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All Systems Operational

Electronics syllabus for WAEC WASSCE | Learn | Learn by Rightal

WAEC WASSCE course

Electronics

WAEC WASSCE

105 topics sit in this course for WAEC WASSCE.

Practice Electronics All subjects

Learn/WAEC WASSCE/Syllabus/Electronics

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Topics with a public outline

Oscillators - Positive vs. Negative Feedback
Difference between positive feedback (oscillator) and negative feedback (amplifier).
Concepts of Measuring Instrument
Qualitative treatment only which should include: Classification – analogue and digital.
Types of Electron Emission
Qualitative treatment should include: Thermionic emission; photoemission; secondary emission and field emission.
Electromagnetic Field
Trace magnetic lines of force in a current-carrying conductor; Lenz's and Faraday's laws.
Control System - Qualitative Treatment
Types of control circuits (open and closed loop); principle of operation of open loop and closed loop.
Control System - Servo Mechanism

Qualitative treatment only including meaning, principle of operation, types, uses and application e.g. in car, doors, booths etc.

Principles of Radio Waves

Relationship between velocity, frequency, wavelength; meaning of radio communication; modulation and demodulation; advantages of F.M. over A.M.; phase modulation (mention only).

Self and Mutual Induction

Definitions only; calculations involving energy stored in a coil; applications of electromagnetism including electric bell, solenoid, loudspeaker, buzzer, moving-coil instrument, moving-iron instrument, earphone and microphone.

Rectification - Types of Voltage Regulator

e.g. diac, triac, thyristor, series voltage regulator, transistorized electronic voltage regulator.

Stages of Radio Receiver

Types of radio receivers; advantages of superheterodyne over direct input receiver.

Fault Detection in Radio Receiver

Use faulty radio to detect and repair fault; project work on construction and designing of a simple radio receiver.

Power Amplifiers - Classification

Class A, Class B, Class AB, Class C, application, power gain, methods of biasing and efficiency.

Transmitters and Receivers

Block diagrams of A.M. and F.M. transmitters, A.M. and F.M. superheterodyne radio receivers, mono and colour T.V. chrome receivers; functions of each block and direction of signal flow; qualitative treatment of T.V. standard (NTSC, PAL, SECAM, BIG).

Methods of Communication

Fibre optics, microwave, satellite, cellular phone, digital communication network, etc.

Digital Basics - Number System

Different number systems (binary, octal, hexadecimal), simple calculations in binary, conversions between bases, addition and subtraction of binary numbers.

Semiconductor Diodes - Biasing of Diodes

Practical demonstration of I-V characteristics of P-N junction diode in the forward and reverse bias modes.

Digital Basics - Logic Gates (Combinational)

Qualitative treatments of AND, OR, NOT, NOR and NAND; includes logic gates using switching arrangements, truth table and Boolean expression.

Transducers and Sensors - Types and Uses

Includes acoustic, dynamic electrostatic, electromagnetic, capacitive, pressure sensor, photoelectric, proximity sensor etc. Also, thermistor as a temperature sensing device.

Transducers and Sensors - Acoustic Transducer

Qualitative treatments only; types include loudspeaker, microphone, earphone; principles of operation, function, and application.

Electric Circuit - Circuit Arrangement

Series, parallel, series-parallel; includes practical wiring of different circuit arrangement.

AC Circuits - R-L-C Circuits

Qualitative and quantitative treatments including concepts of capacitive reactance, inductive reactance, impedance, RL and RC circuits, calculations of capacitive reactance (Xc) and inductive reactance (XL), and resonance frequency.