|
1 |
Electron Theory ; structure of electrical charges in the atoms, molecules, ions and distribution; molecular structure of conductors, semiconductors and insulators.
|
|
2 |
Static Electricity and Conduction; Static electricity and distribution of electrostatic charges; Electrostatic laws of attraction and repulsion; Load units, Coulomb''s Law; electricity in solids, liquids, gases and cavity transmission.
|
|
3 |
Electrical Terminology; Potential difference, electromotive force, voltage, current, resistance, conductance, charge, conventional current flow, electron flow; terms associated with these concepts, units and factors affecting these concepts.
|
|
4 |
Electricity Generation; methods of production by electric light, heat, friction, pressure, chemical action and magnetism.
|
|
5 |
DC Power Supplies; Primary and secondary batteries, lead acid batteries, nickel cadmium batteries, alkaline batteries, and other basic chemical structures and reactions; Serial and parallel batteries; The battery''s internal resistance and the impact on battery; The structure of thermocouples, materials and operation; The operation of the photocell.
|
|
6 |
DC (Direct Current) Circuits Ohm''s Law, Kirchoff''s voltage and current laws; resistance, voltage and current calculations by Ohm''s and Kirchhoff''s law; The importance of the internal resistance of a supply.
|
|
7 |
Resistance / Resistor; a) Resistance and affecting factors; Specific resistance; Resistor color code, values and tolerances, preferred values, wattage ratings; Serial and parallel resistors; Serial, parallel or series-parallel resistance calculation of the total resistance; the operation and use of potentiometers and rheostats; The operation of the Wheatstone bridge. b) Positive and negative temperature coefficient conductance; Fixed resistors, stability, tolerance and limitations, methods of construction; Variable resistors, thermistors, voltage dependent resistors; The structure of potentiometers and rheostats; The structure of the Wheatstone bridge.
|
|
8 |
Power / Power, work and energy (kinetic and potential); Dissipation of power by a resistor; Power formula; Power, work and energy-related calculations.
|
|
9 |
Capacitance / Capacitor operation and function of a capacitor; plates, distance between plates, number of plates, dielectric and dielectric constant, working voltage and capacitance voltage ratio to the size of the effect. Capacitor types, construction and function; Capacitor color coding; calculation of capacitance and voltage in series and parallel circuits; Exponential charge and discharge of a capacitor, time constants; Testing of capacitors.
|
|
10 |
Magnetism / a) Magnetism theory; Properties of a magnet; a magnet motion suspended in Earth''s magnetic field; magnetization and demagnetization; Magnetic shielding; Various types of magnetic material; Electromagnets construction and principles of operation; the magnetic field around a current-carrying conductor that determines by the ''hand'' rules. b) Magneto motor force, field strength, magnetic flux density, permeability, hysteresis loop, residual magnetic flux density, coercive force reluctance, saturation point, the eddy currents; precaution related to the care and storage of magnets.
|
|
11 |
Inductance / Inductor Faraday''s law; the induction voltage in a conductor moving in a magnetic field; Induction principles; magnetic field intensity, the rate of change of flux and the induced voltage of the effects on the number of conductor turns; Mutual induction; conversion rate and mutual inductance effects on the induced voltage; Factors affecting mutual inductance: number of turns in the coil, the coil''s physical dimensions, the permeability of the coil, the relative locations of the coils; Lenz''s Law and polarity determining rules; Back emf, self induction; Saturation point; the use of inductors principles.
|
|
12 |
AC (Alternating Current) Theory of a sinusoidal waveform: phase, period, frequency, cycle; Instantaneous, average, root mean square, peak, peak to peak current values and calculation of these values depending on the voltage, current and power; Triangle / Square waves; Single / Three-phase principles.
|
|
13 |
Resistive (R), Capacitive (C) and Inductive (L) Circuits; L, C and R circuits, parallel, series and series-parallel cases, the phase relationship of voltage and current; L, C and R circuits, power loss; Impedance, phase angle, power factor and current calculations; True power, apparent power and reactive power calculations.
|
|
14 |
Low-pass filters, high pass, band pass, band stop filter of the study, implementation and use.
|
|
15 |
|
|
16 |
|
|
17 |
|
|
18 |
|
|
19 |
|
|
20 |
|