GATE Electronics & Communication: 40 Years of Patterns
Data analysis of every GATE Electronics & Communicationquestion 1987-2026. What's tested year after year, what shifted, what to focus on.
Top 20 most-tested topics
Sorted by total question count. The "appeared in" column shows recurrence — topics in 30+ different years are near-guarantees for the next exam.
| Topic | Total Qs | Years appeared | First → Last | Recurrence |
|---|---|---|---|---|
| Calculus (EC) | 94 | 25 | 1993 → 2025 | 63% |
| Signal Properties | 78 | 31 | 1990 → 2024 | 78% |
| Digital Modulation | 74 | 33 | 1987 → 2025 | 83% |
| Probability & Stats | 71 | 22 | 1987 → 2025 | 55% |
| EM Waves | 71 | 33 | 1987 → 2024 | 83% |
| Laplace Transform | 66 | 28 | 1987 → 2017 | 70% |
| Linear Algebra (EC) | 66 | 23 | 1994 → 2025 | 57% |
| Number Systems & Boolean | 59 | 31 | 1987 → 2025 | 78% |
| Sampling & DTFT | 49 | 28 | 1988 → 2025 | 70% |
| Stability | 44 | 26 | 1988 → 2025 | 65% |
| Semiconductors | 43 | 22 | 1987 → 2025 | 55% |
| Frequency Response | 42 | 21 | 1987 → 2024 | 53% |
| Fourier Transform | 42 | 25 | 1988 → 2025 | 63% |
| Transmission Lines | 41 | 28 | 1987 → 2025 | 70% |
| Differential Equations | 40 | 22 | 1994 → 2025 | 55% |
| Z-Transform | 40 | 22 | 1988 → 2025 | 55% |
| Time Response | 39 | 22 | 1988 → 2022 | 55% |
| Antennas | 39 | 25 | 1987 → 2021 | 63% |
| FET | 38 | 18 | 1992 → 2024 | 45% |
| Waveguides | 37 | 26 | 1987 → 2022 | 65% |
Recurrence ≥ 80% means the topic appears in at least 32 of 40 years — functionally guaranteed.
The NAT shift: 0% → 28%
2010-2013
0%
NAT share (pre-shift era)
2014-2020
38%
NAT introduced
2021-2026
24%
NAT entrenched
Numerical Answer Type (NAT) questions did not exist in GATE Electronics & Communication before 2014. Today they make up roughly a quarter of every paper. Aspirants studying from pre-2014 textbooks are training for an exam that no longer exists.
Question type mix by year
| Year | MCQ | NAT | MSQ/MTF | % NAT |
|---|---|---|---|---|
| 2026 | 49 | 13 | 0 | 20% |
| 2025 | 73 | 19 | 10 | 18% |
| 2024 | 69 | 31 | 7 | 29% |
| 2023 | 78 | 23 | 4 | 22% |
| 2022 | 17 | 6 | 9 | 19% |
| 2021 | 18 | 18 | 0 | 49% |
| 2020 | 54 | 12 | 0 | 18% |
| 2019 | 49 | 23 | 0 | 31% |
| 2018 | 18 | 8 | 0 | 29% |
| 2017 | 56 | 28 | 0 | 32% |
| 2016 | 43 | 49 | 2 | 51% |
| 2015 | 64 | 46 | 0 | 42% |
| 2014 | 73 | 65 | 2 | 46% |
| 2013 | 31 | 0 | 0 | 0% |
Why this matters
- Data Structures has appeared in 35different years. That's a near-guarantee, not a probability.
- 5 sub-topics under Discrete Mathematicsall appear 80%+ years. Treating Discrete Math as one chapter is a mistake — it's 5 separate guaranteed topics.
- NAT now ≈ 30% of paper. Anyone preparing only MCQs is losing 30 marks before they walk in.
- General Aptitude grew 10× — from 10 Qs (2010-2015) to 107 Qs (2021-2026). Coaching books that ignore GA are obsolete.
- Topics absent for 5+ years tend to return.Spectrum of what's overdue: Laplace Transform, Antennas