This book is meant for all engineering graduates of state and central universities. The book is written from a practical point of view. It contains many solved and unsolved problems taken from competitive exams and leading universities.

Contents
Unit I
1. D C Circuit Analysis and Network Theorems:
Circuit Concepts of network, Active and passive elements, voltage and current sources, concept of linearity and linear network, unilateral and bilateral elements, R, L and C as linear elements, source transformation.
Kirchhoff's laws; loop and nodal methods of analysis; star-delta transformation; Network Theorems: Superposition Theorem, Maximum Power Transfer Theorem (Simple numerical problems)

Unit II
2. Steady-State Analysis of Single Phase AC Circuits:
AC Fundamentals: Sinusoidal, square and triangular waveforms- average and effective values, form and peak factors, concept of phasors, phasor representation of sinusoidally varying voltage and current. Analysis of series, parallel and series-parallel RLC Circuits: apparent, active & reactive powers, power factor, causes and problems of low powerfactor, powerfactor improvement; resonance in series and parallel circuits, bandwidth and quality factor (simple numerical problems)

Unit III
3. Three Phase AC Circuits:
Three phase system-its necessity and advantages, meaning of phase sequence, star and delta connections, balanced supply and balanced load, line and phase voltage/ current relations, three-phase power and its measurement (simple numerical problems)

4. Measuring Insturments
Types of insturments, contruction and working principles of PMMC and moving iron type voltmeters & ammeters, single phase dynamometer wattmeter and induction type energy meter, use of shunts and multipliers (simple numerical problems on energy meter, shunts and multipliers)

Unit IV
5. Introduction to Power System
General layout of electrical power system and functions of its elements, standard transmission and distribution voltages, concept of grid (elementary treatment only)

6. Magnetic Circuit:
Magnetic circuit concepts, analogy between electric & magnetic circuits, magnetic circuits with DC and AC excitations, magnetic leakage, B-H curve, hysteresis and eddy current losses, magnetic circuit calculations, mutaual coupling

7. Single Phase Transformer:
Principle of operation, construction, e.m.f. equation equivalent circuit, power losses, efficiency (simple numerical problems), introduction to auto transformer

Unit V
8. Electrical Machines
Principles of electro mechanical energy conversion
DC Machines: types, e. m. f. equation of generator and torque equation of motor, characteristics and applications of dc motors (simple numerical problems)
Three Phase Induction Motor: types, Principles of operation, slip-torque characteristics, applications (numerical problems related to slip only)
Single Phase Induction motor: Principle of operation and introduction to methods of starting, applications
Three Phase Synchronous Machines: Principle of operation of alternator and synchronous motor and their applications.

Key Features:
. Steady state a.c. analysis using phasors.
D.C. network analysis with illustrative examples
Commonly used measuring instruments and increasing meter range.
Magnetic circuits practically used with solved examples
Static and rotating machines concepts and applications
Grid Concept
Power factor improving methods
Laboratory practicals related to the first year course