This module aims to provide an introduction to AC signals and the basic elements ofAC circuits. The student is familiarised with a range of components,measurement techniques. The concept of a phasor is introduced and applied to solve a variety of reactive circuits. Basic principles and applications of Electromagnetism are introduced.
A.C. Circuits
Sinusoids, mathematical representation. Phasors, complex notation, reactanceand impedance. Application of Kirchhoff's laws and other circuit laws to a.c. circuits containing R, Land C components.
AC Power
R.M.S. values of signals. Instantaneous power. True, reactive and apparent power. Power factor. Maximum Powertransfer theorem for ac circuits.
Frequency Response.
Basic filters: simple first order LPF and HPF. Total impedance of simple RLC circuits in complex form, and the resonant condition.
Electromagnetism
Magnets and magnetic fields. Motion of charged particles in magnetic fields. Force on a current-carrying conductor in a magnetic field. Magnetic field due to a straight conductor, a coil and a solenoid. Electromagnetic induction: Faraday's law, Lenz's law. Introduction to DC motors and AC generators. Transformers.
| Module Content & Assessment | |
|---|---|
| Assessment Breakdown | % |
| Other Assessment(s) | 40 |
| Formal Examination | 60 |