## ELECTRICAL PRINCIPLES AND CIRCUIT THEORY

 SHE Level 1 SCQF Credit Points 20.00 ECTS Credit Points 10.00 Module Code M1H624231 Module Leader Charlotte Craig School INTO Subject INTO Trimesters A (September start) B (January start)

### Summary of Content

The aim of this module is to provide students with a strong foundation and understanding of the basic concepts and principles of electrical engineering and circuit theory and to apply these principles to solve engineering problems. It provides the student with the fundamental knowledge of electric and magnetic field theory, ac and dc circuit analysis.

### Syllabus

BASIC ELECTRICAL CIRCUITS AND COMPONENTS Introduction to electric circuits, circuit symbols, SI units. MEASUREMENT OF VOLTAGES AND CURRENT Equation of a sine wave; period, amplitude, phase angles. Average and R.M.S values. Measuring voltage, current and phase. Taking measurements with multi-meters and oscilloscopes. RESISTANCE AND DC CIRCUITS Ohm's Law, Kirchhoff's Laws. Series and parallel combinations of resistors. Voltage and current division. Thevenin and Norton Theorems. Superposition, Node and Mesh analysis. CAPACITANCE AND ELECTRIC FIELDS Capacitors and alternating voltages and current. Electric field strength and electric flux density. Series and parallel combinations of capacitors. Energy stored in a capacitor. INDUCTANCE AND MAGNETIC FIELDS Electromagnetism, mmf, magnetic field strength, magnetic flux. Reluctance, inductance, self-inductance. Series and parallel combinations of inductors. Inductors and alternating voltage and current. Energy stored in an inductor. Mutual inductance and transformers. ALTERNATING VOLTAGES AND CURRENTS Reactance, phasor analysis (RL, RC, RLC arrangements). Impedance, complex notation. Using complex impedances in series and parallel arrangements POWER IN AC CIRCUITS Power dissipation. Introduction to active and reactive power and power factor correction. FREQUENCY CHARACTERISTICS OF AC CIRCUITS Two port networks. High and low pass RC and RL frequency response. Bode diagrams and cascaded filter arrangements. RLC circuits and resonance; Q factor and bandwidth. TRANSIENT BEHAVIOUR Charging of capacitors and energising of inductors. The nature of exponential curves. First order response of RL and RC circuits.

### Learning Outcomes

On the completion of this module the student should be able to:-Apply the fundamentals concepts, principles and theories that underpin electric ac and dc circuit theory and magnetic field theory.Use appropriate mathematical methods, electrical circuit principles and network theorems to model and analyse the behaviour and performance of electrical circuits.Employ appropriate computer based methods in the modelling and analysis of the dc, transient and frequency response of circuits.Set up and use appropriate laboratory instruments to test, evaluate and communicate the behaviour and performance of practical electrical circuits.

### Teaching / Learning Strategy

The module will provide a strong foundation of engineering practices by developing application-type problems and exercises that use real world physical solutions to stimulate students' interest in engineering. A blended learning approach will be used to engage students in the basic concepts, principles and theory using a Virtual Learning Environment (VLE). Flexible learning materials are available, both on and off campus, such as; textbooks, companion websites, videos, formative tests and other online resources. This flexible approach allows students to identify specific learning materials that suit their personal learning styles. Independent study will be encouraged to satisfy the students' particular interests. The use of Electronic Computer Aided design (ECAD) and Computer Based Learning (CBL) digital learning technologies will assist students in the learning process by providing a visual representation of circuit behaviour, validating a calculated solution and reducing the computational burden of more complex circuits. The material covered during lectures will be reinforced and consolidated through tutorials and practical laboratory work to encourage both individual and team skills, broaden understanding and application of electrical principles, instil confidence in the use of laboratory instruments and to engender safe working practices in the laboratory environment.

Electronics: A Systems Approach. Pearson, Neil Storey. Electrical Circuit Theory and Technology. Newness, John Bird.

### Transferrable Skills

Knowledge and understanding of scientific and mathematical principles and methodology necessary to underpin their education in their engineering discipline and to enable them to apply mathematical methods, tools and notations proficiently in the analysis and solution of engineering problems. Apply mathematical methods and scientific and engineering principles proficiently in the analysis, synthesis, performance assessment, critical appraisal and evaluation of electronic systems. Select and apply appropriate analytical and computer based methods for modelling and analysing engineering problems. Select and apply appropriate computer software tools to the synthesis, implementation, evaluation, analysis and solution of electronic problems and systems. Exercise safe working practices and demonstrate proficiency in workshop and laboratory skills. Demonstrate proficiency in the use of specialist equipment, development tools, materials and processes employed in the design, production and testing of electronic systems. Specialist knowledge and application. Critical thinking and problem solving. Critical analysis. Communication skills, written, oral and listening. Numeracy. Computer literacy. Self-confidence, self-discipline & self-reliance (independent working). Awareness of strengths and weaknesses. Reliability, integrity, honesty and ethical awareness. Ability to prioritise tasks and time management (organising and planning work).Interpersonal skills, team working and leadership.

### Module Structure

Activity Total Hours
Practicals (FT) 24.00
Independent Learning (FT) 120.00
Assessment (FT) 20.00
Tutorials (FT) 12.00
Lectures (FT) 24.00

### Assessment Methods

Component Duration Weighting Threshold Description
Coursework 1 n/a 40.00 35% Laboratory Logbook
Coursework 2 n/a 60.00 35% Class Tests