Document ID: chunk:federal_register_of_legislation:F2025C00150:reg:1:p5
Version: federal_register_of_legislation:F2025C00150
Segment Type: reg
Provision Reference: reg 1 (pt 5/29)
Character Range: 107489–112422

operation;
    Hand clasp rules to determine: magnetic field around current carrying conductor.
(b)                                                                                                                                                                                                   —     2                                    2
    Magneto-motive force, field strength, magnetic flux density, permeability, hysteresis loop, retentivity, coercive force reluctance, saturation point, eddy currents;
    Precautions for care and storage of magnets.
3.11   Inductance and inductor                                                                                                                                                                        —     2                                    2
Faraday's Law;
Action of inducing a voltage in a conductor moving in a magnetic field;
Induction principles;
Effects of the following on the magnitude of an induced voltage: magnetic field strength, rate of change of flux, number of conductor turns;
Mutual induction;
The effect the rate of change of primary current and mutual inductance has on induced voltage;
Factors affecting mutual inductance: number of turns in coil, physical size of coil, permeability of coil, position of coils with respect to each other;
Lenz's Law and polarity determining rules;
Back emf, self-induction;
Saturation point;
Principal uses of inductors.
3.12   DC motor and generator theory                                                                                                                                                                  —     2                                    2
Basic motor and generator theory;
Construction and purpose of components in DC generator;
Operation of, and factors affecting output and direction of, current flow in DC generators;
Operation of, and factors affecting output power, torque, speed and direction of rotation of DC motors;
Series wound, shunt wound and compound motors;
Starter generator construction.
3.13   AC theory                                                                                                                                                                                      1     2                                    2
Sinusoidal waveform: phase, period, frequency, cycle;
Instantaneous, average, root mean square, peak, peak to peak current values and calculations of these values, in relation to voltage, current and power;
Triangular and square waves;
Single and 3 phase principles.
3.14   Resistive (R), Capacitive (C) and Inductive (L) Circuits                                                                                                                                       —     2                                    2
Phase relationship of voltage and current in L, C and R circuits, parallel, series and series parallel;
Power dissipation in L, C and R circuits;
Impedance, phase angle, power factor and current calculations;
True power, apparent power and reactive power calculations.
3.15   Transformers                                                                                                                                                                                   —     2                                    2
Transformer construction principles and operation;
Transformer losses and methods for overcoming them;
Transformer action under load and no-load conditions;
Power transfer, efficiency, polarity markings;
Calculation of line and phase voltages and currents;
Calculation of power in a 3 phase system;
Primary and secondary current, voltage, turns ratio, power, efficiency;
Autotransformers.
3.16   Filters                                                                                                                                                                                        —     1                                    1
Operation, application and uses of the following filters: low pass, high pass, band pass, band stop.
3.17   AC generators                                                                                                                                                                                  —     2                                    2
Rotation of loop in a magnetic field and waveform produced;
Operation and construction of revolving armature and revolving field type AC generators;
Single phase, 2 phase and 3 phase alternators;
Three phase star and delta connections advantages and uses;
Permanent magnet generators.
3.18   AC motors                                                                                                                                                                                      —     2                                    2
Construction, principles of operation and characteristics of:
AC synchronous and induction motors both single and polyphase;