1. DC Circuits:
This chapter covers fundamental aspects of DC circuits. It introduces electrical circuit elements such as resistors (R), inductors (L), and capacitors (C), along with voltage and current sources. The analysis of simple circuits under DC excitation is explored, utilizing Kirchoff’s current and voltage laws.
Students will learn about powerful circuit analysis techniques like Superposition, Thevenin, and Norton Theorems, which simplify complex circuits into more manageable equivalents. Furthermore, the chapter delves into the time-domain analysis of first-order RL and RC circuits, providing a solid foundation for understanding circuit dynamics.
2. AC Circuits:
In this module, the focus shifts to AC circuits. Students will become familiar with the representation of sinusoidal waveforms and the concepts of peak and RMS values. The chapter introduces Phasor representation of AC quantities, enabling easier analysis of AC circuits.
Various power aspects in AC circuits, such as real power, reactive power, apparent power, and power factor, are discussed in detail. The analysis of single-phase AC circuits containing components like resistors (R), inductors (L), capacitors (C), as well as their combinations in series and parallel (RL, RC, RLC), is thoroughly covered. Special attention is given to series and parallel resonance phenomena.
Additionally, the module includes the study of three-phase balanced circuits, exploring voltage and current relationships in both star and delta connections. Moreover, power measurement techniques in three-phase circuits are addressed.
3. Transformers:
This chapter centers around transformers, vital devices in electrical engineering. Students will learn about magnetic materials and their BH characteristics, setting the stage for understanding transformer operation.
The construction and working principles of single-phase and three-phase transformers are explained in-depth, covering their essential functionalities. Concepts of ideal and practical transformers are presented, highlighting their significance in practical applications. The module also introduces auto-transformers and explores their applications in various electrical systems.
4. Electrical Machines:
This module delves into electrical machines, crucial for power generation and utilization. Students will gain insight into the generation of rotating magnetic fields, a fundamental concept behind the operation of several electrical machines.
The construction and working of important machines are extensively covered, including three-phase induction motors, single-phase induction motors, separately excited DC motors, and synchronous generators. By studying these machines, students will develop a strong understanding of their applications and functionalities.
5. Electrical Installations:
This chapter deals with electrical installations and the components involved. It covers essential components of low-tension (LT) switchgear, including the Switch Fuse Unit (SFU), Miniature Circuit Breaker (MCB), Earth Leakage Circuit Breaker (ELCB), and Moulded Case Circuit Breaker (MCCB).
The module also explores different types of wires and cables commonly used in electrical installations. It emphasizes the importance of proper earthing methods and the various types of earthing used to ensure safety in electrical systems. Safety precautions for electrical appliances are also discussed.
