Where GATE IN's marks have come from
Based on IAE's count of past papers. What it cannot tell you is at the end.
A subject-by-subject count of where GATE Instrumentation Engineering's 85-mark subject component has gone across the seven papers of 2018, 2020 and 2022–2026. The counts, not a forecast, are turned into an order.
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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 come from, subject by subject, across the seven GATE IN papers that IAE's study library has solved: 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
Marks per GATE IN paper under each published study subject, seven papers: 2018, 2020, 2022–2026, with the average per paper
| Subject | 2018 | 2020 | 2022 | 2023 | 2024 | 2025 | 2026 | Average per paper |
|---|---|---|---|---|---|---|---|---|
| Engineering Mathematics | 13 | 15 | 13 | 15 | 15 | 14 | 13 | 14.0 |
| Networks (Electric Circuits) | 9 | 12 | 15 | 9 | 8 | 16 | 7 | 10.9 |
| Analog Electronics | 10 | 11 | 12 | 10 | 15 | 3 | 9 | 10.0 |
| Control Systems | 11 | 13 | 12 | 9 | 9 | 8 | 6 | 9.7 |
| Signals and Systems | 9 | 8 | 6 | 8 | 11 | 11 | 9 | 8.9 |
| Digital Electronics | 11 | 8 | 7 | 9 | 5 | 10 | 8 | 8.3 |
| Electrical and Electronic Measurements | 8 | 8 | 6 | 6 | 9 | 7 | 8 | 7.4 |
| Electromagnetics | 2 | 4 | 4 | 5 | 4 | 4 | 5 | 4.0 |
| Electrical Machines | 0 | 0 | 1 | 3 | 4 | 2 | 3 | 1.9 |
| Not in a library subject yet | 12 | 6 | 9 | 11 | 5 | 10 | 17 | 10.0 |
| Subject component (fixed by the brochure) | 85 | 85 | 85 | 85 | 85 | 85 | 85 | 85 |
Source: the official GATE IN papers and answer keys for 2018, 2020 and 2022–2026. 2019 and 2021 are left out: the copies IAE hosts are image scans without the answer key. We placed each question under a subject ourselves; the exam paper does not label subjects. These are counts of past papers, not a forecast. The 85-mark subject component is from the GATE 2027 Information Brochure (printed page 4). Data as of 27 Sep 2026.
Each row is a subject as we placed the questions; the exam paper does not label subjects. 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: the marks we placed under this subject run 13–15 per paper against the brochure's fixed 13, because we placed each question ourselves and did not follow the paper's own section boundaries. The same applies to every other row. The 'Not in a library subject yet' row is marks on questions that are not under any published subject. 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
| Order | Subject | Average marks per paper | Lowest–highest in one paper | Papers it appeared in (of 7) |
|---|---|---|---|---|
| 1 | Engineering Mathematics | 14.0 | 13–15 | 7 |
| 2 | Networks (Electric Circuits) | 10.9 | 7–16 | 7 |
| 3 | Analog Electronics | 10.0 | 3–15 | 7 |
| 4 | Control Systems | 9.7 | 6–13 | 7 |
| 5 | Signals and Systems | 8.9 | 6–11 | 7 |
| 6 | Digital Electronics | 8.3 | 5–11 | 7 |
| 7 | Electrical and Electronic Measurements | 7.4 | 6–9 | 7 |
| 8 | Electromagnetics | 4.0 | 2–5 | 7 |
| 9 | Electrical Machines | 1.9 | 0–4 | 5 |
Source: Computed from the table above. General Aptitude is not in this list: it is a fixed 15 marks outside the 85-mark subject component, with its own common syllabus. Data as of 27 Sep 2026. Subjects with the same average (to one decimal place) share a place, marked =.
By average marks per paper across the seven 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
| Syllabus section | Title | Study library subject |
|---|---|---|
| Section 1 | Engineering Mathematics | Engineering Mathematics |
| Section 2 | Electricity and Magnetism | Electromagnetics |
| Section 3 | Electrical Circuits and Machines | Networks (Electric Circuits), Electrical Machines |
| Section 4 | Signals and Systems | Signals and Systems |
| Section 5 | Control Systems | Control Systems |
| Section 6 | Analog Electronics | Analog Electronics |
| Section 7 | Digital Electronics | Digital Electronics |
| Section 8 | Measurements | Electrical and Electronic Measurements |
| Section 9 | Sensors and Industrial Instrumentation | Not in the library yet |
| Section 10 | Communication and Optical Instrumentation | Not in the library yet |
Source: official GATE 2027 IN syllabus PDF (IIT Madras), 27 Sep 2026. Subjects are those in IAE's 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 papers. The study library has not solved their questions yet, so they have no subject page.
WHAT THIS CANNOT TELL YOU
What this cannot tell a reader. It draws on seven GATE IN papers only: 2018, 2020, 2022, 2023, 2024, 2025 and 2026. 2019 and 2021 are left out because the copies IAE hosts are image scans without the answer key. We placed each question under a subject ourselves; the exam paper does not label subjects. The 'Not in a library subject yet' marks in the first table are unsolved sections plus any question from a covered section that we did not place. This post does not say which. These are counts of marks in past papers, not a forecast of any future one, GATE 2027 included.
Data as of 27 Sep 2026.
From the Resource Centre
GATE IN previous-year papers 2018–2026
Nine years of GATE Instrumentation Engineering question papers (2018–2026), as the organising institutes published them. Spot the recurring topics, gauge the difficulty, and revise with purpose. The 2018, 2020 and 2022 papers include the organising institute’s own answer key.
ANY GATE YEARGATE 2027 Official Syllabus — All Papers
The official GATE 2027 syllabus, all 30 papers. Know the exact topics, sections and weightage before you plan a single day of prep. The new Robotics and Automation (RA) paper is not in this set yet.
GATE 2027Common questions
How many marks does Engineering Mathematics carry in a GATE IN paper?+
Which GATE IN subject has averaged the most marks per paper?+
Are Sensors and Industrial Instrumentation, or Communication and Optical Instrumentation, covered in the study library?+
Why are 2019 and 2021 GATE IN papers left out of this count?+
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