# FUNDAMENTALS OF ELECTRICAL ENGINEERING + INTRODUCTION TO ELECTRONICS

## Learning outcomes of the course unit

APPLICAZIONI INDUSTRIALI ELETTRICHE

1) Knowledge and understanding.

This module aims at providing students with basic knowledge and understanding of:

- electric systems behavior in steady state, quasi steady state and dynamic conditions;

- electromechanical system behavior

- electric circuit analysis

- energetic behavior of electric systems

- magnetic circuit behavior under linear assumption

2) Applying knowledge and understanding

Students will be able to:

- analyzing and designing electric circuits

- compensate the reactive power in electric power plants

- make use of analog or digital voltmeter, ampere meter and wattmeter.

ELEMENTI DI ELETTRONICA

1) Knowledge and understanding

This module aims at providing students with basic knowledge and

understanding of:

- analysis techniques for first- and second-order systems in the frequency

domain

- transfer functions and frequency response functions

- characteristics and behavior of feedback systems

- methods for evaluating the stability of linear systems

2) Applying knowledge and understanding

Students will be able to:

- analyze the behavior of linear systems, and in particular of first- and

second-oder systems, by frequency domain analysis

- analyze behavior and stability of feedback systems.

## Prerequisites

Students must be familiar with the concepts and methods treated in the

mathematics and physics courses of the first two years of the degree

(Analisi matematica 1, Analisi matematica 2, Fisica generale 1, Fisica

generale 2).

## Course contents summary

APPLICAZIONI INDUSTRIALI ELETTRICHE

The course aims to provide the students with the general criteria to analyze the behavior electrical circuits used for industrial applications. Therefore, the contents proposed during the course include the following topics:

a) Electric Systems in steady state conditions.

b) Electric Systems in quasi steady state conditions.

c) Electric systems dynamic behavior.

d) Magnetic circuits.

ELEMENTI DI ELETTRONICA

The course aims to provide the students with the general criteria to analyze the behavior basic electronic circuits for signal processing. Therefore, the contents proposed during the course include the following topics:

1) Mathematical models of mechanical, electrical, and electro-mechanical linear systems

2) Frequency domain analysis of linear systems

3) Systems with feed-back

## Course contents

APPLICAZIONI INDUSTRIALI ELETTRICHE

a) Electric circuits in steady state conditions.

Basic of electric linear circuit theory.

Analysis of DC electric circuits

From Maxwell field theory to lumped parameters circuits. Fields, charge and current.

Kirchhoff’s current and voltage laws.

Parallel and series connections for linear circuits. Wye-Delta transformation.

Node and loop analysis.

Network theorems. Thevenin’s and Norton’s theorem. Maximum power transfer theorem.

b) Electric circuits in quasi steady state conditions.

Second order circuits. Series and parallel RLC circuits. Analysis of AC electric circuits

Phasor representatives of sinusoidal signals. Steady-state circuit analysis using phasors. Sinuosoidal steady-state power calculations. Analysis of Three-Phase circuits.

Economical aspects of electric power transmission. Frequency Response of linear circuits.

c) Electric circuits dynamic behavior.

Transient analysis of electric circuits Inductors, Capacitors and duality. First order RL and RC circuits.

d) Magnetic circuits

Magnetic circuit definition and magnetic materials behavior.

The analysis of the magnetic circuit.

Electric transformers (three phases transformers are included).

ELEMENTI DI ELETTRONICA

1) Mathematical models of mechanical, electrical, and electro-mechanical linear systems

Examples of mathematical models of mechanical, electrical, and electro-mechanical linear systems. Linearity and linearization. Dynamic response of 1st and 2nd order systems. Under-damped 2nd order systems: parameters of the step response.

2) Frequency domain analysis of linear systems

Fourier and Laplace transform: examples and rules. Transfer functions. Step response of 1st and 2nd order systems. Series-connected systems. Feedback loops. Stability and the poles of the transfer function. Periodic regime: phasors and frequency response function. Bode plots. Bode stability criterion.

## Recommended readings

The student can study the topics discussed during the course reading the following textbooks:

APPLICAZIONI INDUSTRIALI ELETTRICHE:

• G. Rizzoni “Elettrotecnica principi e applicazioni” McGraw-Hill

• G. Fabricatore, “Elettrotecnica ed applicazioni”, Ed. Liguori.

ELEMENTI DI ELETTRONICA

• Hambley, “Electrical Engineering: Principles and Applications”, 6th ed., Prentice Hall, ISBN-10: 027379325X

The notes of the lectures and exercises will be available to students and shared on the Elly web site.

## Teaching methods

The module 1 (Applicazioni Industriali Elettriche) of the course counts 6 CFUs (one CFU, University Credits equals one ECTS credit and represents the workload of a student during educational activities aimed at passing the exams), which corresponds to 42 hours of lectures.The module 2 of the course (Elementi di Elettronica) counts 3 CFUs, which corresponds to 24 hours of lectures. The educational activities include lectures and exercises. During lectures, the course topics are proposed from the theoretical and design point of view in order to promote a deep understanding of the issues and to bring out by the students any previous knowledge on the subjects in question. Slides and notes used to support the lessons will be uploaded to the Elly Platform. Notes, slides, spreadsheets, tables, and all shared material are part of the educational material. For non-attending students, it is important to stay up-to-date on the course through the Elly platform, the only communication tool used for direct teacher / student contact. On this platform, the topics discussed in the lesson will be pointed out and registered, providing the students with an index of the contents for the final exam.

## Assessment methods and criteria

Oral exam. There is a single exam for the two modules making up the integrated course.

Students who have not passed one or more exams of mathematics and physics taught in the 1st and 2nd year of the Laurea in Mechanical Engineering (Analisi matematica 1, Analisi matematica 2, Fisica generale 1, Fisica generale 2), before the oral examination, will have to demonstrate their problem-solving skills related to these courses.

As far as Applicazioni Industriali Elettriche students will have to demonstrate knowledge of the techniques for the time analysis and synthesis of electric systems including energy behavior.

It is considered important the capability to solve simple quantitative exercises by hand calculation.As far as Elementi di Elettronica, students will have to demonstrate knowledge of the techniques for the frequency-domain analysis of linear systems treated in

the lectures, and the ability to apply them. They are also expected to be able to analyze the behavior of simple circuits. It is considered important that students be able to solve simple quantitative exercises by hand calculation.

The final vote is calculated by assigning a mark in the range 0-30 for each question and then performing the weighted average of the individual evaluations, with final ceiling to the next unit; the test is exceeded if it reaches a score of at least 18 points. “30 cum laude” is given to students who achieve the highest score on each item and use precise vocabulary.