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A structured Electronics & Communication Engineering preparation platform built around previous-year questions, historical trends, topic analysis, subject priorities, revision systems and exam strategy.
Historical data from multi-year PYQ analysis. Strategic scores indicate exam priority.
Data-driven analysis of 15 years of GATE EC papers. Know exactly what to study, what to skip, and how to score 65+ marks.
Highest NPPI score. Questions repeat from these every year without exception.
Separate top 100 from top 1000. Focus only on high-frequency PYQ patterns.
Large syllabi, deep theory, few marks. Only attempt basics after mastering P1 & P2.
Marks per subject per year. Darker = more marks asked. Identify which subjects are trending up for 2027.
| Subject | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
|---|
The analysis tells you what to study. The CBT Portal is where you prove you actually know it — under real exam conditions.
Launch Full CBT Practice →Ranked by 15-Year Historical Frequency, Average Marks Yield, and NPPI (Normalized Past Performance Index). Use the subject filter tabs to isolate core topics.
| # | Subject | Power Topic | Frequency | Avg Marks | Tier | Strategic Focus |
|---|---|---|---|---|---|---|
| 1 | Networks | Basic Circuit Laws & Network Theorems | 15/15 Yrs | 5.2 M | ★ Tier S | Thevenin, Norton, Superposition, Maximum Power Transfer |
| 2 | Aptitude | Numerical & Quantitative Ability | 15/15 Yrs | 8.5 M | ★ Tier S | Percentages, Ratios, Speed-Time, Permutation & Combinations |
| 3 | Digital | Boolean Algebra & Combinational Circuits | 15/15 Yrs | 4.5 M | ★ Tier S | K-Maps, Multiplexers, Decoders, Code Converters |
| 4 | Analog | Operational Amplifiers & Ideal Op-Amp Circuits | 15/15 Yrs | 4.6 M | ★ Tier S | Virtual ground, Inverting/Non-inverting, Active Filters, Schmitt Trigger |
| 5 | Signals | LTI Systems & Convolution | 15/15 Yrs | 4.8 M | ★ Tier S | Impulse response, Causality, Stability, Graphical Convolution |
| 6 | Math | Linear Algebra (Matrices & Eigenvalues) | 15/15 Yrs | 4.5 M | ★ Tier S | Rank, Cayley-Hamilton, Eigenvectors, System of Linear Equations |
| 7 | Control | State-Space Analysis & Transfer Function | 14/15 Yrs | 3.8 M | ★ Tier S | State transition matrix, Controllability, Observability, Block Diagrams |
| 8 | EDC | MOSFET Physics & I-V Characteristics | 14/15 Yrs | 3.8 M | ★ Tier S | Threshold voltage, Pinch-off, Saturation current, Body effect |
| 9 | Networks | Transient Response (RL, RC, RLC Circuits) | 14/15 Yrs | 3.5 M | ◆ Tier A | Initial conditions, Time constant, Differential equation approach |
| 10 | Comms | Digital Modulation (BPSK, QPSK, Constellations) | 13/15 Yrs | 4.2 M | ◆ Tier A | Probability of error, Matched filter, Signal space, Gray coding |
| 11 | Control | Frequency Response (Bode & Nyquist Plots) | 15/15 Yrs | 3.4 M | ◆ Tier A | Gain margin, Phase margin, Nyquist stability criterion, Asymptotic plots |
| 12 | Signals | Fourier Transform & Sampling Theorem | 14/15 Yrs | 3.6 M | ◆ Tier A | Nyquist rate, Aliasing, Dualities, Energy spectral density |
| 13 | Digital | Sequential Circuits (Flip-Flops & Counters) | 14/15 Yrs | 3.6 M | ◆ Tier A | Synchronous/Asynchronous counters, Mod-N design, Setup & Hold times |
| 14 | EDC | PN Junction Diode Physics & Depletion Capacitance | 14/15 Yrs | 3.2 M | ◆ Tier A | Built-in potential, Space charge width, Diffusion/Drift current |
| 15 | Math | Probability Distributions & Random Variables | 14/15 Yrs | 3.4 M | ◆ Tier A | Bayes Theorem, Gaussian, Poisson, Expectation & Variance |
| 16 | Analog | Small Signal BJT & MOSFET Amplifiers | 13/15 Yrs | 3.5 M | ◆ Tier A | Voltage gain, Input/Output impedance, Common Source/Emitter |
| 17 | EMT | Transmission Lines & Smith Chart | 13/15 Yrs | 3.5 M | ◆ Tier A | Reflection coefficient, VSWR, Input impedance, Quarter-wave matching |
| 18 | Comms | Random Processes & Noise in Receivers | 12/15 Yrs | 3.2 M | ◆ Tier A | Autocorrelation, Power Spectral Density, WSS processes, SNR |
