Book description
Attuned to the needs of undergraduate students of engineering in their first year, Basic Electrical Engineering enables them to build a strong foundation in the subject. A large number of realworld examples illustrate the applications of complex theories. The book comprehensively covers all the areas taught in a onesemester course and serves as an ideal study material on the subject.
Table of contents
 Cover
 Title page
 Brief Contents
 Contents
 Dedication
 Preface

Chapter 1 Concepts of Circuit Theory
 1.1 Introduction
 1.2 Electricity
 1.3 Modern electron theory
 1.4 Nature of electricity
 1.5 Charged body
 1.6 Unit of charge
 1.7 Free electrons
 1.8 Electric potential
 1.9 Potential difference
 1.10 Electric current
 1.11 Resistance
 1.12 Resistivity
 1.13 Specific resistance
 1.14 Conductance
 1.15 Electromotive force
 1.16 EMF and potential difference
 1.17 Ohm’s law
 1.18 Effect of temperature on resistance
 1.19 Temperature coefficient of resistance
 1.20 Temperature coefficient of copper at 0°C
 1.21 Effect of temperature on α
 1.22 Effect of temperature on resistivity
 1.23 Electrical energy
 1.24 Electrical power
 1.25 Mechanical work
 1.26 Mechanical power
 1.27 Heat energy
 1.28 Joules law of electrical heating
 1.29 Relation between various quantities
 1.30 D.C. Circuits
 1.31 Series circuits
 1.32 Parallel circuits
 1.33 Seriesparallel circuits
 1.34 Division of current in parallel circuits

Chapter 2 DC Circuit Analysis and Network Theorems
 2.1 Introduction
 2.2 Electric network
 2.3 Voltage and current sources
 2.4 Source transformation (conversion of voltage source to current source and vice versa)
 2.5 Kichhoff’s laws
 2.6 Wheatstone bridge
 2.7 Maxwell’s mesh current method (loop analysis)
 2.8 Nodal analysis
 2.9 Deltastar and stardelta transformation
 2.10 Superposition theorem
 2.11 Thevenin’s theorem
 2.12 Norton’s theorem
 2.13 Conversion of thevenin’s equivalent into norton’s equivalent and vice versa
 2.14 Maximum power transfer theorem
 2.15 Reciprocity theorem

Chapter 3 Electrostatics and Capacitors
 3.1 Introduction
 3.2 Coulomb’s laws of electrostatics
 3.3 Absolute and relative permittivity
 3.4 Electric field
 3.5 Electric flux
 3.6 Electric flux density (D)
 3.7 Electric intensity or field strength (E)
 3.8 Relation between σ and E
 3.9 Area vector
 3.10 Electric flux through an area
 3.11 Different ways of charge distribution
 3.12 Gauss theorem of electrostatics
 3.13 Deduction of coulomb’s law from gauss’s law
 3.14 Electric intensity due to a charged sphere
 3.15 Electric intensity due to a long charged conductor
 3.16 Electric potential
 3.17 Electric potential difference
 3.18 Potential due to charged sphere
 3.19 Potential gradient
 3.20 Breakdown potential or dielectric strength
 3.21 Capacitor
 3.22 Capacitance
 3.23 Parallelplate capacitor with composite medium
 3.24 Multiplate capacitors
 3.25 Grouping of capacitors
 3.26 Energy stored in a capacitor

Chapter 4 Batteries
 4.1 Introduction
 4.2 Electric cell
 4.3 Types of cells
 4.4 Important terms relating to an electric cell
 4.5 Grouping of cells
 4.6 Battery
 4.7 Capacity of a battery
 4.8 Efficiency of a battery
 4.9 Charge indications of a leadacid battery or cell
 4.10 Charging of lead—acid battery
 4.11 Care and maintenance of lead—acid batteries
 4.12 Applications of lead—acid batteries
 4.13 Nickel—iron alkaline cell
 4.14 Comparison between lead—acid and nickel—iron alkaline cell
 4.15 Nickel—cadmium cell
 4.16 Small nickel—cadmium cells
 4.17 Solar cells

Chapter 5 Magnetic Circuits
 5.1 Introduction
 5.2 Magnetic field and its significance
 5.3 Magnetic circuit and its analysis
 5.4 Important terms
 5.5 Comparison between magnetic and electric circuits
 5.6 Ampere turns calculations
 5.7 Series magnetic circuits
 5.8 Parallel magnetic circuits
 5.9 Leakage flux
 5.10 Magnetisation or B—H curve
 5.11 Magnetic hysteresis
 5.12 Hysteresis loss
 5.13 Importance of hysteresis loop
 5.14 Electromagnetic induction
 5.15 Faraday’s laws of electromagnetic induction
 5.16 Direction of induced emf
 5.17 Induced emf
 5.18 Dynamically induced emf
 5.19 Statically induced emf
 5.20 Selfinductance
 5.21 Mutual inductance
 5.22 Coefficient of coupling
 5.23 Inductances in series and parallel
 5.24 Energy stored in a magnetic field
 5.25 Ac excitation in magnetic circuits
 5.26 Eddy current loss

