28029 - Electrotechnics T

Learning outcomes

Methodologies for studying electrical circuits in stationary, sinusoidal and transient operations.

Course contents

Electromagnetism

Magnitudes and equations of the electromagnetic field. Fundamental equations of Electromagnetism: laws of Maxwell, law of Gauss and law of divergence, law of conservation of the charge - laws of material bond.

Circuit Theory

Circuit element and electric circuit, Kirchhoff's laws, and descriptive laws of the ideal elements: the resistor, the capacitor and the ideal inductor, the independent generators, and the piloted generators. Methods of circuit analysis: general method of analysis, method of elimination of tensions, method of nodes, principle of superimposing effects. Transfer function, Thèvenin theorem, Norton's theorem. Tellegen's theorem and power adversities. Transients, first (RC and RL) and second order circuits.

Sinusoidal Regime

Definition of amplitude, radian frequency and phase of sinusoidal quantities. Definition of phasors. Transformation from the time domain to the frequency domain: resistor, capacitor, and inductor and RLC circuit. Series and parallel resonance. Power in AC circuits. Three-phase system definition and properties; Y-connected and D-connected load. Use of the neutral wire. Power in three-phase systems.

Elements of Electrical Machines, Systems and Safety

Transformer; production, transmission and distribution of electricity. Electrical safety elements.

Readings/Bibliography

Slides and notes edited by the Teacher. Recommended books are:

• “Electric circuits” Charles K. Alexander, Matthew N. O. Sadiku and
• “Electrotechnics: Principals and Applications” G. Rizzoni.
• “Elettrotecnica: elementi di teoria ed esercizi” di M. Repetto e S. Leva
• “Elettrotecnica 1 e 1” di G. Chitarin, F. Gnesotto, M. Guarnieri, A. Machio, A. Stella

Teaching methods

The course is delivered in the classroom through theoretical lectures, which are complemented by practical exercises conducted by the Professor on the topics covered in class. Moreover, it is recommended to solve exercises similar to those addressed during the course independently in addition to the exercises done during classes.

Assessment methods

The assessment of learning takes place through a final exam that verifies the acquisition of the expected knowledge and skills, through a written test consisting of two exercises and a series of theoretical questions.

The maximum scores assigned to each part of the exam are as follows:

• 1st exercise: 10 points
• 2nd exercise: 10 points
• Theoretical questions: 11 points

The total maximum score is 31/30. To pass the exam, a minimum score of 18/30 is required.

Teaching tools

The lecture notes on the topics covered in class are available to the students and different exercises are proposed.

Office hours

See the website of Mattia Ricco