| 19 | Math | Differential Equations & Vector Calculus | 14/15 Yrs | 3.0 M | ◆ Tier A | First order ODE, Green/Stokes/Divergence theorems, Gradient |
| 20 | Networks | Two-Port Networks & Resonance | 12/15 Yrs | 2.8 M | ◆ Tier A | Z, Y, ABCD, h-parameters, Quality factor, Bandwidth |
| 21 | Control | Routh-Hurwitz Stability & Root Locus | 13/15 Yrs | 2.8 M | ● Tier B | Asymptotes, Breakaway points, Marginal stability, Range of K |
| 22 | Signals | Z-Transform & Laplace Transform | 13/15 Yrs | 2.9 M | ● Tier B | Region of Convergence (ROC), Inverse transforms, Poles and Zeros |
| 23 | Analog | Feedback Amplifiers & Diode Circuits | 12/15 Yrs | 2.6 M | ● Tier B | Negative feedback topologies, Clippers, Clampers, Rectifiers |
| 24 | Comms | Information Theory & Source Coding | 11/15 Yrs | 2.5 M | ● Tier B | Entropy, Mutual information, Shannon capacity, Huffman coding |
| 25 | EMT | Uniform Plane Waves & Poynting Vector | 11/15 Yrs | 2.4 M | ● Tier B | Wave propagation in lossy/lossless media, Polarization, Skin depth |
Out of 68 total syllabus topics, mastering these top 22 core topics guarantees eligibility for PSU selection and top IIT M.Tech seats. Do NOT spread yourself thin across low-yield topics early in your preparation runway.
Question type distribution from 2012 to 2026. Stacked bars show MCQ, NAT, and MSQ counts.
Topics that appear consistently across GATE EC exams. High recurrence = high probability of appearing in future papers.
A topic-level breakdown of every core subject so you know exactly what to study inside each one. Always cross-check against the official GATE brochure for the current exam year before finalising your plan.
Network elements and Kirchhoff’s laws · Node and mesh analysis · Network theorems (superposition, Thevenin, Norton, maximum power transfer) · Transient response of RL, RC and RLC circuits · Sinusoidal steady state analysis · Resonance · Two-port network parameters · Three-phase circuits · Laplace transform applications in circuit analysis.
Electrostatics and Gauss’s law · Magnetostatics and Biot-Savart law · Maxwell’s equations (differential and integral forms) · Wave propagation in free space and dielectrics · Transmission lines and impedance matching · Waveguides · Antennas basics.
Basics of feedback control · Transfer function representation · Block diagram reduction and signal flow graphs · Time-domain analysis (transient and steady-state) · Routh-Hurwitz stability criterion · Root locus technique · Frequency response (Bode, Nyquist, Polar plots) · State-space representation.
Semiconductor physics basics · PN junction diode and applications · Bipolar Junction Transistor (BJT) characteristics · MOSFET characteristics and biasing · Small-signal models · Photodiodes and LEDs basics.
Single-stage and multi-stage amplifiers · Frequency response of amplifiers · Feedback amplifiers · Operational amplifier characteristics and applications · Oscillators · Function generators and wave-shaping circuits · Power amplifiers basics.
Number systems and codes · Boolean algebra and logic gates · Combinational circuit design (adders, multiplexers, decoders) · Sequential circuits (flip-flops, counters, shift registers) · Semiconductor memories · Basics of microprocessors.
Continuous and discrete-time signals · LTI systems and convolution · Fourier series and Fourier transform · Sampling theorem · Laplace transform and region of convergence · Z-transform and its properties · System analysis using transforms.
Amplitude and angle modulation · Superheterodyne receivers · Sampling and quantisation · Digital modulation techniques (ASK, FSK, PSK) · Information theory basics · Channel capacity · Basics of error control coding.
Linear algebra (matrices, eigenvalues, eigenvectors) · Calculus (limits, continuity, differentiability, integrals) · Differential equations · Complex variables · Probability and statistics · Numerical methods basics.
Begin with Network Theory (25.17%), General Aptitude (16.11%) and Digital Circuits (11.28%) since they consistently carry the largest share of marks.
