Evidence shall show that knowledge has been acquired of safe working practices and provide engineering solutions for solving problems in complex multiple path circuits. All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies. KS01-EE125A Circuit analysis Evidence shall show an understanding of circuit analysis to an extent indicated by the following aspects: T1 Voltage/Current Sources and Kirchhoff’s Law for d.c. Linear Circuits encompassing: calculating the effect of the internal resistance on terminal voltage and current delivered for practical voltage sources and current sources calculating current and voltage in any d.c. network of up to two loops and three sources. Kirchhoff’s Law using a circuit simulation program. function and operation of an electronics circuit simulation program. using electronics circuit simulation program. T2 Superposition Principles for d.c. Linear Circuits encompassing: d.c. networks (two loops, three sources) using simulation programs calculating current and voltage in any d.c. network of up to two loops and three sources. Superposition theorem using a circuit simulation program. T3 Mesh and Nodal Analysis for d.c. Linear Circuits encompassing: writing mesh equations for d.c. networks containing up to three loops. writing Nodal equations for d.c. networks containing up to three nodes. using mesh analysis to find currents in d.c. networks of up to two loops. using nodal analysis to find node voltage and branch currents in d.c. networks of up to two nodes using a circuit simulation program to confirm the results of Mesh analysis or Nodal analysis of d.c. networks. T4 Thévenin’s principles for d.c. Linear Circuits encompassing: calculating the effect of the internal resistance on terminal voltage and current delivered for practical voltage sources and current sources. calculating the Thévenin equivalent voltage and resistance for d.c. networks and determining the load current, voltage and power. converting the Thévenin equivalent circuit to a Norton equivalent circuit and vice versa. verifying the equivalence of Thévenin equivalent circuits by measurement. T5 Norton’s principles for d.c. linear circuits encompassing: calculating the effect of the internal resistance on terminal voltage and current delivered for practical voltage sources and current sources. calculating the Norton equivalent current and resistance for d.c. networks and determining the load current, voltage and power. converting the Thévenin equivalent circuit to a Norton equivalent circuit and vice versa. verifying the equivalence of Norton equivalent circuits by measurement. T6 Phasors encompassing: time domain and frequency domain frequency, angular frequency and units of measurement defining rms and convert between time domain and rms phasor values for a sine wave. converting between angular frequency and frequency. using a calculator to convert between polar and rectangular forms of phasor. representing a.c. voltages on a phasor diagram. T7 Complex Impedance encompassing: defining impedance, resistance and reactance. defining admittance, conductance and susceptance. converting between conductance to resistance. converting between susceptance and reactance. converting between impedance and admittance. sketching impedance and admittance diagrams. calculating two-component series equivalent circuits and two-component parallel equivalent circuits and convert between these forms. T8 Series and parallel a.c. linear circuits encompassing: Kirchhoff’s Laws series equivalent impedance parallel equivalent impedance voltage divider and current divider rules calculating and measuring voltage and currents in a series a.c .circuit and draw the phasor diagram. calculating and measuring currents in a parallel a.c. circuit and draw the phasor diagram. calculating and measuring voltage and currents in a series/parallel a.c. circuit and draw the phasor diagram. T9 Superposition principles and Kirchoff’s Laws applied to a.c. linear circuits encompassing: calculating current and voltage in any a.c. network of up to two loops and two sources. using circuit simulation programs to demonstrate the superposition theorem. function and operation of an electronics circuit simulation program. entering given circuit specifications into an electronic circuit program. setting the circuit simulation program operation parameters including input and output values, ranges and graduation. producing hardcopies of the circuit and analyse results. T10 Mesh and Nodal analysis for a.c. linear circuits encompassing: Mesh analysis Node voltages and nodal analysis matrix representation method of determinants writing mesh equations for a.c. networks containing up to three loops. writing nodal equations for a.c. networks containing up to three nodes. using mesh analysis to find currents in a.c. networks of up to two loops. using nodal analysis to find node voltage and branch currents in a.c. networks of up to two nodes. using a circuit simulation program to confirm the results of mesh analysis or nodal analysis of a.c. networks. T11 Thévenin and Norton theorems applied to a.c. linear circuits encompassing: calculating the effect of the internal resistance on terminal voltage and current delivered for practical voltage sources and current sources. calculating the Thévenin equivalent voltage and impedance for a.c. networks and determining the load current, voltage and power. calculating the Norton equivalent current and impedance for a.c. networks and determining the load current, voltage and power. converting the Thévenin equivalent circuit to a Norton equivalent circuit and vice versa. verifying the equivalence of Thévenin and Norton equivalent circuits by measurement. T12 Star-delta conversions encompassing: Star connections Star-delta transformation formula equations selection of appropriate conversion calculating the delta connected equivalent of a star connected balanced a.c. or d.c. load and vice versa. converting a complex non-series/parallel network to a series/parallel network by means of star-delta or delta-star conversions. verifying star-delta and delta-star network conversions by measurements. T13 Complex a.c. power and maximum power transfer theorem encompassing: true power, reactive power and apparent power maximum power transfer calculating real, reactive and apparent power for series/parallel a.c. circuits and state the appropriate units of measurement. calculating the power factor of a.c. series/parallel circuits. drawing power triangle for a given circuit. calculating the load value which would consume maximum power and calculate this power for d.c. networks. calculating the load value which would consume maximum power in an a.c. network when the load is a pure resistance and calculate the power. calculating the load value which would consume maximum power in an a.c. network when the load is an impedance of variable resistance and reactance and calculate the power. verifying load selection by measurement. T14 Transients encompassing: transients in R-C and R-L circuits growth and decay calculating voltage and currents in R-C series circuits using exponential equations. calculating voltage and currents in R-L series circuits using exponential equations |