Educational guide 2023_24 Facultade de Ciencias

Contents

Topic	Sub-topic
Subject I: Introduction and axioms.	Load, current, electrical potential, energy and electrical power, law of Ohm, law of Joule and laws of Kirchoff. Ideal elements: Sources, resistance, coil, condenser and transformer. Real elements: Sources, resistance, coil and condenser.
Subject II: Continuos current curcuits.	Analysis of electrical circuits of continuous current. Association of elements in series and parallel, star and triangle.
Subject III: Alternating current circuits: single-phase.	Characteristic values of the sine functions. Concept of phasor. Behaviour of the elements in alternating current. Combinations of elements. Powers: complex, apparent, active, reactive. Theorem of Boucherot.
Subject IV: Alternating current circuits: three-phases	Values of line and phase. Reduction to the equivalent single-phase circuit.
Subject V: Electrical machines.	Transformers: constitution, operation in empty and in load, equivalent circuit, time index. Asynchronous machines: constitution, generation of the rotating field, in no-load operation and in load, equivalent circuit, characteristic curves, maneuverss.
Subject VI: Electrical installations.	Introduction to the electrical power systems. Low-voltage electrical installations.Constitutive elements. Workload Estimate. Introduction to the installation calculation