GATE

The PSUs job salary through GATE ranges between INR 7,00,000 PA to INR 18,00,000 PA and varies with the respective PSU's guidelines. This salary range is applicable for the candidates selected under the designations such as Graduate Trainee (get), Executive Trainees (ET), Engineer Trainee (ET), Management Trainee (MT), and Trainee Engineers (TE). Also, the Salary range varies from the category of PSU I. e. whether it's a MAHARATNA, NAVRATNA, MINI RATNA, and also whether you are taken up as Graduate Trainee or an Officer. So, Case-1, If you are selected as Officer;
For MAHARATNA like IOCL, ONGC and the initial salary has a basic of INR 24900, and DA, TA, and Cafeteria allowance take up this salary amount to nearly INR 55,000 to INR 60,000 per month in hand after all deductions. Also, performance-related pay (PRP) is around IJNR 80,000 to INR 1,00,000 which is paid at the end of one service year. MAHARATNA like BHEL has first-year basic pay of INR 20,600 and 2nd year onwards INR 24,900 (same as IOCL) Meanwhile, for SAIL it is INR 16,400 as basic pay during the first year. Case-2, If recruited as Graduate Trainee;
You will get only basic pay of INR 24900 (in IOCL). There will be no extra allowance like DA, TA, HRA, etc. But it is not frequent. The highest package that you can get from any PSU right after recruitment through GATE (Till date since the 7th pay commission for PSU is about to come) - ONGC and IOCL
CTC = INR 12 LPA (As notified in their GATE 2017 advertisement) and In hand= INR 7.2 LPA (approximately)
The average salary for MAHARATNA or NAVRATNANA is INR 5.5 LPA- INR 6.5 LPA (in hand). I hope this will help you.

The ESE exam is a little more complex than the GATE exam.
However, the GATE exam pattern:
Examination Mode: Computer-Based Test (CBT)
Duration: 3 Hours
Number of Subjects: 27
Sections: General Aptitude (GA) + Candidates Selected Subject
Type of Questions: (A) Multiple Choice Questions (MCQ) (B) Remaining types: MSQ) and NAT Questions for testing these abilities: Recall, Comprehension, Application, Analysis, and Synthesis
Number of Questions: 10 (GA) + 55 (subject) = 65 Questions
Distribution of Marks in all Papers EXCEPT papers AR, CY, EY, GG, M.A. PH, XH, and XL
General Aptitude: 15 Marks + Engineering Mathematics: 13 Marks + Subject Questions: 72 Marks = Total: 100 Marks
Distribution of Marks in papers AR, CY, EY, GG, M.A. PH, XH, and XL
General Aptitude: 15 Marks + Subject Questions: 85 Marks = Total: 100 Marks
Marking Scheme: All of the questions will be 1 mark or 2 marks.
Exam pattern of the ESE exam:
Exam Mode: Offline
Selection Process
1- Prelims
2- Mains
3- Interview
Number of Papers
Prelims - 2
Mains - 2
Total Marks
Prelims - 500 Marks
Mains - 600 Marks
Interview - 200 marks
Opportunities after GATE Higher studies (M.Tech Ph.D. Research, work in PSUs, etc.
Opportunities after ESE:
1- At the time of joining work as Assistant Executive Engineer or Assistant Director
2- After the experience of 3 to 4 years, work as an executive engineer, director, or work manager.
3- After the experience of 8 years, work as deputy general manager or joint director
4- After the experience of 13 years, work as joint general manager or chief engineer of level 2.
5- After the experience of 20 years, work as chief engineer or additional general manager.
6- After the experience of 30 years, you work as a senior general manager or engineer-in-chief.
7- After the experience of 34 years you become a chairman or managing director of a governmental organization.
I hope this will help you.

