A textbook of electrical engineering / J.B. Gupta.

Dr. J.B. Gupta is an Accounting and Finance Educator who currently resides in New Delhi, India. Some of his other works include Basic Electrical and Electronics Engineering, Electronic Devices and circuits, A Course In Electronics and Electrical Measurements and Instrumentation 1st Edition, and Electrical Science (I.P.).

Includes index.

Introductory concepts -- Nature of electricity -- Electric current -- Electromotive force and potential difference -- Resistance -- Ohm's law -- Laws of resistance -- Conductance and conductivity -- Types of supply -- Resistance variation with temperature -- Temperature coefficient of resistance -- IS system of units -- Work, power and energy -- Electrical units of work, power and energy -- Conversion of electrical units into mechanical and thermal units or vice versa -- Heating effect of electric current -- Joule's law of electric heating -- Series circuits -- Parallel circuits -- Current distribution in parallel circuits -- Series-parallel circuits -- Magnetics field due to a current carrying conductor -- Determination of direction of magnetic field around a current carrying conductor -- Magnetic field due to a circular loop -- Solenoid -- Force on a current carrying conductor lying in the magnetic field -- Highlights -- Exercises -- Short type questions with answers -- Problem -- Unit-I: DC circuit analysis and network theorems -- DC circuit analysis and network theorems -- Concept of network -- Single-and multi-mesh network -- Active and passive elements -- Resistance -- Capacitance -- Inductance -- Summary of relationships for the parameters -- Voltage and current sources -- Source equivalence or transformation -- Solution of simultaneous equations -- Kirchhoff's laws -- Network theorems -- Superposition theorem -- Maxwell circulating current theorem -- Node-voltage theorem or nodal analysis -- Thevenin's theorem -- Norton's theorem -- Conversion of Thevenin's equivalent into Norton's equivalent and vice versa -- Maximum power transfer theorem -- Network reduction by delta-start transformation or vice versa -- Highlights -- Exercises -- Short answer type questions with answers -- Problems -- Unit-II: Steady-state analysis of single phase AC circuits -- AC fundamentals -- Introduction -- Generation of alternating EMF -- Sinusoidal quantities (EMF, voltage or current) -- Terminology -- Determination of maximum value and frequency from EMF or current equations -- Plotting of sine waveform -- Average and effective (RMS) values of alternating voltage current -- Average and effective (RMS) values of sinusoidal current and voltage -- Form factor and peak factor -- RMS, value, average value, peak factor and form factor of half-wave rectified alternating current -- RMS value, average value, peak factor and form factor of square waveform -- RMS value, average value, form factor and peak factor of a triangular waveform -- Graphical or phasor representation of alternating 9sinusoidal) quantities (voltages and currents) -- Phasor diagram using RMS values -- Phase and phase angle -- Phase difference -- Conventions for drawing phasor diagrams -- Addition and subtraction of alternating quantities -- Highlights -- Exercises -- Short answer type questions with answers -- Problems -- Single phase series circuits -- Introduction -- Pure resistive circuits -- Pure inductive circuits -- Pure capacitive circuits -- Resistance-inductance (R-L) series circuit -- Apparent power, true power, reactive power and power factor -- Q-factor of coil -- Power in iron-cored choking coil -- Resistance-inductance-capacitance (R-L-C) series circuit -- Highlights -- Exercises -- Short answer type questions with answers -- Problems -- Complex notations and circuit analysis -- Introduction -- Symbolic form -- Conjugate complex number -- Trigonometrical form of phasor representation -- Polar form of phasor representation -- Exponential for of phasor representation -- Addition and subtraction of phasors -- Multiplication and division of phasors -- Powers and roots of phasor --Phasor algebra applied to single phase series circuits -- Power determination -- Conjugate method of power determination -- Highlights -- Exercises -- Short answer type questions with answers -- Problems -- Single phase parallel and series-parallel circuits -- Parallel circuits -- Phasor methods -- Admittance method -- Symbolic or j-method -- Power factor improvement -- Highlights -- Exercises -- Problems -- Resonance in R-L-C circuits -- Introduction -- series or voltage resonance -- Parallel or current resonance -- Comparison between voltage resonance and current resonance -- Highlights -- exercises -- Short answer type questions with answer -- Problems -- Unit-III: Three-phase AC circuits and measuring instruments -- Three-phase AC circuits -- Introduction -- Generation of EMFs -- Double subscript notation -- Phase sequence -- Interconnection of three phases -- Star or wye (Y)-connected system -- Mesh or delta (A)-connected system -- Comparison between star and delta systems -- Conversion of balanced load system from star to delta and vice versa -- Balance parallel loads -- Measurement of power in three-phase circuits -- Highlights -- Exercises -- Short answer type questions with answers -- Problems -- Measuring instruments -- Introduction -- Classification of measuring instruments -- Types of secondary instruments -- Principle of operation of electrical measuring instruments -- Essentials of indicating instruments -- Ammeters and voltmeters -- Types of instruments -- Errors common to all types of instruments -- Moving iron instruments -- Moving coil instruments -- Extension of instrument range -- Dynamometer type wattmeter -- Energy meters -- Introduction type energy meter -- Highlights -- Exercises -- Short answer type questions with answers -- Problems -- Unit-IV: Introduction to earthing and electrical safety, magnetic circuit and single-phase transformers -- Introduction to earthing and electrical safety -- General -- Earthing -- Definitions -- Effects of electric currents on human body -- Earthing conductor -- Methods of earthing -- Protective devices for wiring installations and motors -- Fuses -- Fuse units -- Protection of building against lightning -- Highlights -- Exercises -- Short answer type questions with answer -- Magnetic circuits -- Introduction -- Magnetisation or B-H curves -- Magnetic hysteresis -- Magnetically induced EMFs 9or voltages) -- Dynamically induced EMF -- Statically induced EMF -- Dot convention -- Mutual coupling in a simple magnetic circuit -- Coefficient of coupling -- Eddy currents and eddy current losses -- Highlights -- Exercises -- Short answer type question with answers -- Problems -- Single-phase transformers -- Introduction -- Operating principles -- Transformer ion DC Ideal transformer - EMF equation -- Voltage and current transformation ratios -- Effects of voltage and frequency variations -- Transformer on no load -- Transformer on load -- Resistance and leakage reactance -- Phasor diagram of actual transformer on load -- Equivalent resistance and reactance -- Equivalent circuit of a transformer -- Voltage regulation -- Transformer losses -- Testing of transformers -- Transformer efficiency -- All-day efficiency (or energy efficiency) -- Transformer construction -- Auto-transformer -- Highlights -- Exercises -- Short answer type questions with answers -- Problems -- Unit-V: Electrical machines -- DC machines-I (Generators) -- Principles of electromechanical energy conversion -- DC machines -- Essential parts of a DC machine -- Simple loop generator -- EMF equation -- Types of DC generators -- Magnetisation curve -- External or load characteristics of DC generators -- Building up of voltage of a shunt generator at no load -- Conditions for self excitation and causes of failure to build up voltage -- Applications of DC generators -- Highlights -- Exercises -- Short answer type questions with answers -- Problems -- DC machine-II (motors) -- Introduction -- Working principle of motor -- Importance of back EMF -- Power relationship in DC motor -- Types of DC motors -- Direction of rotation of DC motors -- Speed equation -- Speed regulation -- Torque -- Armature torque -- Shaft torque -- Operating characteristics of DC motors -- Operating characteristics of DC series motors -- Operating characteristics of DC shunt motors -- Operating characteristics of compound wound DC motors -- Speed control of DC motors -- Power losses -- Efficiency of DC machines -- Condition for maximum efficiency -- Applications of DC motors -- Highlights -- Exercises -- Short answer type questions with answers -- Problems -- Three-phase induction motor -- Introduction -- Construction -- Types of 3-phase induction motors -- Rotating magnetic fields -- Principle of operation -- Slip -- Frequency of rotor current (or EMF) -- Rotor EMF -- Rotor current and power factor -- Rotor torque -- Torque-slip and torque-speed curves -- Effect of change in supply voltage on torque and slip (or speed) -- Torque-speed curve and operating region -- Starting of 3-phase squirrel cage induction motors -- Starting of 3-phase slip-ring induction motors -- Advantages, disadvantages and applications of induction motors -- Comparison of squirrel cage and slip-ring (phase wound) induction motors -- Highlight -- Exercises -- Short answer type questions with answer -- Problems -- Single-phase induction motor -- Introduction -- Principle of operation of single-phase induction motors -- Starting methods and types of single-phase induction motors -- Resistance-start single-phase induction motor -- Capacitor-start single-phase induction motor -- Capacitor-start, capacitor-run single-phase induction motor -- Permanent capacitor single-phase induction motor -- Shaded-pole motor -- Universal motors -- Stepper motor -- Highlights -- Exercises -- Short answer type questions with answers -- Three-phase synchronous machines -- Introduction -- Construction -- Production of Sinusoidal alternating EMF -- Frequency of induced EMF -- EMF equation -- Synchronous motor -- Principles of operation of synchronous motor -- Effects of load on a synchronous motor -- Effect of varying excitation on armature current and power factor -- Main characteristics of synchronous motors -- Merits and demerits of synchronous motors -- Synchronous condenser -- Comparison of 3-phase synchronous and induction motors -- Applications of synchronous motors -- Highlights -- Exercises -- Short answer type questions with answers -- Experiments -- Examination papers -- Index