A three-phase emf source is one having three distinct emf's. Such a three-phase source is said to be balanced when (1) the three emf's have the same effective values, and (2) the vectors representing ...

Definition. A sine function of x is of the form Frequent reference is made in the text to the average and effective values of a sine function. These are now defined.

Circuit components have various properties ... Mains electricity and alternating current - Edexcel Electricity can flow either as direct or alternating current, and is used in homes to power ...

Alternating current circuits, three phase circuits, basics of electromagnetic field theory, magnetic circuits, inductance, electromechanical energy conversion. Ideal transformer, iron-core transformer ...

Common applications include turning alternating current (AC) to direct current (DC), isolating signals ... Resistor The resistor is a passive electrical component that introduces resistance to the ...

This module introduces the basic principles underlying electric circuits. The idea of a circuit, and the concepts of voltage, current and power are introduced for both alternating and direct sources.