UNIT-I : D.C. Circuits Electrical circuit elements (R, L and C), voltage and current sources, KVL & KCL, analysis of simple circuits with dc excitation. (Chapter - 1) A.C. Circuits Representation of sinusoidal waveforms, peak and rms values, phasor representation, real power, reactive power, apparent power, power factor, Analysis of single-phase ac circuits, Three-pase ac balanced circuits, voltage and current relations in star and delta connections. (Chapter - 2) UNIT-II : Electrical Installations Components of LT Switchgear : Switch Fuse Unit (SFU), MCB, ELCB, MCCB, Types of Wires and Cables, Earthing. Types of Batteries, Important Characteristics for Batteries. Elementary calculations for energy consumption, power factor improvement and battery backup. (Chapter - 3) UNIT-III : Electrical Machines Working principle of Single-phase transformer, equivalent circuit, losses in transformers, efficiency, Three-phase transformer connections. Construction and working principle of DC generators, EMF equation, working principle of DC motors, Torque equations and Speed control of DC motors, Construction and working principle of Three-phase Induction motor, Torques equations and Speed control of Three-phase induction motor. Construction and working principle of synchronous generators. (Chapter - 4) UNIT-IV : P-N Junction and Zener Diode : Principle of Operation Diode equation, Volt-Ampere characteristics, Temperature dependence, Ideal versus practical, Static and dynamic resistances, Equivalent circuit, Zener diode characteristics and applications. (Chapter - 5) Rectifiers and Filters : P-N junction as a rectifier - Half Wave Rectifier, Ripple Factor - Full Wave Rectifier, Bridge Rectifier, Harmonic components in Rectifier Circuits, Filters – Inductor Filters, Capacitor Filters, L- section Filters, - section Filters. (Chapter - 6) UNIT-V : Bipolar Junction Transistor (BJT) : Construction, Principle of Operation, Amplifying Action, Common Emitter, Common Base and Common Collector configurations, Comparison of CE, CB and CC configurations. (Chapter - 7) Field Effect Transistor (FET) : Construction, Principle of Operation, Comparison of BJT and FET, Biasing FET. (Chapter - 8)
