## SYNOPSIS

ELECTRICAL TECHNOLOGY introduces students to the principles of operation of DC electrical circuits. It covers the fundamental laws, theorems and circuit techniques. This course also covers cells and batteries, magnetic and electromagnetic circuits.

## COURSE LEARNING OUTCOMES (CLO)

Upon completion of this course, students should be able to:

- Explain DC circuit concepts and their analyses with different method and approach. (C2)
- Apply the knowledge of DC circuit laws and theorems in solving problem related to DC electrical circuit. (C3)
- Use appropriate components and measuring equipment to perform related DC electrical circuit laboratory exercises. (P4)
- Demonstrate team working efficiency while doing practical work. (A3)

## SUMMARY OF SUBJECT

**1.0 UNIT ASSOCIATED WITH BASIC ELECTRICAL QUANTITIES**

SI units, charges, force, work, power, electrical potential and e.m.f., resistance and conductance, electrical power and energy, summary of terms, unit and their symbols.

**2.0 CELLS AND BATTERIES**

General features of batteries, Primary and secondary cells, series and parallel cells; current drain depends on load resistance, internal resistance of a generator.

**3.0 INTRODUCTION TO ELECTRIC CIRCUIT**

Standard symbols for electrical components, electric current and quantity of electricity, potential difference, resistance and resistivity, Ohm’s law, series circuit – equivalent series resistance and the voltage divider, parallel circuit – equivalent parallel resistance and the current divider. Combination of series and parallel circuits. Introduction to Delta–Star transformation. Electrical power and energy, main effects of electric current.

**4.0 DC EQUIVALENT CIRCUIT AND NETWORK THEOREMS**

Introduction to methods of analysis for resistive circuits, node and mesh, Kirchoff’s Current Law and Kirchoff’s Voltage Law, Thevenin’s Theorem, Norton’s Theorem, Superposition Theorem, Maximum Power Transfer Theorem.

**5.0 CAPACITORS AND CAPACITANCE**

Capacitance, capacitor construction, capacitance equivalent circuits for series and parallel connections, energy storage, capacitor current, single Capacitor DC-excited circuits.

**6.0 INDUCTORS AND INDUCTANCE**

Inductance, inductor construction, inductance equivalent circuits for series and parallel connections, inductor voltage and current relation, energy storage, single-inductor DC-Excited circuits.

**7.0 MAGNETIC CIRCUIT, ELECTROMAGNETISM AND ELECTROMAGNETIC INDUCTION**

Magnetic fields, magnetic flux, flux density, magneto motive force, magnetic field strength, permeability, b-h curve, reluctance, composite series magnetic circuit, comparison between electrical and magnetic quantities, hysteresis.Magnetic field due to electric current, electromagnets, introduction to electromagnetic induction, laws of electromagnetic induction