AC Course

Lesson 1 • Safety and Electrical Standards

Defines safe working practices and regulatory compliance for AC systems. Ensures students operate within professional safety frameworks.

Lesson 2 • Alternating Current Fundamentals

Covers sine wave characteristics, frequency, amplitude, and phase. Builds the conceptual base for all subsequent AC analysis.

Lesson 3 • Voltage and Current Relationships

Examines how voltage and current behave in AC circuits. Connects waveform theory to measurable electrical quantities.

Lesson 1 • Series and Parallel AC Circuits

Applies impedance concepts to series and parallel configurations. Students calculate total impedance and branch currents systematically.

Lesson 2 • Frequency Response Basics

Introduces how circuit behaviour changes across frequency ranges. Sets foundation for filter design and resonance topics ahead.

Lesson 3 • Impedance and Reactance

Defines inductive and capacitive reactance and combines them into impedance. Provides the analytical tool for all AC load calculations.

Lesson 4 • Kirchhoff's Laws in AC Circuits

Extends KVL and KCL to phasor domain for complex circuit solving. Bridges DC analysis knowledge to AC multi-loop problems.

Lesson 1 • Real and Reactive Power

Distinguishes energy-consuming real power from reactive power in storage elements. Establishes the power triangle as a core analytical tool.

Lesson 2 • Power Measurement Methods

Covers wattmeter, two-wattmeter, and power analyser techniques. Equips students to verify power calculations with physical instruments.

Lesson 3 • Apparent Power and Power Factor

Defines apparent power as the vector sum and introduces power factor ratio. Connects power factor to system efficiency and equipment sizing.

Lesson 4 • Three-Phase Power Systems

Introduces balanced three-phase configurations and their power advantages. Prepares students for industrial and commercial power analysis.

Lesson 1 • Parallel Resonance

Examines tank circuit behaviour and high-impedance resonance characteristics. Contrasts parallel with series resonance for design selection.

Lesson 2 • Filter Performance Evaluation

Applies Bode plots and transfer functions to assess filter behaviour. Connects theoretical design to measurable real-world performance.

Lesson 3 • Passive Filter Design

Covers low-pass, high-pass, band-pass, and band-stop passive filters. Students select and size components for target frequency responses.

Lesson 1 • Transformer Equivalent Circuit

Models core losses, leakage inductance, and winding resistance realistically. Students use the model to predict efficiency and regulation.

Lesson 2 • Transformer Applications

Surveys step-up, step-down, isolation, and autotransformer configurations. Connects transformer types to specific industrial and electronic uses.

Lesson 3 • Magnetic Circuit Principles

Defines flux, magnetomotive force, and reluctance in magnetic circuits. Provides the physical basis for transformer and inductor operation.

Lesson 4 • Transformer Testing and Ratings

Covers open-circuit and short-circuit tests to determine transformer parameters. Students interpret nameplate data and calculate regulation.

Lesson 1 • Induction Motor Principles

Explains rotating magnetic field, slip, and torque production in induction motors. Builds understanding of the most common industrial AC machine.

Lesson 2 • Induction Motor Performance

Calculates efficiency, power factor, and starting torque from equivalent circuit. Students predict motor behaviour under varying load conditions.

Lesson 3 • Motor Protection and Maintenance

Covers thermal, overcurrent, and insulation protection for AC motors. Ensures students can specify protection devices and maintenance schedules.

Lesson 4 • Variable Frequency Drives

Introduces VFD topology, V/Hz control, and vector control strategies. Students match drive type to application speed and torque requirements.

Lesson 1 • Distribution System Architecture

Maps radial, ring, and mesh distribution topologies and their trade-offs. Provides context for protection and reliability design decisions.

Lesson 2 • Earthing System Design

Defines system earthing, equipment earthing, and bonding requirements. Students design earthing schemes that limit fault voltages.

Lesson 3 • Fault Analysis Fundamentals

Introduces symmetrical and asymmetrical fault calculations using per-unit method. Enables students to size protective equipment correctly.

Lesson 4 • Overcurrent Protection Devices

Covers fuses, circuit breakers, and coordination principles for fault isolation. Students select and coordinate devices for selective protection.

Lesson 1 • Simulation and Modelling Tools

Uses circuit simulation software to validate AC system designs before implementation. Bridges analytical calculations with software-based verification.

Lesson 2 • Design Review and Documentation

Covers single-line diagrams, design reports, and peer review processes. Ensures students produce complete, professional deliverables.

Lesson 3 • Load Analysis and Demand Estimation

Applies demand factors, diversity factors, and load growth projections. Students size systems accurately for present and future loads.

Lesson 4 • System Efficiency Optimisation

Evaluates conductor sizing, transformer efficiency, and loss minimisation strategies. Students reduce system losses while meeting reliability targets.