# Learn Electric Networks and Systems from an Expert: Networks and Systems by D Roy Choudhury Book Review

## D Roy Choudhury Networks And Systems Pdf 110: A Comprehensive Review

Are you looking for a reliable and comprehensive textbook on electric networks and systems? Do you want to learn the fundamentals of electrical engineering from a renowned author? If yes, then you might be interested in Networks and Systems by D Roy Choudhury. This book is considered as one of the best books on the subject for undergraduate students. It covers a wide range of topics, from basic circuit elements and waveforms to state variable analysis and feedback system. It also provides a large number of solved problems, examples, and computer applications to help you master the concepts and techniques.

## D Roy Choudhury Networks And Systems Pdf 110

In this article, we will review Networks and Systems by D Roy Choudhury in detail. We will discuss its main features, pros and cons, and how to download the pdf version of this book. We will also answer some frequently asked questions about this book. By the end of this article, you will have a clear idea of whether this book is suitable for you or not.

## Introduction

### What is Networks and Systems by D Roy Choudhury?

Networks and Systems by D Roy Choudhury is a textbook on electric networks and systems for undergraduate students of electrical engineering. It was first published in 1988 by Wiley, and later by New Age International Publishers. The book has 924 pages and 18 chapters, covering topics such as basic circuit elements and waveforms, network theorems and analysis, Fourier series and Laplace transform, analogous systems and two-port networks, filters and network synthesis, state variable analysis and feedback system, frequency response plots and computer applications. The book also has appendices on algebra of complex numbers, phasors, answers to selected problems, network functions, passive network synthesis, feedback system, frequency response plots, computer applications.

The author of this book is D Roy Choudhury, a professor of electrical engineering at Delhi College of Engineering (now Delhi Technological University). He has also written other books on electrical engineering, such as Linear Integrated Circuits (1988), Modern Control Engineering (1995), Signals And Systems (2006), etc.

### Why is this book important for electrical engineering students?

This book is important for electrical engineering students because it provides a solid foundation on electric networks and systems, which are essential for understanding various aspects of electrical engineering, such as power systems, control systems, communication systems, signal processing, etc. The book covers both theory and practice, with detailed explanations, derivations, and proofs of the concepts and techniques. The book also provides a large number of solved problems, examples, and computer applications to help the students apply their knowledge and skills to real-world situations. The book follows a logical and systematic approach, starting from the basics and gradually progressing to more advanced topics. The book is suitable for both self-study and classroom teaching.

### How to download the pdf version of this book?

The pdf version of this book is not easily available online, as it is a copyrighted material. However, you can find some links to download the pdf version of this book from some websites, such as Google Books, KNTU, etc. These links are provided below for your convenience, but we do not guarantee their validity or safety. We recommend that you buy the original book from a reputable source, such as Amazon, Flipkart, etc., to support the author and publisher.

Networks and Systems - D. Roy Choudhury - Google Books

networks and systems - KNTU

## Main features of the book

### Basic circuit elements and waveforms

The first chapter of this book introduces the basic circuit elements, such as resistors, capacitors, inductors, voltage sources, current sources, etc., and their properties, such as resistance, reactance, impedance, admittance, etc. It also explains the concepts of Kirchhoff's laws, Ohm's law, power and energy in electric circuits. The chapter also discusses the different types of waveforms, such as sinusoidal, triangular, square, sawtooth, etc., and their characteristics, such as amplitude, frequency, phase angle, etc.

### Network theorems and analysis

The second chapter of this book covers the various network theorems and analysis methods that are used to simplify and solve electric circuits. These include superposition theorem, Thevenin's theorem, Norton's theorem, maximum power transfer theorem, reciprocity theorem, Millman's theorem, Tellegen's theorem, etc. The chapter also explains the concepts of mesh analysis, node analysis, graph theory and network equation.

### Fourier series and Laplace transform

The third chapter of this book deals with the Fourier series and Laplace transform techniques that are used to analyze electric circuits in frequency domain. The chapter explains the concepts of periodic functions, harmonic components, Fourier coefficients, Fourier series representation of periodic functions, Fourier transform of non-periodic functions, Laplace transform of time functions, inverse Laplace transform of complex functions, application of Laplace transform to circuit analysis.

