Best Books for GATE, ISRO, PSUs

Friends, I am mentioning here some good books for GATE, ISRO, PSUs and for all type of competitive exams. These books are really very nice theoretically and conceptually. Among them some of are my favorite also. I have also given the pictures of their cover page so that it will be easy for you to recognize the books.

Friends, I am mentioning here some good books for GATE, ISRO, PSUs and for all type of competitive exams. These books are really very nice theoretically and conceptually. Among them some of are my favorite also. I have also given the pictures of their cover page so that it will be easy for you to recognize the books.

FOR ANALOG ELECTRONICS

Title: Electronic Devices and Circuit Theory, 9th Edition
Author: Robert L. Boylestad, Louis Nashelsky
Publication: Pearson
Contents: Diodes, Diode applications, BJT, DC Biasing-BJT, BJT AC Analysis, FET, FET Biasing, FET Amplifier, BJT & FET frequency response, Operational Amplifier, Power Amplifier, Linear-Digital ICs, Feedback & Oscillator circuits, Power Supplies (Voltage Regulators), Other two terminal devices, pnpn and other devices



FOR DIGITAL ELECTRONICS

Title: Digital Design, 4th Edition
Author: M. Morris Mano, Michael D. Ciletti
Publication: Pearson
Contents: Digital Systems and Binary Numbers, Boolean Algebra and Logic Gates, Gate-Level Minimization, Combinational Logic, Synchronous Sequential Logic, Registers and Counters, Memory and Programmable Logic, Design at the Register Transfer Level, Asynchronous Sequential Logic, Digital Integrated Circuits, Laboratory Experiments with Standard ICs and FPGAs, Standard Graphic Symbols

FOR VLSI

Title: CMOS Digital Integrated Circuits Analysis and Design, 3rd Edition
Author: Sung-Mo Kang, Yusuf Leblebici
Publication: TATA McGraw-Hill
Contents: Fabrication of MOSFETS, MOS Transistor, Modeling of MOS Transistors using SPICE, MOS Inverters: Static Characteristics, MOS Inverters: Switching Characteristics and Interconnect Effects, Combinational MOS Logic Circuits, Sequential MOS Logic Circuits, Dynamic Logic Circuits, Semiconductor Memories, Low-Power CMOS Logic Circuits, BICOMS Logic Circuits, Chip Input and Output Circuits, Design for Manufacturability, Design for Testabililty

FOR COMMUNICATION SYSTEM

Title: Principles of Communication Systems, 3rd Edition
Author: Herbert Taub, Donald Schilling, Goutam Saha
Publication: TATA McGraw-Hill
Contents: Introduction: Signal and Spectra, Random variables and Processes, Amplitude-Modulation Systems, Angle Modulation, Pulse Modulation and Digital Transmission of Analog Signal, Digital Modulation and Transmission, Mathematical Representation of Noise, Noise in Amplitude Modulation System, Noise in Frequency Modulation Systems, Phase Locked Loops, Optimal Reception of Digital Signal, Noise in Pulse Code Modulation and Delta Modulation Systems, Information Theory and Coding, Communication Systems and Component Noises, Spread Spectrum Modulation

FOR ELECTROMAGNETIC THEORY

Title: Electromagnetic Field Theory Fundamentals, 2nd Edition
Author: Bhag Singh Guru, Hüseyin R. Hiziroglu
Publication: Cambridge University Press
Contents: Electromagnetic Field Theory, Vector Analysis, Electrostatics, Steady Electric Currents, Magnetostatics, Application of static fields, Time-varying Electromagnetic Fields, Plane Wave Propagation, Waveguides and Cavity Resonators, Antennas, Computer-aided Analysis of Electromagnetic Fields

FOR MICROWAVE ENGINEERING

Title: Microwave Engineering, 3rd Edition
Author: David M. Pozar
Publication: Wiley India
Contents: Electromagnetic Theory, Transmission Line Theory, Transmission Lines And Waveguides, Microwave Network Analysis, Impedance Matching And Tuning, Microwave Resonators, Power Dividers And Directional Couplers, Microwave Filters, Theory And Design Of Ferrimagnetic Components, Noise And Active Rf Components, Microwave Amplifier Design, Oscillators And Mixers

FOR DIGITAL SIGNAL PROCESSING

Title: Digital Signal Processing, 4th Edition
Author: P.Ramesh Babu
Publication: SCITECH
Contents: Discrete-time Signals and Linear Systems, Z-Transform, Discrete Fourier Transform, Fast Fourier Transform, Infinite Impulse Response Filters, Finite Impulse Response Filters, Finite Word Length Effects in Digital Filters, Multirate Signal Processing, Statistical Digital Signal Processing, Applications of Digital Signal Processing, Digital Signal Processors

NETWORK THEORY

Title: Circuit Theory (Analysis and Synthesis)
Author: Abhijit Chakrabarti
Publication: Dhanpat Rai & Co

FOR OBJECTIVE BOOK

There are many books available in market for objective type questions and answers and MCQs. I am going to mention here some good books here. First I will write some good books exam wise and then I will mention in general.

