Where GATE IN's marks have come from, 2018–2026: every subject, paper by paper

This post counts marks. For a candidate preparing for GATE IN (Instrumentation Engineering) and deciding what to work on first, it sets out where the paper's 85-mark subject component has actually come from, subject by subject, across the seven GATE IN papers IAE's study library has solved and checked against the official answer key: 2018, 2020, 2022, 2023, 2024, 2025 and 2026. The GATE 2027 Information Brochure fixes the paper at 65 questions and 100 marks, of which General Aptitude is 15 marks with its own common syllabus, sitting outside the 85-mark subject component that Engineering Mathematics and the remaining IN subjects make up between them.

Where GATE IN's 85 subject marks have come from, paper by paper

Each row is a subject as IAE's tags read it, not the organising institute's own classification of the paper — and each column is one past paper, not a prediction for any future one. Read across a row and the year-to-year range is wide: Networks ran from 7 marks in 2026 to 16 in 2025, and Analog Electronics from 3 marks in 2025 to 15 in 2024. The Engineering Mathematics row needs one caveat: IAE's tags put 13–15 marks per paper under this subject against the brochure's fixed 13, because the tags follow IAE's reading of each question, not the paper's own section boundaries — the same distinction that applies to every other row. The 'Not yet filed under a published subject' row is marks on questions that no published subject's classifier has filed; that can include questions from a section the library already covers, as well as sections it does not cover yet, and the two are not separated in this row. The last row is the brochure's fixed 85-mark subject component; the rows above add up to it in every year.

GATE IN subjects in order of average marks per paper

By average marks per paper across the seven keyed papers, the order runs Engineering Mathematics (14.0), Networks (10.9), Analog Electronics (10.0), Control Systems (9.7), Signals and Systems (8.9), Digital Electronics (8.3), Electrical and Electronic Measurements (7.4), Electromagnetics (4.0), and Electrical Machines (1.9). None of these nine averages tie to one decimal place, so the order above has no shared places. A plan that follows the marks would take Engineering Mathematics, Networks and Analog Electronics first — the three subjects that each averaged 10 or more marks a paper — before moving down the list. Electrical Machines sits last on the average and also appeared in only five of the seven papers, carrying no marks at all in 2018 or 2020. General Aptitude does not appear in this list: it is a fixed 15 marks outside the 85-mark subject component, with its own common syllabus, so it is counted separately rather than ranked against these nine.

The GATE IN syllabus, section by section, against the study library

The official GATE 2027 IN syllabus prints ten sections. Eight are matched to a published study subject above; two are not: Sensors and Industrial Instrumentation, and Communication and Optical Instrumentation. These are real marks in the paper — the subject component's 85 marks include whatever these two sections have contributed in each of the seven keyed years — and the study library has not yet solved and filed the questions from them under a subject page.