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UGC-NET

Electronics Science

(Chapter-wise Solved Questions)

SONAL SAXENA

M.Sc. (Electronics)ISO 9001:2015 CERTIFIED

© Author

Nopar toft hispu blication maybereproduced,stor edin aretr ievalsystem,ortransmitt edinanyfo rm orby any

means,electr onic,mechanical,phot ocopying, recordingand/orot herwisewithou tthepriorwrittenp ermissionofthe

authorandt he publis her.

FirstEdi tion:2019

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Preface

Thisbooki smea ntfor UGC-NETELEC TRONICSSCIENCEEXAM. Thebook hasbeen writte naccordingtol atestpatternoftheNE TE XAM.Thisbook offersa goodoppor tunitytothestudentwhoar eappear ingint hisentrance exam inatio nto gainat hor oughknowledgean dunderstandingoftheco nceptsa ndapplications, andthi sbookusesar ightm ix of fundamentalp rincipl esan dconcepts,and illustrationswhichhighlight stheapp licationofthesec oncep ts,andexercisefor practice.Ihopeth at thestudents whoarep repa ringforthecomp etitive examinationswillbebenefited.

Salientfeatur esofthebookare:

2.P reviousyearpap ersare alsoavailable attheendo ftheboo kforpractice.

3.Al lchap tershavebeendivi dedintosma llertop icsforeasylearn inga nd

understanding.

4.E achchapterh asexercise shavin gquestionsgivenasp erthelatestpatt ern.

5. Theb ookisalso us efulforst udentspreparingfor vario usnationaland

statelevelexa mina tionsotherthanNET. I amtha nkfultotheHim alay aPublishingHo usePvt.Ltd.fort akinginte rest in thepu blicationofthisbook. Everysugg estionsregardingthefurthe rimprovementofth ebooka recordially invited.

SONALSA XENA

1. Solvedques tionsof2012-

18 toa nalysetherealpatt ernan dtoput yourself in therea lpractice.

Contents

Chapter

No.TopicPage No.

Unit I: Physical Electronics and Electronic Devices

A. Basic Semiconductor Physics................................................................................3-18

B. P-N Junction Diodes and Special Diodes........................................................19-32

C. Power Switching Devices

D. Basics of FET and BJT...........................................................................................39-51

Previous year Questions (NET)............................................................................52-57

Multiple Choice Questions

Unit II: Analog Electronic Circuits

A. Diodes Applications................................................................................................71-74

B. Bipolar Junction Transistor Analysis (BJT)

C. FET and MOSFET Analysis..................................................................................84-92

D. Frequency Response of Amplifier and Filters..............................................93-106

E. Feedback in Amplifiers

F. Oscillators.............................................................................................................110-117

G. Operational Amplifier........................................................................................118-126

H. Power Amplifier and Regulators

Previous Year Questions (NET)......................................................................134-136

Multiple Choice Questions..............................................................................137-142

Unit III: Digital Electronic Circuits

A. Number Systems.................................................................................................145-156

B. Boolean Algebra

C. Logic Gates............................................................................................................168-169

D. Combinational Logic Circuits.........................................................................170-180

E. Sequential Circuits.............................................................................................181-192

F. Logic Families

G. Memories................................................................................................................195-196

H. ADC and DAC.......................................................................................................197-203

Previous Year Questions (NET)

Multiple Choice Questions..............................................................................207-211

Unit IV: Control Systems

A. Basics of Control Systems...............................................................................215-215

B. Block Diagrams and Signals Flow Graph..................................................216-219

C. Compensators and Controlers

D. Time Domain analysis.......................................................................................225-238

E. Stability Analysis................................................................................................239-240

F. Root Locus

G. Frequency Response Analysis........................................................................243-247

Previous Year Questions (NET)......................................................................248-254

Multiple Choice Questions

Unit V: Microwave Engineering

A. Introduction to Microwaves.............................................................................265-266

B. Microwave Components

C. Solid State Microwave Devices.......................................................................273-287

D. Microwave O-type and M-type Tubes..........................................................288-294

Multiple Choice Questions

Unit VI: Communication Systems

A. Introduction..........................................................................................................301-302

B. Amplitude Modulation and Demodulation

C. Angle Modulation and Demodulation

D. Digital Communications...................................................................................324-338

E. Information Theory

F. Optical Communication

Previous Year Question (NET)........................................................................353-353

Multiple Choice Questions

Unit VII: Network Theory

A. Circuit Elements.................................................................................................359-360

B. Network Laws and Theorems

C. Graph Theory.......................................................................................................367-369

D. Laplace Transform Analysis and Transient Response...........................370-377

E. Two-port Network

Previous Year Questions (NET)......................................................................383-385

Multiple Choice Questions..............................................................................386-388

Unit VIII: Computer Engineering

A. 8085 Microprocessor.........................................................................................391-405

B. 8086 Microprocessor.........................................................................................406-413

Previous Year Questions (NET)

Multiple Choice Questions..............................................................................416-417

Question Papers.................................................................................................419-558

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