Chapter 6 AC Fundamentals
 6.1 Introduction
 6.2 Alternating voltage and current
 6.3 Difference between ac and dc
 6.4 Sinusoidal alternating quantity
 6.5 Generation of alternating voltage and current
 6.6 Equation of alternating emf and current
 6.7 Important terms
 6.8 Important relations
 6.9 Different forms of alternating voltage equation
 6.10 Values of alternating voltage and current
 6.11 Peak value
 6.12 Average value
 6.13 Average value of sinusoidal current
 6.14 Effective or rms value
 6.15 Rms value of sinusoidal current
 6.16 Form factor and peak factor
 6.17 Phasor representation of sinusoidal quantity
 6.18 Phase and phase difference
 6.19 Addition and subtraction of alternating quantities
 6.20 Phasor diagrams using rms values

Chapter 7 Singlephase AC Circuits
 7.1 Introduction
 7.2 AC circuit containing resistance only
 7.3 AC circuit containing pure inductance only
 7.4 AC circuit containing pure capacitor only
 7.5 AC series circuits
 7.6 R—L series circuit
 7.7 Impedance triangle
 7.8 True power and reactive power
 7.9 Power factor and its importance
 7.10 Qfactor of a coil
 7.11 R—C series circuit
 7.12 R—L—C series circuit
 7.13 Series resonance
 7.14 Resonance curve
 7.15 Qfactor of series resonant circuit
 7.16 AC parallel circuits
 7.17 Methods of solving parallel ac circuits
 7.18 Phasor (or vector) method
 7.19 Admittance method
 7.20 Method of phasor algebra or symbolic method or Jmethod
 7.21 Jnotation of phasor on rectangular coordinate axes
 7.22 Addition and subtraction of phasor quantities
 7.23 Multiplication and division of phasors
 7.24 Conjugate of a complex number
 7.25 Powers and roots of phasors
 7.26 Solution of series and parallel ac circuits by phasor algebra
 7.27 Parallel resonance
 7.28 Qfactor of a parallel resonant circuit
 7.29 Comparison of series and parallel resonant circuits

Chapter 8 Threephase AC Circuits
 8.1 Introduction
 8.2 Polyphase system
 8.3 Advantages of threephase system over singlephase system
 8.4 Generation of threephase emfs
 8.5 Naming the phases
 8.6 Phase sequence
 8.7 Doublesubscript notation
 8.8 Interconnection of three phases
 8.9 Star or wye (Y) connection
 8.10 Mesh or delta (∆) connection
 8.11 Connections of threephase loads
 8.12 Power in threephase circuits
 8.13 Power measurement in threephase circuits
 8.14 Threewattmeter method
 8.15 Twowattmeter method
 8.16 Twowattmeter method (balanced load)

8.17 Effect of power factor on the two wattmeter readings
 8.17.1 Power factor is unity (cos ɸ = 1) or ɸ = 0°
 8.17.2 Power factor is 0.5 (cos ɸ = 0.5) or ɸ = 60°
 8.17.3 Power factor is more than 0.5 But less than one (i.e., 1 > cos ɸ > 0.5) or 60° > ɸ > 0°
 8.17.4 Power factor is less than 0.5 But more than 0 (i.e., 0.5 > cos ɸ > 0) or 90° > ɸ >60°
 8.17.5 Power factor is 0 (cos ɸ = 0) or ɸ = 90°

Chapter 9 Measuring Instruments
 9.1 Introduction
 9.2 Concept of measurements
 9.3 Instruments and their classification
 9.4 Methods of providing controlling torque
 9.5 Methods of providing damping torque
 9.6 Measuring errors
 9.7 Errors common to all types of instruments
 9.8 Moving iron instruments
 9.9 Permanent magnet moving coil instruments
 9.10 Difference between ammeter and voltmeter
 9.11 Extension of range of ammeters and voltmeters
 9.12 Dynamometertype instruments
 9.13 Inductiontype instruments
 9.14 Name plate of energy meter
 9.15 Connections of singlephase energy meter to supply power to a domestic consumer
 9.16 Difference between wattmeter and energy meter
 9.17 Digital multimeter

Chapter 10 Singlephase Transformers
 10.1 Introduction
 10.2 Transformer
 10.3 Working principle of a transformer
 10.4 Construction of a singlephase small rating transformer
 10.5 An ideal transformer
 10.6 Transformer on dc
 10.7 EMF equation
 10.8 Transformer on noload
 10.9 Transformer on load
 10.10 Phasor diagram of a loaded transformer
 10.11 Transformer with winding resistance
 10.12 Mutual and leakage fluxes
 10.13 Equivalent reactance
 10.14 Actual transformer
 10.15 Simplified equivalent circuit
 10.16 Expression for noload secondary voltage
 10.17 Voltage regulation
 10.18 Approximate expression for voltage regulation
 10.19 Losses in a transformer
 10.20 Efficiency of a transformer
 10.21 Condition for maximum efficiency
 10.22 Allday efficiency
 10.23 Transformer tests
 10.24 Autotransformers
 10.25 Autotransformer v/s potential divider
 10.26 Saving of copper in an autotransformer
 10.27 Advantages of autotransformer over twowinding transformer
 10.28 Disadvantages of autotransformers
 10.29 Applications of autotransformers
 10.30 Classification of transformers
 10.31 Power transformer and its auxiliaries

