UEECD0044 - Solve problems in multiple path circuits

Students will also be expected to demonstrate the following knowledge:
*factors affecting resistance, including:
*four factors that affect the resistance of a conductor (type of material, length, cross-sectional area and temperature)
*affect the change in the type of material (resistivity) has on the resistance of a conductor
*affect the change in ‘length’ has on the resistance of a conductor
*affect the change in ‘cross-sectional area’ has on the resistance of a conductor
*effects of temperature change on the resistance of various conducting materials
*effects of resistance on the current-carrying capacity and voltage drop in cables
*techniques for calculation of the resistance of a conductor from factors such as conductor length, cross-sectional area, resistivity and changes in temperature
*using digital and analogue ohmmeter to measure the change in resistance of different types of conductive materials (copper, aluminium, nichrome and tungsten) when those materials undergo a change in type of material length, cross-sectional area and temperature
*series/parallel circuits including:
*schematic diagram of a single source d.c. series/parallel circuit
*identification of the major components of a series/parallel circuit (power supply, protection device, switch and loads)
*applications where series/parallel circuits are used in the electrotechnology industry
*characteristics of a series/parallel circuit (load connection, current paths, voltage drops, power dissipation, and effects of an open circuit in a series/parallel circuit)
*relationship between voltages, currents and resistances in a bridge network
*calculation of the total:
*resistance of a series/parallel circuit
*current of a series/parallel circuit
*voltage and the individual voltage drops of a series/parallel circuit
*techniques for setting up and connecting a single source d.c. series/parallel circuit
*resistance, voltage and current measurements in a single source d.c. series/parallel circuit
*the voltage, current, resistances or power dissipated from measured values of any two of these quantities
*parallel circuits including:
*schematic diagram of a single source d.c. parallel circuit
*identification of the major components of a parallel circuit (power supply, protection device, switch and loads)
*applications where parallel circuits are used in the electrotechnology industry
*characteristics of a parallel circuit (load connection, current paths, voltage drops, power dissipation, and effects of an open circuit in a parallel circuit)
*relationship between currents entering a junction and currents leaving a junction
*relationship between branch currents and resistances in a two-branch current divider network
*methods to calculate total:
*resistance of a parallel circuit
*current of a parallel circuit
*voltage and the individual voltage drops of a parallel circuit
*techniques for setting up and connecting a single source d.c. parallel circuit
*resistance, voltage and current measurements in a single source parallel circuit
*voltage, current, resistance or power dissipated from measured values of any of these quantities
*output current and voltage levels of connecting cells in parallel
*meters in a circuit, including:
*types, operating characteristics and purpose of instruments/meters used to measure voltage, current, resistance and insulation resistance
*advantages and disadvantages of different instruments/meters commonly used in the field
*hazards involved in using electrical instruments/meters and relevant safety control measures
*techniques to correctly connect and accurately read instruments/meters used in the field and common errors that may occur when connecting and reading meters
*consequences of incorrect connection of instruments/meters into a circuit
*techniques for calculation of resistance values using voltmeter and ammeter reading
*resistance measurement, including:
*types, operating characteristics, purpose and storage of instruments to measure resistance (including insulation resistance)
*functions of various analogue and digital insulation resistance testers
*reasons why the supply must be isolated prior to using the insulation resistance tester
*where and why the continuity test and insulation resistance test would be used in an electrical installation
*the voltage ranges of an insulation resistance tester and where each range may be used
*AS/NZS 3000 requirements for resistance measurement/testing
*purpose and method to carry out a calibration check on an resistance tester
*techniques for measurement of:
*low values of resistance using a resistance tester continuity functions
*high values of resistance using a resistance tester insulation resistance function
*resistance using volt-ammeter methods
*capacitors and capacitance including:
*techniques for identification of various types of capacitors commonly used in the electrotechnology industry
*circuit symbol of various types of capacitors: standard, variable, trimmer and polarised
*terms and units for capacitance and electric charge
*behaviour of a series d.c. circuit containing resistance and capacitance components. - charge and discharge curves
*techniques for calculation of quantities from given information: capacitance, charge and voltage
*techniques for calculation one time constant as well as the time taken to fully charge and discharge a given capacitor
*techniques for connection of a series d.c. circuit containing capacitance and resistor to determine the time constant of the circuit
*capacitors in series and parallel, including:
*hazards involved in working with capacitance effects and the safety control measures that should be taken
*safe handling and the correct methods of discharging various size capacitors
*dangers of a charged capacitor and the consequences of discharging a capacitor through a person
*effects of capacitors connected in parallel by calculating their equivalent capacitance
*effects on the total capacitance of capacitors connected in series by calculating their equivalent capacitance
*techniques for connecting capacitors in series and/or parallel configurations to achieve various capacitance values
*common faults in capacitors
*techniques for testing of capacitors to determine serviceability
*application of capacitors in the electrotechnology industry.