2025
Electrical Theory
Name: Electrical Theory
Code: EME13010L
6 ECTS
Duration: 15 weeks/156 hours
Scientific Area:
Electrotechnical Engineering
Teaching languages: Portuguese
Languages of tutoring support: Portuguese, English
Regime de Frequência: Presencial
Sustainable Development Goals
Learning Goals
The learning objectives of this course are to develop an understanding of the fundamental concepts of electricity, such as charge, current, voltage, and resistance. Students will also learn to analyze both direct current (DC) and alternating current (AC) circuits, using Kirchhoff's Laws and important theorems such as Norton, Thévenin, and the maximum power transfer theorem. Additionally, the principles of magnetic circuits, including magnetic flux and reluctance, and their analogy with electrical circuits, will be studied. The operation of electrical machines, such as transformers, generators, and motors, will also be explored. Finally, students will learn to analyze three-phase systems associated with electrical transmission networks. Through problem-solving, students will acquire critical thinking skills as well as the ability to communicate with their colleagues. Time management is another skill that is intended to be introduced to the students.
Contents
1. Introduction
Voltage, current, resistance, and electrical energy. Ohm's Law. Resistor combinations. Voltage and current dividers.
2. DC Circuit Analysis
Independent and dependent voltage and current sources. Power, energy, and Joule's Law. Kirchhoff's Laws. Circuit analysis theorems.
3. Magnetic Circuit Analysis
Ampere's Law. Magnetic saturation. Coils and inductances. Analysis of magnetic circuits.
4. Principles of Operation of Electrical Machines
Faraday's Law. Transformer, motor, and generator.
5. AC Circuit Analysis
Sinusoidal quantities: average and effective values; phasors. Theorems for AC circuit analysis. R, RL, RC, and RLC circuits. Impedance and admittance. Active, reactive, and apparent power. Power factor.
6. Three-Phase Systems
Star (Wye) and Delta connections. Phase and line voltages. Phase and line currents. Three-phase circuit analysis.
Voltage, current, resistance, and electrical energy. Ohm's Law. Resistor combinations. Voltage and current dividers.
2. DC Circuit Analysis
Independent and dependent voltage and current sources. Power, energy, and Joule's Law. Kirchhoff's Laws. Circuit analysis theorems.
3. Magnetic Circuit Analysis
Ampere's Law. Magnetic saturation. Coils and inductances. Analysis of magnetic circuits.
4. Principles of Operation of Electrical Machines
Faraday's Law. Transformer, motor, and generator.
5. AC Circuit Analysis
Sinusoidal quantities: average and effective values; phasors. Theorems for AC circuit analysis. R, RL, RC, and RLC circuits. Impedance and admittance. Active, reactive, and apparent power. Power factor.
6. Three-Phase Systems
Star (Wye) and Delta connections. Phase and line voltages. Phase and line currents. Three-phase circuit analysis.
Teaching Methods
The teaching method is based on theoretical and practical classes with emphasis on electromagnetic problem solving. The student should understand Maxwell?s laws from a practical point of view.
Student tutoring available outside the class, 2 times per week in slots of 2 hours each. Email and Zoom available for basic questions or for rescheduling the tutoring timetable in order to suit each student.
Student tutoring available outside the class, 2 times per week in slots of 2 hours each. Email and Zoom available for basic questions or for rescheduling the tutoring timetable in order to suit each student.
Assessment
Assessment elements are classified using the range [0,20].
The Assessment elements are as follows:
- [F1] Test 1 - Minimum grade of 8.5 (50%)
- [F2] Test 2 - Minimum grade of 8.5 (50%)
- [Ex] Final exam (100%)
The student can choose 1 of 2 possible Assessment regimes, in which the Final Grade [NF] is calculated as follows:
i) CONTINUOUS EVALUATION: NF = (F1 + F2)/2
Approved if NF>= 9.5
Failed if NF < 9.5
ii) FINAL ASSESSMENT: NF = Ex
Approved if NF>= 9.5
Failed if NF < 9.5
The Assessment elements are as follows:
- [F1] Test 1 - Minimum grade of 8.5 (50%)
- [F2] Test 2 - Minimum grade of 8.5 (50%)
- [Ex] Final exam (100%)
The student can choose 1 of 2 possible Assessment regimes, in which the Final Grade [NF] is calculated as follows:
i) CONTINUOUS EVALUATION: NF = (F1 + F2)/2
Approved if NF>= 9.5
Failed if NF < 9.5
ii) FINAL ASSESSMENT: NF = Ex
Approved if NF>= 9.5
Failed if NF < 9.5
Teaching Staff
- Oumaima Mesbahi [responsible]
Certificações
