Below are the important subjects for GATE ECE

1- Network Theory

2- Signals & Systems

3- Control Systems

4- Digital Electronics

5- Electronic Devices & Circuits

6- Analog Circuits

7- Communications

8- Electromagnetics

9- Engineering Mathematics

A total of 65 questions will be asked for 100 marks with a mix of 1 mark and 2 mark questions. General Aptitude section is mandatory for all 23 papers in GATE 2018.

GATE has two types of questions-

-Multiple Choice questions: MCQs have options and candidates must choose carefully as there is negative marking for these question

-Numerical Ability questions: These questions have to be calculated and carry no negative marking.

Remember the following points

-Check the past year papers and exam analysis.

-Divide the Topics broadly into Strong, Weak and to be read properly.

-While many advise to check the weightage and study accordingly, it is really not the correct way to go. Check the weightage by all means and understand the important topics but don’t neglect to study the not so important topics

-Make Short Notes while you study as this is will be helpful during revision.

-Write down Formulae that you find difficult to remember so that they are handy for revision.

-Keep the solved problems separately indexed so that you can refresh and revise later when required.Analyse your preparation at every step.

To know more about preparation you can refer below link

How to prepare for GATE