FOR GATE: GK publication's book. The objective books prepared by MADE EASY. You can also buy chapter wise study materials for GATE prepared by MADE EASY (there are separate materials available for theory and MCQs).
 

FOR ISRO: Gateway to....ISRO by UPKAR publication

FOR PSUs AND OTHER COMPETITIVE EXAMS: The above mention books are also applicable for other competitive exams and PSUs. There is no such rule that GATE questions will come from GATE study materials only.  
But still some good books for this section are M. Handa Objectice book where you will get both theory and questions, a book for conventional and objective questions and answers by A.K. Maini from Khana Publishers.

Electronics & comm. Ques and Ans-1

Drift current in the semiconductors depends upon  [GATE 2011]

(a) only the electric field
(b) only the carrier concentration gradient
(c) both the electric field and the carrier concentration
(d) both the electric field and the carrier concentration gradient

Which of the following correctly depicts the capacitance of cylindrical capacitor

  

Which of the following can be ignored in a transmission line at radio wave frequency

(a) R and G           (b) G and L

(c) R and C           (d) L and C

Which of the following is correct

(a) In pre-emphasis magnitude of low frequencies are increased
(b) In de-emphasis magnitude of high frequencies are decreased
(c) In pre-emphasis magnitude of high frequencies are decreased
(d) In de-emphasis magnitude of low frequencies are increased

Which of the following logic family is used when the noise is very high

(a) DTL                        (b) TTL

(c) RTL                        (d) HTL

Which of the following statement is correct for a transistor
(a) Collector region is physically larger than emitter region
(b) Collector is heavily doped and emitter is lightly doped
(c) Emitter, Base is heavily doped and collector is lightly doped
(d) In a PNP transistor the collector collects the electrons from the base

In a PNP transistor under normal biased condition which of the following flows from emitter to base in forward biased junction

(a) Minority carrier hole
(b) Majority carrier holes
(c) Minority carrier electrons
(d) Majority carrier electrons

For a common base PNP transistor which of the following statement is correct

(a) Input resistance is greater than output resistance
(b) Output resistance is greater than input resistance
(c) Both input and output resistance are equal
(d) None of these

Which of the following correctly depicts the relation between I_CBO and I_CEO

In a NPN transistor when both the collector-base and emitter-base junction is forward-biased then the transistor operates in

(a) Active region           (b) Cut off region

(c) Saturation region      (d) Inverted region

Which of the following is correct

(a) Both UJT and FET are unipolar
(b) UJT is unipolar and FET is bipolar
(c) UJT is bipolar and FET is unipolar
(d) Both UJT and FET are bipolar

Answers

(1)-c Explanation: When a semiconductor is subjected to external electric field the charge carriers inside it attains certain velocity called drift velocity(V_d). The current due to this motion of charge carriers is called drift current. Drift current= qE(nμ_n+pμ_p). Where μ_n and μ_p are the mobilities of electrons and holes respectively. q is the charge of electron. E is the external electric field. p and n are concentration of charge carriers.

(2)-c Explanation: r₂ is the outer radius and r₁ is the inner radius of the capacitor
(3)-a Explanation: At radio wave frequency inductive reactance(L) becomes much greater than resistance(R) and capacitative susceptance(C) much grater than conductance(G). So R and G can be ignored. In this case the transmission line will be said as a losless transmission line.
(4)-b Explanation: In FM system at higher frequencies the noise becomes more. Hence pre-emphasis is used to increase the amplitude of higher frequencies before modulation. At the receiver end the amplitude of those higher frequencies is decreased to get back the original signal. This process at the receiver end is called de-emphasis.
(5)-d Explanation: High Threshold Logic(HTL) is used when the noise is very high. Another advantage of HTL is its increased noise margin. The disadvantage of HTL is its slow speed (HTL propagation delay-110ns, TTL propagation delay-10ns).
(6)-a Explanation: In a Bipolar Junction Transistor the collector region is physically larger than the emitter region. The doping concentration of Emitter > Collector > Base. In a PNP transistor the emitter is P type so it emits holes which is collected by the collector from the base.
(7)-b Explanation: Normal biased condition means emitter-base junction is forward biased and collector-base junction is reverse biased. So in a PNP transistor under normal biased condition holes flows from p-type emitter towards base.
(8)-b Explanation: From the input and output characteristic of the transistor it is confirmed that the output resistance is greater than the input resistance. You can know this from the slope of the curve. The more horizontal the curve the higher is the resistance.

