Electrical Engineering Course

Lesson 1 • Capacitors and Inductors in DC Circuits

Explains energy storage in capacitive and inductive elements under DC transient conditions. Prepares students for AC circuit analysis in later chapters.

Lesson 2 • Electrical Quantities and Units

Introduces voltage, electric current, electrical resistance, and power with SI units. Establishes the measurement language used throughout the entire course.

Lesson 3 • Series and Parallel Circuit Analysis

Teaches equivalent electrical resistance calculation for series, parallel, and mixed networks. Enables students to simplify complex resistive circuits systematically.

Lesson 4 • Kirchhoff's Laws and Network Theorems

Applies KVL and KCL to multi-loop circuits and introduces superposition and Thevenin equivalents. Provides tools for analysing any linear DC network.

Lesson 1 • Impedance of R, L, and C Elements

Calculates inductive and capacitive reactance and total impedance. Connects component behaviour to frequency-dependent circuit response.

Lesson 2 • Resonance in AC Circuits

Analyses series and parallel resonance conditions and quality factor. Demonstrates frequency selectivity critical for filter and tuning applications.

Lesson 3 • AC Power Analysis

Distinguishes real, reactive, and apparent power and defines power factor. Enables accurate power budgeting and efficiency assessment in AC systems.

Lesson 4 • AC Waveform Characteristics

Defines sinusoidal waveforms by amplitude, frequency, period, and electrical phase. Establishes the mathematical basis for all AC circuit analysis.

Lesson 1 • Power Factor Correction

Applies capacitor banks to improve power factor in three-phase systems. Reduces reactive power demand and improves distribution efficiency.

Lesson 2 • Unbalanced Three-Phase Loads

Analyses unbalanced star and delta loads using mesh and nodal methods. Prepares students for real-world installations where loads are rarely equal.

Lesson 3 • Three-Phase Power Calculations

Calculates real, reactive, and apparent power for balanced three-phase loads. Provides the quantitative tools needed for industrial load assessment.

Lesson 4 • Three-Phase Generation Principles

Explains how three-phase EMF is generated and the phase sequence concept. Establishes why three-phase systems dominate industrial power distribution.

Lesson 1 • Transformer Construction and Principles

Covers core materials, winding arrangements, and the mutual induction principle. Links physical construction to the transformer's voltage and electric current transformation ratios.

Lesson 2 • Three-Phase Transformer Connections

Analyses delta-delta, star-star, delta-star, and star-delta configurations and phase shifts. Prepares students for specifying transformers in three-phase distribution networks.

Lesson 3 • Transformer Testing and Parameters

Performs open-circuit and short-circuit tests to extract equivalent circuit parameters. Provides the data needed for efficiency and regulation calculations.

Lesson 4 • Voltage Regulation and Efficiency

Calculates voltage regulation and efficiency at various loads and power factors. Enables performance comparison and optimal loading decisions.

Lesson 1 • DC Motor Principles and Torque

Derives the torque equation and explains back-EMF in DC motors. Connects electrical input to mechanical output through the motor's operating equations.

Lesson 2 • DC Generator Characteristics

Analyzes separately excited, shunt, series, and compound generator configurations. Evaluates voltage regulation and load characteristics for each excitation type.

Lesson 3 • DC Motor Speed Control Methods

Covers armature voltage, field weakening, and electrical resistance insertion for speed control. Enables selection of the appropriate control method for a given drive requirement.

Lesson 4 • DC Machine Losses and Efficiency

Identifies copper, iron, mechanical, and stray losses in DC machines. Calculates overall efficiency and identifies strategies to minimize losses.

Lesson 1 • Induction Motor Starting and Speed Control

Evaluates direct-on-line, star-delta, and autotransformer starting methods. Covers variable frequency drive control for energy-efficient speed regulation.

Lesson 2 • Induction Motor Construction and Slip

Describes squirrel-cage and wound-rotor construction and defines slip. Links rotor speed to slip and explains induced rotor EMF and frequency.

Lesson 3 • Induction Motor Equivalent Circuit

Develops the per-phase equivalent circuit and derives torque and power expressions. Enables quantitative performance prediction across the full speed range.

Lesson 4 • Synchronous Machines: Motors and Generators

Analyzes synchronous generator and motor operation using phasor diagrams. Covers excitation control, power angle, and synchronous machine stability.

Lesson 1 • Earthing Systems and Protective Bonding

Explains TN, TT, and IT earthing arrangements and bonding requirements. Ensures fault current paths are established for safe disconnection of supply.

Lesson 2 • Circuit Protection Devices

Covers fuses, miniature circuit breakers, and residual current devices for overcurrent and fault protection. Links device ratings to cable and load protection requirements.

Lesson 3 • Wiring Systems and Cable Types

Surveys conduit, trunking, cable tray, and direct-burial wiring methods. Matches installation method to environmental and mechanical protection requirements.

Lesson 4 • Installation Testing and Verification

Performs insulation resistance, continuity, loop impedance, and RCD tests. Confirms that completed installations meet safety performance requirements before energization.

Lesson 1 • Rectifier Circuits and DC Supplies

Analyzes half-wave, full-wave, and three-phase controlled rectifiers. Calculates output voltage, ripple, and the effect of firing angle on DC output.

Lesson 2 • Variable Frequency Drives in Practice

Integrates rectifier, DC link, and inverter stages into a complete VFD system. Covers motor protection, braking methods, and drive commissioning procedures.

Lesson 3 • DC-DC Converters

Analyzes buck, boost, and buck-boost converter topologies in continuous conduction mode. Derives voltage conversion ratios and inductor current waveforms.

Lesson 4 • Inverters and PWM Techniques

Explains single-phase and three-phase voltage source inverters with PWM control. Connects inverter output quality to switching frequency and modulation index.