June 2015 The Hong Kong Polytechnic University Hong Kong Community College Subject Description Form Subject Code CCN2246 Subject Title Basic Electricity and Electronics Level 2 Credit Value 3 Medium of Instruction English Pre-requisite / Co-requisite/ Exclusion Nil Objectives This subject introduces the fundamental concepts and techniques of electrical and electronic circuit analysis to students. It develops students’ skills in analysing the basic direct-current and alternatingcurrent circuits and applying the circuits. In addition, it helps students understand the principles and applications of electrical machines and diodes. Intended Learning Outcomes Upon completion of the subject, students will be able to: (a) describe and explain the principles of electrical and diode circuits. (b) apply analytical techniques to solve simple problems of electrical and diode circuits. (c) analyse the functions and applications of electrical machines and diodes. (d) Indicative Syllabus carry out independent environment. investigation in an improvised Direct Current Circuits Introduction to electric circuits; Potential and potential difference; Charge and flow of charge; Voltage and Current as two basic variables; Ohm’s law; Resistance; Kirchhoff’s current and voltage laws; Loop and node analysis; Thévenin and Norton theorems; Independent and dependent sources; Simple circuit styles: voltage divider, current divider, series and parallel circuits; Power dissipation; Source loading and maximum power transfer. Capacitance, Inductance and First Order Transients Constitutive relations of capacitor and inductor; Brief introduction to 1 June 2015 electric and magnetic fields; Introduction to time-varying circuits; Simple RC and LC circuits; Important concept of independent state variables; First-order differential equation and transient analysis; Time domain solution and transient behaviour of first order circuits; Time constant. Alternating-Current Circuits Average and RMS values; Phasors (rotating vectors); Steady-state analysis of circuits driven by single fixed frequency sinusoidal sources; Impedance and admittance; Phasor diagrams for simple circuits; Systematic complex number analysis; Real and reactive power; Power factor; Three-phase circuits. Mutual Inductance and Transformer Basic coupled inductance equation; Concept of ideal transformer; Dot convention. DC Motors Construction, motor action, operating characteristics and starting issues. Instrumentation and Measurement Choice of measurement method; Analogue and digital instrumentals; Bridges; Measurement uncertainties. Basic Diode Circuits I-V characteristics of general nonlinear components; Diode as specific case; Diode models; Diode applications. Teaching/Learning Methodology Lectures focus on the introduction and explanation of concepts and theories supported by hypothetical and real examples wherever appropriate. Laboratory sessions may be arranged to stimulate students’ interest or their awareness of practical implications of some concepts. Worksheets may also be used in tutorials to help students practise and apply their knowledge in electrical and electronic engineering. Assessment Methods in Alignment with Intended Learning Outcomes A variety of assessment tools will be used to develop and assess students’ achievement of the subject intended learning outcomes. % Intended subject learning weighting outcomes to be assessed Specific assessment methods/tasks a b Continuous Assessment* 40 Test 14 9 9 Individual Assignment 20 9 9 Group Assignment 6 9 2 c d 9 9 9 June 2015 Final Examination 60 Total 100 9 9 9 *Continuous assessment items and/or weighting may be adjusted by the subject team subject to the approval of the College Programme Committee. To pass this subject, students are required to obtain Grade D or above in both the Continuous Assessment and Final Examination. Student Study Effort Expected Class contact Hours Lecture 26 Tutorial 13 Laboratory 4 Other student study effort Self-study 52 Continuous Assessment 39 Total student study effort Reading List and References 134 Recommended Textbook Alexander C. K. & Sadiku M. N. O. (2013). Fundamentals of Electric Circuits. (5th ed.), McGraw-Hill. References Rizzoni G. (2007). Principles and applications of electrical engineering. (5th ed.), McGraw-Hill. Boylestad, R.L. & Nashelsky, L. (2002). Introduction to electricity, electronics, and electromagnetics. (5th ed.), Prentice Hall. Floyd, T.L. (2010). Electronics fundamentals: Circuits, devices and applications. (8th ed.), Prentice Hall. Hughes, E. (2012). Hughes electrical and electronic technology. (11th ed.), Prentice Hall. Kerns, D. V. & Irwin, J. D. (2004). Essentials of electrical and computer engineering. (1st ed.), Prentice Hall. Goody, R. W. (2001). MicroSim PSpice for Windows Vol. 1: DC, AC, and Devices & circuits. (3rd ed.), Prentice Hall. 3