, horn relay, wiper switch, screen watcher pump, indicator and door switch
6.3 Maintenance and repairs of auxiliary ComponentsTroubleshooting
Treatment should include tools and equipment and Procedures for repairs of faults such as the failure of horn, screen wiper, oil pressure gauge, fuel gauge etc.

LIST OF FACILITIES AND MAJOR EQUIPMENT/MATERIALS REQUIRED:

(1) Motor batteries
(2) Battery head moulder set
(3) A complete tool box
(4) Polythene hand gloves sets
(5) Ammeter, voltmeter, multimeter
(6) High rate discharge tester
(7) Spanners, hand drilling machine
(8) Vice
(9) Bench/Table
(10) Wire brush, bearing extractor, pulley extractor
(11) Feeler gauge, soldering iron and lead
(12) Emery cloth, wooden file, aprons
(13) Jumper cable, magnetic pick-up
(14) Googles, plastic trays
(15) Hydrometer
(16) Tester (Screw driver type)
(17) Battery charger, testing lamp, cable stripper, insulation tape

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