(9)-c Explanation: We know the equation I_C=αI_E+I_CBO. Which implies that I_C=α(I_C+I_B)+I_CBO Now putting I_B=0 and solving for I_C we will get the answer.
(10)-c Explanation: In a transistor in the saturation region the base-emitter and collector-base region are forward biased.
(11)-a Explanation: see the following classification

Free Circuit Simulators

LTspice

It is a circuit simulator, SPICE simulator, schematic capture and waveform viewer. It is a very useful software for analog circuit simulation and also very easy to use. This will help you in transient, ac, noise and dc analysis as well as Fourier analysis. It is extensively used by various educational institution and students. 
Note: Download the software from the following download link. If it does not work then go to the website link and then manually go to the download page.
Download LTspice      Website

SimOne

This includes capture schematic editor which helps in schematic reading and editing, component selection, and simulation control of analog circuits. The features include DC analysis, AC analysis, Transient analysis, PSS analysis, Temperature sweep, Parameter sweep, Stability analysis.

Note: Download the software from the following download link. If it does not work then go to the website link and then manually go to the download page.
Download SimOne      Website

SapWin

This is a very useful tool which will help you to create the schematic of a linear analog circuit, to find network function in Laplace domain and to show the results in graphic form. In this tool you will get all passive and active, bipolar and two-port, linear components, including RLC elements, operational amplifiers and small-signal equivalent models of BJT and MOSFET transistors. This tool is available at University of Florence website.
Note: Download the software from the following download link. If it does not work then go to the website link and then manually go to the download page.
Download SapWin         Website

Micro-Cap

This is useful for both analog and digital circuit simulations and also it is SPICE compatible. This has been developed by Spectrum Software. It was first released as Micro-Cap package in 1982. Since that day it has been steadily expanded and improved. This is the first logic simulation system to be available in personal computers. The latest version is Micro-Cap 10.
Note: Download the software from the following download link. If it does not work then go to the website link and then manually go to the download page.
Download Micro-Cap     Website

Logisim

It is a digital circuit simulator having a graphical user interface similar to traditional drawing. One of its interesting feature is that it allows simulation of circuits as you build them. It has been written completely in JAVA programming language using Swing. It allows to build the circuits from truth tables using combinational analysis module.
Note: Download the software from the following download link. If it does not work then go to the website link and then manually go to the download page.
Download Logisim        Website 

5Spice

With this tool you can design spice models and sub-circuits easily with a GUI schematic editor. You can define, name and save unlimited numbers of analyses, each with a corresponding graph. It also has support for analysis of alternative designs. After installation on the right side of the screen you will get a toll bar from where you can drag and drop all the components like resistor, capacitor, diode, op-amp, logic gates, voltage source etc.

Note: Download the software from the following download link. If it does not work then go to the website link and then manually go to the download page.

Download 5Spice     Website

Envelope Detector

Envelope detector circuit uses a diode, a capacitor and a resistor and it is just like a half wave rectifier followed by a low-pass filter. It is a linear detector which takes high frequency RF signal as input and gives an output which is the envelope of the input signal. A diode detector is a type of envelope detector and is used for the detection of AM signal.

Circuit Operation

Here the input signal is rectified by the series diode D. The combination of capacitor C and resistor R behaves like a low-pass filter. The input signal contains both the original message and the carrier wave where the capacitor helps in filtering out the RF carrier waves. The capacitor gets charged during the rising edge and discharges through the resistor R in falling edge. Thus the capacitor helps in giving an envelope of the input as output.

Advantage

• This technique is highly used in AM receivers as it is very simple and cheap. 
• The circuit acts as a linear detector as the output varies as per the voltage of input and the distortion here is very less.

Disadvantage

• The circuit does not have an amplification capability to amplify the rectified signal. Amplification should be done by separate devices.
• Before giving input to the circuit the signal must be bandpass filtered otherwise the circuit will demodulate unnecessary signals.

Compared to advantages the disadvantages are very negligible and hence these circuits are extensively used for AM detection.