Elements describe the essential outcomes. | Performance criteria describe the performance needed to demonstrate achievement of the element. |
1 | Analyse circuits incorporating resistance, inductance and capacitive elements | 1.1 | Mathematical problems involving resistor inductor (RL) and resistor capacitor (RC) combinations in direct current (DC) circuits are solved |
1.2 | Mathematical problems involving resistive, inductive and capacitive reactance and overall circuit impedance in alternating current (AC) circuits are solved |
1.3 | Why large power factors are desirable in AC circuits is explained |
1.4 | Mathematical problems related to power factor correction mechanisms are solved |
1.5 | Conditions for resonance in series and parallel RLC circuit combinations are analysed |
1.6 | Mathematical problems involving resonance in series and parallel RLC circuit combinations are solved |
1.7 | Differing consequences of resonance to both RLC series and RLC parallel circuit are illustrated |
2 | Apply complex number theory to analyse AC circuit performance | 2.1 | J operator is explained |
2.2 | Rectangular notation of j operator is related to comparable trigonometric and polar notations |
2.3 | J operator is used in the addition and subtraction of phasors, applying the most appropriate notation to the solution of phasor problems involving current, voltage and impedance |
2.4 | Conductance, admittance and susceptance are distinguished from each other in terms of resistance, impedance and the j operator |
2.5 | Problems involving RL and C elements in different circuit combinations using j operator theory are solved |
2.6 | Power in AC circuit applications using j operator theory is calculated |
3 | Analyse operating principles of electrical instrumentation | 3.1 | Mathematical calculations are performed to demonstrate how moving coil and moving iron instruments may have their ranges changed |
3.2 | Mathematical calculations are performed to demonstrate how dynamometer type wattmeters may have their measuring ranges extended |
3.3 | Construction, operating principles and functions of electrical meters are outlined |
3.4 | Principal methods and instruments used in resistance measurement are detailed |
3.5 | Resistance measurements are conducted and verified using appropriate electrical instrumentation |
4 | Analyse operating principles of DC generators | 4.1 | EMF equation is applied to solve problems related to DC generators |
4.2 | Losses that may occur in DC generators are analysed |
4.3 | Appropriate parametric relationships for DC generator losses, together with expressions for output power and efficiency are derived and associated numerical problems are solved |
4.4 | Basic principles of DC armature winding techniques are explained |
4.5 | Generator armature reaction is explained |
4.6 | Expression for armature EMF is derived and applied to solve problems related to DC generators |
4.7 | Commutator arcing and how this might be minimised or eliminated is explained |
4.8 | Open circuit and load characteristic curves for separately excited, shunt, and compound wound DC generators are derived |
5 | Analyse operating principles of DC motors | 5.1 | DC torque equation is applied to solve problems related to DC motors |
5.2 | Losses that may occur in DC motors are analysed |
5.3 | Appropriate parametric relationships for DC motor losses, together with expressions for output power and efficiency are derived and associated numerical problems are solved |
5.4 | Speed equation for a DC motor is derived and corresponding characteristics for different winding configurations are sketched |
5.5 | Speed equation and characteristics of different DC motor configurations are applied to explain how DC motor speed may be controlled |
5.6 | Reasons for armature reaction and methods of compensating for its effects are identified |
5.7 | Why DC motors need variable starting resistors are explained |
6 | Compare operation of synchronous motors and generators | 6.1 | Marine applications of synchronous motors and generators are identified |
6.2 | Mathematical expression for the magnitude and rotational speed of the magnetic field produced by a three-phase supply is derived |
6.3 | Operating principle of synchronous motors is explained |
6.4 | Operation of synchronous motors and generators are compared and contrasted |
6.5 | Problems using phasor diagrams and mathematical expressions involving the effects of loads and excitation on synchronous motors are solved |
6.6 | Advantages and disadvantages of AC synchronous motors and generators are analysed |
7 | Analyse operation of single and three phase transformers | 7.1 | Basic transformation ratio and EMF equation for an ideal transformer is derived |
7.2 | No load and on load phasor diagrams for an ideal transformer are constructed, with negligible voltage drop through its windings |
7.3 | Causes of actual transformer losses are explained and relationships associated with the transformer equivalent circuit are derived |
7.4 | Open circuit and short circuit tests are applied to calculate transformer efficiency and voltage regulation |
7.5 | Problems related to the operation of auto-transformers are solved |
8 | Analyse requirements for parallel operation of AC and DC generators | 8.1 | Conditions required for shunt, series and compound wound DC generators to operate in parallel are identified |
8.2 | Numerical problems related to parallel operation of shunt, series and compound wound DC generators are solved |
8.3 | Conditions required for AC generators to operate in parallel are identified |
8.4 | Numerical problems related to parallel operation of AC generators are solved |