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Electrotechnics

Code:

LACI11002

Sigla:

E

Áreas Científicas
Classificação	Área Científica
OFICIAL	Electric Power Systems

Ocorrência: 2023/2024 - 1S

Ativa?	Yes
Unidade Responsável:	Departamento de Engenharia Eletrotécnica
Curso/CE Responsável:

Ciclos de Estudo/Cursos

Sigla	Nº de Estudantes	Plano de Estudos	Anos Curriculares	Créditos UCN	Créditos ECTS	Horas de Contacto	Horas Totais
EACI	24	Plano de Estudos 14	1	-	6	75	162

Língua de trabalho

Portuguese

Objetivos

In the UC of Electrotechnics, a basic discipline in the field of engineering sciences, it is intended that students acquire fundamental skills in the field of Electrotechnical Engineering, namely to enable them to understand phenomena of an electromagnetic nature and to analyze electrical circuits in direct and alternating current. It is also intended that students are in possession of instruments (base knowledge and bibliographic guidelines) that allow the eventual continuation and deepening of studies. In structuring the UC, and in order to achieve the objectives, we seek to complement theoretical knowledge and problem solving with laboratory practice.

Resultados de aprendizagem e competências

In the UC of Electrotechnics, a basic discipline in the field of engineering sciences, it is intended that students acquire fundamental skills in the field of Electrotechnical Engineering, namely to enable them to understand phenomena of an electromagnetic nature and to analyze electrical circuits in direct and alternating current. It is also intended that students are in possession of instruments (base knowledge and bibliographic guidelines) that allow the eventual continuation and deepening of studies. In structuring the UC, and in order to achieve the objectives, we seek to complement theoretical knowledge and problem solving with laboratory practice.

Modo de trabalho

Presencial

Programa

1. Introduction to Electrotechnics
Framework and objectives.

2. Fundamentals of Electrostatics
Electric charge; electrostatic force; Coulomb's Law. Electric field; Electric potential; Electric tension. Condensers and dielectrics; capacitor association.

3. Stationary Electric Current
Electric Current Intensity; Electrical Resistance; Ohm's Law; Resistance Association; Voltage and current dividers. Electric power sources; Voltage and Current Sources; Electric circuit; Power and Energy; Joule's Law. Analysis of Resistive Circuits in DC. Kirchhoff's Laws. Overlay Theorem. Norton's and Thèvenin's theorems.

4. Magnetostatics
Classification of magnetic materials; Ampere's Law; magnetic flux; Magnetomotive force; Magnetic reluctance; Magnetic saturation; coils; Analysis of Magnetic Circuits; Hopkinson's Law. Analogy between electric and magnetic circuits.

5. Variable Electromagnetic Field
Faraday's Law; Coefficient of self-induction and mutual induction; Transformer working principle; Operating principle of mechanical electric power generators; Operating principle of motors (Laplace force).

6. Circuits in Quasi-Stationary Regime
Fundamental notions: sinusoidal alternating quantities; average value and effective value; complex or symbolic representation of an alternating sinusoidal function.
Analysis of Sinusoidal Alternating Single-Phase Circuits in Steady State. Circuit R; RL; CR; RLC; Notions of impedance and reactance; Association of impedances; Active, Reactive and Apparent Powers; Power factor. Analysis of Three-Phase Circuits.

Bibliografia Obrigatória

A.J. Pires; Sides de apoio

Bibliografia Complementar

K. B. Santos; Análise de Circuitos Elétricos, , Minerva Editora
Sadiku; Elements of Electromagnetics, Saunders College Publishings
L. Bessonov; Electricidade Aplicada para Engenheiros. ISBN: 9726820219

Métodos de ensino e atividades de aprendizagem

In the classes of this UC, both theoretical-practical and laboratory, we will seek to encourage the active participation of students in their learning process, making use of their critical spirit. In theoretical-practical classes there will be a part associated with the presentation of the UC syllabus, always supported in another part, associated with problem solving. In laboratory classes, the student will have the opportunity to carry out eight laboratory works

Tipo de avaliação

Distributed evaluation without final exam

Componentes de Avaliação

Designation	Peso (%)
Teste	65,00
Trabalho laboratorial	35,00
Total:	100,00

Componentes de Ocupação

Designation	Tempo (Horas)
Estudo autónomo	87,00
Frequência das aulas	45,00
Trabalho laboratorial	30,00
Total:	162,00

Obtenção de frequência

The assessment is made up of two components, which complement each other: two tests (or final exam) (65%, and a minimum grade of 7 points in each test and 9 points in the average of the tests (or in the final exam)), where the learning concepts and solving problems; carrying out laboratory work, including the respective reports and final discussion (35%, with a minimum grade of 9 points).

1. Theoretical and Practical (65%)
- Carrying out two tests (or final exam) (50%). Minimum grade: 9 points.
2. Laboratory (35%)
- Carrying out experimental work and preparing and discussing the respective reports. Minimum grade: 9 points.

Final Classification Calculation:
Final grade for the course = 65% theoretical/practical + 35% laboratory (minimum: 9.5 points)

The laboratory part of the discipline is made up of eight different works.

Special Assessment (TE, DA, ...)
In accordance with the rules in force at the institution.
Final/Distributed Classification Improvement
In accordance with the rules in force at the institution.

Fórmula de cálculo da classificação final

The final grade for the course will be calculated as follows:

Laboratory grade (NL), calculated based on the performance of the work and individual assessments
Theoretical grade (NT) of the final exam must be equal to or greater than 9 or the average of the marks of the two tests, rounded to the nearest unit.
Final classification:

The final grade of the course will be calculated as follows: Final Grade=0.65*NT+0.35*NL
Final exam grade or test average that must be greater than or equal to 9, with a weight of 65%.