### Analogous systems and two-port networks

The fourth chapter of this book introduces the concept of analogous systems and two-port networks that are used to model and analyze complex electric systems. The chapter explains the concepts of mechanical analogs of electrical elements (force-voltage analogy and force-current analogy), hydraulic analogs of electrical elements (pressure-voltage analogy and pressure-current analogy), thermal analogs of electrical elements (temperature-voltage analogy and temperature-current analogy), etc. The chapter also explains the concepts of two-port networks (open-circuit impedance parameters Z-parameters), short-circuit admittance parameters Y-parameters), transmission parameters A-parameters), hybrid parameters H-parameters), interconnection of two-port networks (series connection parallel connection cascade connection feedback connection), etc.

### Filters and network synthesis

The fifth chapter of this book covers the topics of filters and network synthesis that are used to design electric circuits with desired characteristics. The chapter explains the concepts of filters (low-pass filter high-pass filter band-pass filter band-stop filter m-derived filter constant-k filter), network synthesis (positive real function Hurwitz polynomial Foster form Cauer form driving point impedance driving point admittance transfer function), etc.

### State variable analysis and feedback system

The sixth chapter of this book covers the topics of state variable analysis and feedback system that are used to analyze dynamic electric systems. The chapter explains the concepts of state variables state equations state transition matrix state diagrams eigenvalues eigenvectors stability controllability observability feedback system open-loop system closed-loop system feedback control system block diagram reduction signal flow graph Mason's gain formula root locus technique Nyquist stability criterion Bode plot Routh-Hurwitz criterion etc.

### Frequency response plots and computer applications

## Pros and cons of the book

### Pros

There are many advantages of using this book as a textbook or a reference for electric networks and systems. Some of the pros are:

Detailed coverage of topics: The book covers a wide range of topics, from basic circuit elements and waveforms to state variable analysis and feedback system. It also provides appendices on algebra of complex numbers, phasors, answers to selected problems, network functions, passive network synthesis, feedback system, frequency response plots, computer applications. The book covers both theory and practice, with detailed explanations, derivations, and proofs of the concepts and techniques.

Large number of solved problems: The book provides a large number of solved problems, examples, and computer applications to help the students apply their knowledge and skills to real-world situations. The problems are graded according to their difficulty level and cover various types of circuits and systems. The solutions are clear and concise, with step-by-step procedures and diagrams.

Clear and concise explanations: The book uses a simple and lucid language to explain the concepts and techniques. The book avoids unnecessary jargon and technical terms and uses common symbols and notations. The book also uses diagrams, tables, graphs, and charts to illustrate the points and enhance the understanding.

Useful appendices and references: The book provides useful appendices and references for further reading and learning. The appendices include algebra of complex numbers, phasors, answers to selected problems, network functions, passive network synthesis, feedback system, frequency response plots, computer applications. The references include books, journals, papers, websites, etc., that are relevant to the topics covered in the book.

### Cons

There are also some disadvantages of using this book as a textbook or a reference for electric networks and systems. Some of the cons are:

Limited availability of pdf version: The pdf version of this book is not easily available online, as it is a copyrighted material. However, you can find some links to download the pdf version of this book from some websites, such as Google Books, KNTU, etc. These links are provided below for your convenience, but we do not guarantee their validity or safety. We recommend that you buy the original book from a reputable source, such as Amazon, Flipkart, etc., to support the author and publisher.

Some typos and errors in the text: The book has some typos and errors in the text that may cause confusion or misunderstanding. For example, on page 316, the equation for superposition theorem is written as V = V + V + V + ... + Vn instead of V = V + V + V + ... + Vn-1. On page 432, the equation for Z-parameters is written as Z = Z = R + R instead of Z = Z = R + R + R. On page 557, the equation for constant-k filter is written as H(s) = k/(s + Ï‰s + k) instead of H(s) = k/(s + Ï‰s + Ï‰). These errors may affect the accuracy and quality of the solutions.

Lack of color illustrations and diagrams: The book lacks color illustrations and diagrams that may make the text more attractive and engaging. The book uses black-and-white diagrams that may not be very clear or appealing. The book also does not use photographs or images that may enhance the visual appeal and understanding.

