Basic Electrical Course

Lesson 1 • Electrical Power and Energy

Introduces power as the rate of energy transfer and energy as cumulative work done. Links power formulas to real-world consumption and heat dissipation scenarios.

Lesson 2 • Ohm's Law and Basic Relationships

Derives and applies Ohm's Law to relate voltage, current, and resistance. Provides the primary calculation tool used in every subsequent circuit analysis chapter.

Lesson 3 • Atomic Structure and Electric Charge

Explains protons, electrons, and neutrons as the basis of charge. Establishes the atomic model as the foundation for all subsequent electrical concepts.

Lesson 4 • Voltage, Current, and Resistance

Defines the three primary electrical quantities and their units. Connects each quantity to observable physical phenomena students will measure throughout the course.

Lesson 1 • Measurement Uncertainty and Calibration

Quantifies uncertainty budgets and explains calibration traceability requirements. Ensures students can validate instrument reliability in professional settings.

Lesson 2 • Measurement Concepts and Units

Covers accuracy, precision, resolution, and measurement error types. Grounds all instrument use in metrological principles that ensure reliable data.

Lesson 3 • Oscilloscope Operation and Waveform Reading

Introduces oscilloscope controls to capture and interpret time-domain waveforms. Connects waveform parameters to the AC concepts introduced in the next chapter.

Lesson 4 • Using Multimeters Effectively

Trains correct multimeter setup for voltage, current, and resistance measurement. Prevents common wiring errors that damage instruments or produce false readings.

Lesson 1 • Kirchhoff's Voltage and Current Laws

Formalizes KVL and KCL as universal conservation laws for circuit analysis. Enables solution of circuits that cannot be simplified by reduction alone.

Lesson 2 • Series-Parallel Network Analysis

Combines series and parallel rules to solve multi-branch resistive networks. Prepares students for real-world circuits that mix both topologies.

Lesson 3 • Series Circuit Behaviour

Examines current, voltage, and resistance in series-connected components. Establishes series rules as the baseline for comparing more complex topologies.

Lesson 4 • Parallel Circuit Behaviour

Analyses voltage, current branching, and equivalent resistance in parallel networks. Contrasts parallel behaviour with series rules to build comparative understanding.

Lesson 1 • Capacitors in AC Circuits

Derives capacitive reactance and the 90-degree current-voltage phase relationship. Builds understanding of energy storage and reactive behaviour in AC systems.

Lesson 2 • Impedance and Phasor Analysis

Combines resistance and reactance into complex impedance using phasor notation. Enables AC circuit analysis using methods analogous to DC Ohm's Law.

Lesson 3 • Sinusoidal Waveform Characteristics

Defines amplitude, frequency, period, and phase of sinusoidal signals. Establishes the mathematical language used throughout AC circuit analysis.

Lesson 4 • Inductors in AC Circuits

Derives inductive reactance and the 90-degree voltage-current phase relationship. Complements capacitor analysis to complete the reactive component picture.

Lesson 1 • Low-Pass and High-Pass Filters

Designs RC and RL passive filters and plots their frequency response. Introduces cutoff frequency as the key design parameter for signal conditioning.

Lesson 2 • Bode Plots and Frequency Analysis

Constructs Bode magnitude and phase plots for first- and second-order systems. Provides a graphical tool for evaluating filter and amplifier frequency behaviour.

Lesson 3 • Parallel Resonance

Analyses tank circuits and high-impedance behaviour at parallel resonance. Contrasts parallel resonance characteristics with series resonance outcomes.

Lesson 4 • Series Resonance

Derives resonant frequency and impedance behaviour of series RLC circuits. Establishes resonance as the condition where reactive effects cancel each other.

Lesson 1 • Three-Phase Transformer Connections

Analyses delta and wye transformer connections for three-phase power systems. Extends single-phase transformer knowledge to industrial power distribution.

Lesson 2 • Electromagnetic Induction

Applies Faraday's and Lenz's Laws to predict induced voltage and current direction. Provides the theoretical basis for transformer and generator operation.

Lesson 3 • Magnetic Fields and Flux

Defines magnetic field intensity, flux density, and permeability of materials. Establishes the magnetic circuit concepts needed to analyse transformers and inductors.

Lesson 4 • Transformer Performance and Testing

Evaluates efficiency, voltage regulation, and equivalent circuit parameters. Prepares students to specify and test transformers in power distribution contexts.

Lesson 1 • DC Motor Speed Control

Examines armature voltage and field flux methods for DC motor speed regulation. Connects control theory to practical variable-speed drive applications.

Lesson 2 • DC Motor and Generator Principles

Derives torque and back-EMF relationships in DC machines using Lorentz force. Establishes DC machine theory as the conceptual entry point for all rotating machines.

Lesson 3 • Three-Phase Induction Motor Operation

Explains rotating magnetic field creation, slip, and torque in induction motors. Covers the most widely deployed motor type in industrial environments.

Lesson 4 • Synchronous Machines and Generators

Analyses synchronous speed, excitation, and power angle in synchronous machines. Connects generator theory to grid-connected power generation systems.

Lesson 1 • Overcurrent Protection Devices

Covers fuse and circuit breaker operation, ratings, and coordination principles. Ensures students can select protective devices appropriate to circuit requirements.

Lesson 2 • Lockout/Tagout and Safe Work Practices

Details energy isolation procedures and personal protective equipment requirements. Prepares students to work safely on de-energised and energised electrical systems.

Lesson 3 • Electrical Hazards and Human Body Effects

Quantifies the physiological effects of current magnitude and path through the body. Motivates all subsequent safety practices with evidence-based hazard data.

Lesson 4 • Grounding, Bonding, and Fault Protection

Explains system grounding, equipment bonding, and ground fault current paths. Establishes the protective infrastructure that limits shock and fire risk.