Electrotechnics
Áreas Científicas |
Classificação |
Área Científica |
CNAEF |
Electricity and energy |
Ocorrência: 2022/2023 - 2S
Ciclos de Estudo/Cursos
Sigla |
Nº de Estudantes |
Plano de Estudos |
Anos Curriculares |
Créditos UCN |
Créditos ECTS |
Horas de Contacto |
Horas Totais |
TSPTGA |
27 |
Plano de Estudos_2015_16 |
1 |
- |
6 |
60 |
162 |
Docência - Responsabilidades
Língua de trabalho
Portuguese
Obs.: Português
Objetivos
- Knowledge of physical concepts and materials.
- Interpret the action of electric and magnetic fields.
- Provide methods of analysis of electrical circuits in direct current and in alternating current.Resultados de aprendizagem e competências
At the end of the UC, the student should be able to:
- Understand and explain the principles that support electrostatic phenomena.
- Identify the electrical quantities and properties of electrical current. Identify electrical components and apply DC circuit analysis techniques.
- Understand and explain the fundamentals of magnetostatics and electromagnetism.
- Analyze AC circuits in steady state.
- Perform laboratory procedures and practices that allow validating and consolidating theoretical knowledge.
Modo de trabalho
Presencial
Programa
CHAPTER I - ELECTROSTATIC
Concepts and Units. Electric charge. Electric force. Coulomb Law. The electric field. Electric potential. The electrostatic potential and electrostatic energy. Capacity and capacitors. Capacitors in series and parallel. Electrical energy in a capacitor.
CHAPTER II - DC CIRCUIT ANALYSIS
Electric quantities (current intensity, voltage, power and energy). Electric resistance. Ohm’s law. Joule effect. Voltage and current sources. Energy conservation. Series and parallel resistor combinations. Kirchhoff Laws (KCL e KVL). Voltage and current dividers. Superposition theorem. Thévenin and Norton theorems.
CHAPTER III - MAGNETISM
The magnetic force between currents. Magnetic field in vacum. Biot-Savart's law. Ampére's law. Lorentz force. Electromagnetic induction. Faraday's law and Lenz’s law. Electrical generators and motors. Magnetic energy. Magnetization. Diamagnetism, paramagnetism and ferromagnetism. Saturation and Hysteresis. Magnetic circuits.
CHAPTER IV - AC CIRCUIT ANALYSIS
Fundamentals of AC circuits. Sinusoidal time-varying quantities. Average value and RMS value. Circuit analysis: R, RL, RC and RLC series; Concept of Impedance and reactance. Association of impedances. Active, Reactive and Apparent Powers; Power factor.
Bibliografia Obrigatória
Máximo Rosado; Folhas teóricas de apoio às aulas teórico-práticas.
Daniel Foito; Folhas com coleção de problemas de apoio às aulas teórico-práticas
Bibliografia Complementar
Alfredo Barbosa Henriques e Jorge Crispim Romão; Electromagnetismo, IST Press
Joseph A. Edminister; Electromagnetismo, 310 Problemas Resolvidos, Schaum McGraw-Hill
Nelson Martins; Introdução à teoria do Electromagnetismo, Editora Edgard Blucher Lda
Métodos de ensino e atividades de aprendizagem
The teaching of this course is divided into two kinds of classes: theoretical-practical and practical (laboratorial).
Theoretica l- practical classes:
- Exposition of theoretical subjects, performed with the combination of the expository method and the interpretive method, appealing to the students' participation. Solving application problems in which the active participation of students is promoted.
Laboratory classes:
- The participatory method is followed, although other active methods are also used, depending on the situation. Carrying out laboratory works with the support of specific guides.
Tipo de avaliação
Distributed evaluation with final exam
Componentes de Avaliação
Designation |
Peso (%) |
Exame |
70,00 |
Trabalho laboratorial |
30,00 |
Total: |
100,00 |
Componentes de Ocupação
Designation |
Tempo (Horas) |
Elaboração de relatório/dissertação/tese |
30,00 |
Estudo autónomo |
70,00 |
Frequência das aulas |
30,00 |
Trabalho laboratorial |
30,00 |
Total: |
160,00 |
Obtenção de frequência
The final classification (NF) will be obtained as follows:
- Classification of laboratories (NL), calculated based on the performance of the laboartory work and respective reports, equal to or greater than 9.5 values.
- Classification of the final exam (NE) equal or to greater than 9,5 values.
- In case of continuous evaluation, the classification (NT) is obtained by the average of the tests with minimum grade is 7 values.
The final classification will be calculated by:
NF = 0.7 * NE + 0.3 * NL
or
NF = 0.7 * ((NT1 + NT2) / 2) + 0.3 * NL
Fórmula de cálculo da classificação final
The final classification will be calculated by:
NF = 0.7 * NE + 0.3 * NL
or
NF = 0.7 * ((NT1 + NT2) / 2) + 0.3 * NL