Check below the list of books that help in the preparation for ESE/IES ECE Exam:
1- Network Analysis by Van Valkenburg and Chakrabarti.
2- Electromagnetic Waves & Radiating Systems by Jardon & Balmain and JD Kraus.
3- Integrated Circuits by K. R. Botkar.
4- Op. Amps & Linear Integrated Circuit by Gayakwad.
5- Digital Logic & Computer Design by Morris Mano.
6- Automatic Control System by Benjamin C. Kuo and B. S Make
7- Control System engineering. By I. G. Nagrath & M. Goal
8- Principle of Communication System by Taub & Schilling, J. B Gupta, and A. Bruu Carlson.
9- Integrated Electronics by Jacob Milman & C. Halkias and Millman & Grabel
10- Digital Principles and Applications (SIE) by Leach & Malvino
11- Network and Systems by D. Roy Choudhary
12- Signals and System by Oppehum, Willsky & Nacob, and Sanjay Sharma.
13- Problems Amp Solutions Control System by Jairath A. K.
14- Electronics & Communication Engineering by Arihant Publication
15- Detailed Solutions in Electronics & Communication for Competitions by S. K. Karna
16- Electronics Engineering Handout by Made Easy Publication. Books for ECE GATE:
1- Network Theory
Engineering Circuit Analysis by William H. Hayt
Network Analysis by Mac Van Valkenburg
2- Engineering Mathematics
Higher Engineering Mathematics by B. S. Grewal
GATE Engineering Mathematics: Multiple Choice Questions by R. K. Kanodia
3- Analog Circuits
Microelectronic Circuits: Theory and Applications by Adel S. Sedra and Kenneth Carless Smith
Op. Amps & Linear Integrated Circuit by Ramakant Gayakwad
4- Digital Electronics
Digital Design by M. Morris Mano
Modern Digital electronics by R P Jain
Microprocessor Architecture, Programming, and Applications with 8085 by Ramesh Gaonkar
5- Automatic Control Systems by Benjamin C Kuo
6- Control Systems Engineering by M Goal and I. J. Nagrath
7- Principles of Electromagnetics by Matthew N. O. Sadiku
8- Semiconductor Physics and Devices by Donald Neamen
9- Signals and Systems by Alan V. Oppenheim, Allan S. Willsky, S. Hamid Nawab
10- Digital and Analog Communications by B. P. Lathi
I hope this will help you.

Apart from ESE, GATE, and PSUs many exams are held to recruit in various organizations in India, such as -
1- Railway recruitment board (SSE & JE )- RRB takes exams for junior engineers and senior section engineers. Although it is a group C job after 12 to 13 years of experience with time-to-time promotions you will be promoted to a group A job equivalent to an ESE/IES officer.
2- SSC-JE: it is a group B job and it is conducted for the recruitments in various posts in various departments such as Military Engineering Services (MS). you will be subordinate to an ESE/IES officer.
3- NPCIL: A subsidiary of Bhabha Atomic Research Center. Every year they conduct their own exams for recruitment usually in the month of June and July.
4- SAIL: It also conducts its own exam for recruitment.
5- Visakhapatnam - It is one of the units of Rashtriya Ispat Nigam Limited (RINL).
6- DMRC/LMRC/NMRC/BMRC: It conducts exams for different technical posts.
7- AFCAT: This test is conducted by the IAF for the selection of officers in various branches of the Indian Air Force.
8- Some other PSUs are BEL, BSNL, HAL, MTNL, SCIL, RBI, EII, BARC, ECI, etc. Other than these exams State Engineering Services exams are conducted from time to time by different states.

The difference between a GATE score and GATE marks:
1- The difference between GATE marks and GATE scores is that GATE marks are calculated on a scale of 100, whereas GATE scores are calculated on a scale of 1000. The GATE Score is calculated on the basis of normalized marks and taking actual marks.
2- The GATE Score is widely accepted by the Public Sector Undertaking bodies as well as the Indian Institutes of Technology, Indian Institute of Science, and National Indian Institutes of Technology at the time of admission into higher studies. Moreover, some foreign universities accept GATE scores as well.
3- The GATE marks are calculated on the basis of weightage on each ques and the number of ques. The total number of ques asked in the Graduate Aptitude Test in Engineering Written test is 65. There are 3 types of ques that are MCQs, Multiple Selected Questions, and NAT ques.
4- There is a total of 100 marks. The negative marks are only applicable to Multiple Choice Questions. One-third of the marks allocated to each MCQ will be deducted. GATE marks are the raw or actual marks that students received in the examination based on their performance.