AMIE Syllabus has two parts- Section A and Section B.
It is the first part of AMIE.If you are a diploma holder, you should study 4 subjects in Section A . The 4 subjects
in Section A are general engineering subjects. You can see syllabus here.
After passing Section A, you get admitted to Section B. Its in Section B that you select your choicest branch of engineering.
In section B you must study Nine subjects (excuding lab and project work) .
Hence , a Diploma holder should study 4+9=13 subjects in AMIE.
If you are a +2 or equivalent holder, you should study 10 subjects in Section A, and Nine subjects (excluding
lab and project work) in section B.