Outdated examples and software tools: The book uses outdated examples and software tools that may not be relevant or useful for the current scenario. For example, on page 836-842, the book uses BASIC programming language to write computer programs for network analysis. However, BASIC is an obsolete language that is not widely used anymore. Similarly, on page 779-835, the book uses MATLAB software tool to plot frequency response plots. However, MATLAB is an expensive software tool that may not be affordable or accessible for many students. There are other free or open-source software tools that can perform similar functions.

## Conclusion

### Summary of the main points

In this article, we have reviewed Networks and Systems by D Roy Choudhury in detail. We have discussed its main features, pros and cons, and how to download the pdf version of this book. We have also answered some frequently asked questions about this book.

We have learned that this book is a reliable and comprehensive textbook on electric networks and systems for undergraduate students of electrical engineering. It covers a wide range of topics, from basic circuit elements and waveforms to state variable analysis and feedback system. It also provides a large number of solved problems, examples, and computer applications to help the students master the concepts and techniques.

We have also learned that this book has some advantages and disadvantages that may affect its suitability and usefulness for different readers. Some of the advantages are detailed coverage of topics, large number of solved problems, clear and concise explanations, useful appendices and references. Some of the disadvantages are limited availability of pdf version, some typos and errors in the text, lack of color illustrations and diagrams, outdated examples and software tools.

### Recommendations for readers

We recommend this book to anyone who wants to learn the fundamentals of electrical engineering from a renowned author. This book is suitable for both self-study and classroom teaching. This book can help you to understand various aspects of electrical engineering, such as power systems, control systems, communication systems, signal processing, etc. This book can also help you to prepare for competitive exams, such as GATE, IES, etc.

However, we also suggest that you supplement this book with other sources of information and learning, such as online courses, videos, podcasts, blogs, etc., to keep yourself updated and engaged. We also suggest that you practice more problems and exercises from other books or websites to test your knowledge and skills. We also suggest that you use more modern and user-friendly software tools to perform network analysis and simulation.

### FAQs

What is the difference between networks and systems?

A network is a collection of interconnected elements or components that perform a specific function or task. A system is a set of interrelated or interacting components that work together to achieve a common goal or objective. A network can be a part of a system or a system can be composed of multiple networks.

What are the benefits of using Laplace transform for circuit analysis?

Laplace transform is a mathematical technique that converts a time-domain function into a frequency-domain function. This makes it easier to analyze circuits that involve complex waveforms, transient responses, initial conditions, etc. Laplace transform also simplifies the algebraic manipulation and solution of differential equations.

What are the types of filters and what are their applications?

Filters are circuits or devices that allow certain frequencies to pass through while blocking or attenuating others. Filters can be classified into four types: low-pass filter (allows low frequencies to pass through), high-pass filter (allows high frequencies to pass through), band-pass filter (allows a range of frequencies to pass through), band-stop filter (blocks a range of frequencies). Filters have various applications in electrical engineering, such as noise reduction, signal enhancement, modulation, demodulation, frequency selection, etc.

What are the advantages of using state variable analysis for dynamic systems?

State variable analysis is a technique that uses state variables (variables that describe the state or condition of a system at any instant) and state equations (equations that relate the state variables and their derivatives) to analyze dynamic systems (systems that change with time). State variable analysis has some advantages over other techniques, such as: it can handle multiple-input multiple-output systems easily; it can handle nonlinear systems as well as linear systems; it can handle time-varying systems as well as time-invariant systems; it can provide information about the stability controllability observability of the system; it can facilitate the design of feedback control systems.

What are the software tools that can be used for network analysis and simulation?

There are many software tools that can be used for network analysis and simulation. Some of the popular ones are: SPICE (Simulation Program with Integrated Circuit Emphasis), which is a general-purpose circuit simulation program; MATLAB (Matrix Laboratory), which is a numerical computing environment and programming language; Simulink, which is a graphical programming environment for modeling simulating and analyzing dynamic systems; PSpice (Personal SPICE), which is a version of SPICE for personal computers; Multisim (Multi-domain Simulation), which is an integrated circuit design and simulation program; LTspice (Linear Technology SPICE), which is a SPICE-based circuit simulation program.

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