Basic Electrotechnology

1. Introduction to BASIC 1.1 The BASIC Approach 1.2 The Elements of BASIC 1.3 Checking Programs 1.4 Summary of Minimal BASIC Statements 1.5 Bibliography2. Use of Complex Numbers in A.C. Circuit Analysis Essential Theory 2.1 Introduction 2.2 Complex Numbers 2.3 Representation of Sine Waves by Complex Notation 2.4 Resistance 2.5 Inductance and Inductive Reactance 2.6 Capacitance and Capacitive Reactance 2.7 Impedance 2.8 Bibliography Worked Examples 2.1 COMMUL: Complex Number Multiplication 2.2 CARPOL: Cartesian to Polar Conversion 2.3 RTEMP: The Effect of Temperature on Conductor Performance 2.4 WAVES: Characteristics of Periodic Waveforms Problems3. Linear Electric Circuits Essential Theory 3.1 Introduction 3.2 Kirchoff's Voltage Law and Mesh Current Analysis 3.3 Inclusion of Mutual Inductance in Networks 3.4 Kirchoff's Current Law and Node Voltage Analysis 3.5 Power 3.6 Power and Transfer and Efficiency 3.7 Bibliography Worked Examples 3.1 SOURCE: A.C. Source Impedance by Measurement 3.2 PARRES: Effect of Frequency on Characteristics of Parallel A.C. Circuit 3.3 NODE: Node Voltage Analysis Problems 704. Magnetic Circuits Essential Theory 4.1 Introduction 4.2 Magnetic Circuit Parameters and Laws 4.3 Solution of Simple Magnetic Circuit 4.4 Analogy between Magnetic and Electric Circuits 4.5 Iron Losses 4.6 Permanent Magnet Circuits 4.7 Bibliography Worked Examples 4.1 CCORE: Analysis of C-Core with Coil Excitation 4.2 ROTORB: Air-gap Flux Density Set up in Basic Rotary Machine 4.3 FELOSS: Iron Loss Variation with Material, f and B 4.4 MAGNETS: Comparison of Permanent Magnet Materials Problems5. The Transformer Essential Theory 5.1 Introduction 5.2 The Ideal Two-Winding Transformer 5.3 Equivalent Circuits for Real Transformer 5.4 Referred Impedances 5.5 Transformer Tests 5.6 Transformer Performance 5.7 The Autotransformer 5.8 Practical Transformer Construction 5.9 Bibliography Worked Examples 5.1 TRNSTNS: Calculation of Transformer Turns 5.2 IOMAG: Magnetizing Current Waveform 5.3 TRANSCT: 'Exact' Equivalent Circuit for Transformer 5.4 TRANTST: Equivalent Circuit Parameters from test Results Problems6. Electromechanical Energy Conversion Essential Theory 6.1 Introduction 6.2 Energy Balance in Electromechanical System 6.3 Mechanical Work and Force in a Singly-Excited Magnetically-Linear System 6.4 Comparative Force Levels in Electromagnetic and Electrostatic Systems 6.5 Doubly-Excited Systems 6.6 Non-Linear Systems 6.7 Bibliography Worked Examples 6.1 LOCUS: Dynamic Performance of D.C. Relay 6.2 WMETER: Calculation of Scale Graduations on an Electrodynamic Wattmeter 6.3 TORQUE: Torque-Angle Characteristics for Basic Rotary Machine 6.4 ENERGY: Ideal 'Slow' Operation of Magnetically non-Linear Relay ProblemsIndex