Chapter 11 DC Machines (Generators and Motors)
 11.1 Introduction
 11.2 Electromechanical energy conversion devices (motors and generators)
 11.3 Electric generator and motor
 11.4 Main constructional features
 11.5 Armature resistance
 11.6 Simple loop generator and function of commutator
 11.7 EMF equation
 11.8 Types of dc generators
 11.9 Separately excited dc generators
 11.10 Selfexcited dc generators
 11.11 Voltage buildup in shunt generators
 11.12 Critical field resistance of a dc shunt generator
 11.13 Causes of failure to buildup voltage in a generator
 11.14 DC motor
 11.15 Working principle of dc motors
 11.16 Back emf
 11.17 Torque equation
 11.18 Shaft torque
 11.19 Comparison of generator and motor action
 11.20 Types of dc motors
 11.21 Characteristics of dc motors
 11.22 Characteristics of shunt motors
 11.23 Characteristics of series motors
 11.24 Characteristics of compound motors
 11.25 Applications and selection of dc motors
 11.26 Necessity of starter for a dc motor
 11.27 Starters for dc shunt and compoundwound motors
 11.28 Threepoint shunt motor starter
 11.29 Losses in a dc machine
 11.30 Constant and variable losses
 11.31 Stray losses
 11.32 Power flow diagram
 11.33 Efficiency of a dc machine

Chapter 12 ThreePhase Induction Motors
 12.1 Introduction
 12.2 Constructional features of a threephase induction motor
 12.3 Production of revolving field
 12.4 Principle of operation
 12.5 Reversal of direction of rotation of threephase induction motors
 12.6 Slip
 12.7 Frequency of rotor currents
 12.8 Speed of rotor field or mmf
 12.9 Rotor emf
 12.10 Rotor resistance
 12.11 Rotor reactance
 12.12 Rotor impedance
 12.13 Rotor current and power factor
 12.14 Simplified equivalent circuit of rotor
 12.15 Stator parameters
 12.16 Induction motor on noload (rotor circuit open)
 12.17 Induction motor on load
 12.18 Losses in an induction motor
 12.19 Power flow diagram
 12.20 Relation between rotor copper loss, slip, and rotor input
 12.21 Rotor efficiency
 12.22 Torque developed by an induction motor
 12.23 Condition for maximum torque and equation for maximum torque
 12.24 Starting torque
 12.25 Ratio of starting to maximum torque
 12.26 Ratio of fullload torque to maximum torque
 12.27 Effect of change in supply voltage on torque
 12.28 Torqueslip curve
 12.29 Torquespeed curve and operating region
 12.30 Effect of rotor resistance on torqueslip curve
 12.31 Comparison of squirrelcage and phasewound induction motors
 12.32 Necessity of a starter
 12.33 Starting methods of squirrelcage induction motors
 12.34 Starting method of slipring induction motors
 12.35 Applications of threephase induction motors
 12.36 Comparison between induction motor and synchronous motor
 12.37 Speed control of induction motors

Chapter 13 SinglePhase Induction Motors
 13.1 Introduction
 13.2 Nature of field produced in singlephase induction motors
 13.3 Torque produced by singlephase induction motor
 13.4 Types of motors
 13.5 Splitphase motors
 13.6 Capacitor motors
 13.7 Shaded pole motor
 13.8 Reluctance start motor
 13.9 Ac series motor or commutator motor
 13.10 Universal motor
 13.11 Speed control of singlephase induction motors (fan regulator)

Chapter 14 ThreePhase Synchronous Machines
 14.1 Introduction
 14.2 Synchronous machine
 14.3 Basic principles
 14.4 Generator and motor action
 14.5 Production of sinusoidal alternating emf
 14.6 Relation between frequency speed and number of poles
 14.7 Constructional features of synchronous machines
 14.8 Advantages of rotating field system over stationary field system
 14.9 Threephase synchronous machines
 14.10 EMF equation
 14.11 Working principle of a threephase synchronous motor
 14.12 Synchronous motor on load
 14.13 Effect of change in excitation
 14.14 Vcurves
 14.15 Application of synchronous motor as a synchronous condenser
 14.16 Characteristics of synchronous motor
 14.17 Methods of starting of synchronous motors
 14.18 Hunting
 14.19 Applications of synchronous motors
 Notes
 Acknowledgements
 Copyright
 Back Cover
Product information
 Title: Basic Electrical Engineering
 Author(s):
 Release date: April 2015
 Publisher(s): Pearson Education India
 ISBN: 9789332558311
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