Exam

A list of the best books for the BEL Exam is listed below;
1- Books for BEL Exam Aptitude papers:
1- Guide to general aptitude test by GK Publisher
2- S. hand A modern approach to verbal and non-verbal reasoning by R. S. Aggarwal
3- S. Hand Quantitative Aptitude for competitive examination by R. S. Aggarwal
2- Books for BEL Exam Technical paper:
1- Electronics Engineering by Mittal GK Publishers
2- Mechanical engineering by Mittal GK Publishers
3- NTPC Computer Science/Information technology by Mittal GK Publishers
4- Galgotia question bank in electrical and Electronics Engineering by Harish C. Rai and Ashok Raj
3- Other Recommended Books:
1- Linear Circuits Analysis by DeCarlo Lin
2- Network Analysis by M.E Van Valkenburg
3- Modern Control Engineering by Katsuhiko Ogata
4- Principle of digital Electronics by Malvino & Leach
5- Electric Circuits and Networks by K. S. Suresh Kumar
6- Digital Logic and Computer Design by M Morris Mano
7- A Text of Electrical Technology by B. L. Theraja, and A. K. Theraja
8- Microprocessor Architecture, Programming, and Applications by Ramesh S. Gaonkar
9- Microcomputers and Microprocessors: Interfacing, Programming, and Troubleshooting by John E. Uffenbeck. For more exam details, you may visit the Shiksha BEL exam page. (https://www.shiksha.com/exams/bel-exam). I hope this will help you.

The BEL syllabus includes English Logical Reasoning, General Knowledge, and Technical subjects.
1- Logical Reasoning: Cause and Effect, Clocks, Coding-Decoding, Critical path, Reasoning Analogies, Artificial Language, Blood Relations, Calendars, Mirror and Water Images, Odd One Out, Alphanumeric series, Cubes and cuboids, Data Sufficiency, Decision Making, Deductive Reasoning/Statement Analysis, Dices, Directions, Embedded Images, Figure Matrix, Input-Output.
2- English Syllabus: Reading Comprehension, Cloze Test, Article Rules, Direct Indirect Speech Rules, Sentence Rearrangement Para jumbles, Rules For Tenses, Rules For Prepositions, List of Prepositions, Rules, and List of Conjunctions, Letter Writing Format, Precis Writing, List of Homophones/Homonyms, List of Synonyms and Antonyms, Idioms And Phrases, Spotting the Error, Adjective Degree Of Comparison Rules, Sentence Correction Questions, Adjective Degree Of Comparison Rules, Active And Passive Voice Rules, List of One-Word Substitutions, Sentence Correction Questions.
3- General Knowledge: Culture, Religion, Animal, Flag, History, Anthem, Awards, Authors, Abbreviations, Discoveries, Diseases and Nutrition, Song, Flower, Important National Facts, Heritage and Arts, Dance, Currencies, Bird.

The BEL deputy engineer Entrance Exam is an objective type test having MCQs on the following:
1- General Aptitude
2- Comprehension/ Passage based questions
3- Data Interpretation
4- Logical Reasoning
4- General Knowledge questions
5- Technical Questions from subjects :
Engineering Mathematics: Linear Algebra Probability Calculus, Statistics Differential Equations Numerical Methods, and Transform Theory. Electronics and Communication Engineering: VLSI Design, Electronic Devices and Circuits, Bharat Digital Signal Processing, Digital Electronics, Electrical Technology, Control Engineering, Digital Communication, Principles of Communication, Industrial Instrumentation, Microcontrollers and Applications, Optical Communication, Embedded Systems Design, Power Electronics, Electromagnetic Fields, Network Analysis, Signals and Systems, Advanced Antenna Theory, Digital Image Processing, Electronic Measurement & Instruments, Analog Circuits, and Radars. The number of questions may vary but generally, the General aptitude has around 30 questions and technical questions are usually straightforward. The main focus for ECE is on Digital electronics, especially the logic family. Also in Electro Magnetic Theory most of the questions are from Antenna and Waveguide Theory.

A list of the best electrical branch books for the BEL examinations is listed below;
General Knowledge;
1- Manorama Year Book by Mammen Mathew
2- Lucent General Knowledge by Dr. Binay Karna
3- General Knowledge by Manohar Pandey
General Aptitude;
1- A Modern Approach to Logical Reasoning by R S Aggrawal
2- Analytical Reasoning by MK Pandey
3- A New Approach to Reasoning by B. S Sijwali.
Electrical Engineering;
1- Objective Electrical Technology by VK Mehta & Rohit Mehta
2- Question Bank for Electrical Engineering by J. B Gupta
3- A Handbook of Electrical Engineering by Arihant Publications
4- Electric Circuits and Networks by KS Suresh Kumar
5- A Text of Electrical Technology by BL Theraja and AK Theraja
6- Linear Circuits Analysis by DeCarlo Lin
7- Microcomputers and Microprocessors: Programming, Interfacing, and Troubleshooting by John E. Uffenbeck. I hope this will help you.