Condense each subject into a single set of handwritten notes covering formulas, standard results and common mistakes.
After finishing a topic, immediately solve that topic’s previous year questions across multiple years to spot recurring patterns.
Simulate exam pressure early by attempting subject-wise tests under a strict time limit before moving to full mock papers.
Track every mistake from practice questions in one place and revisit it weekly — repeated errors reveal your weakest concepts.
Stop learning new topics at least three to four weeks before the exam and switch entirely to formula-sheet revision and full-length mocks.
Choose your remaining time to generate a calibrated daily study split, high-yield subject priorities, and negative ROI topics to skip.
Start with individual subject tests to build confidence. Focus on accuracy over speed initially. Aim for 80%+ accuracy before moving to full-length mocks.
Combine 2–3 related subjects per test. Practice time allocation across sections. Build stamina for longer sessions.
Simulate exact GATE conditions — 3-hour test, no breaks. Analyze every mistake afterward. Track accuracy and time per question.
After every mock, spend 1–2 hours analyzing: wrong answers, unattempted questions, time wasted, and accuracy by subject. Update your error log.
V = IR Ohm’s LawVth = Vab(open) Thevenin VoltageZth = Vth/Isc Thevenin ImpedancePmax = Vth^2 / 4Rth Max Power Transferi(t) = I0 * e^(-t/tau) RL/RC TransientZ = R + j(XL - XC) Series RLC Impedance[V] = [Z][I] Two-port Z-parameters[I] = [Y][V] Two-port Y-parametersX(f) = integral[x(t)e^(-j2pi ft)]dt Fourier TransformX(s) = integral[x(t)e^(-st)]dt Laplace TransformX(z) = sum[x[n]z^(-n)] Z-Transformy(t) = x(t) * h(t) Convolution Integralfs >= 2*fmax Nyquist Sampling Theoremx(t) = sum[cn * e^(jnw0t)] Fourier SeriesG(s) = C(s)/R(s) Transfer Functions^3 + a1*s^2 + a2*s + a3 = 0 Characteristic Equationess = 1/(1+Kp) Steady State Error (Type 0)K = product(loop gains) Root Locus GainGM = -20log|G(jwc)| Gain MarginPM = 180 + angle(G(jwpc)) Phase MarginDeMorgan: (AB)' = A'+B' Boolean AlgebraN = 2^n states Flip-flop Countfclk = 1/(Tpd+Tsetup) Max Clock Frequency2^n >= M Counter Bits NeededHamming: 2^r >= m+r+1 Error CorrectionAv = -Rf/R1 Inverting Op-amp GainAv = 1 + Rf/R1 Non-inverting GainID = IS(e^(VD/VT)-1) Diode Currentgm = IC/VT BJT Transconductanceft = gm/(2pi*Cgs) MOSFET Cut-off Freqdet(A-lambda*I) = 0 Eigenvalue Equationrank(A) + nullity(A) = n Rank-Nullity Theoremd/dx[integral f(t)dt] = f(x) Leibniz RuleP(A|B) = P(B|A)P(A)/P(B) Bayes TheoremE[X] = integral x*f(x)dx Expected ValueRead through all 65 questions. Mark easy ones you can solve instantly. Identify NAT questions (no negative marking — attempt these first).
Solve all questions you marked as easy. Target 35–40 questions here. This builds your score buffer and confidence.
Now tackle medium-difficulty questions. Skip any that take more than 3 minutes. NAT questions have no negative marking — always attempt them.
Only attempt hard MCQs if you are 70%+ confident. With 1/3 negative marking, blind guessing is not worth it.
Check for unattempted NAT questions. Verify flagged answers. Do not change answers unless you find a clear error.
Network Theory, Electromagnetic Theory, Control Systems, Electronic Devices & Circuits, Analog Electronics, Digital Circuits, Signals & Systems, Communication Systems, plus Engineering Mathematics and General Aptitude — 10 subjects in total with 68 mapped topics.
BerojgarAcademy covers an extensive multi-year GATE EC PYQ archive spanning 15 years (2012–2026) across all 10 subjects with MCQ, NAT and MSQ question types.
Network Theory leads with the highest historical weightage, followed by General Aptitude and Digital Circuits. Check the weightage analysis section for detailed breakdown.
Start by reviewing the weightage analysis, study high-weightage subjects first using concise notes, then practice previous year questions topic-wise using the PYQ Explorer and revise with formula sheets in the final weeks.
Follow the 4-phase revision system: (1) Complete notes review in weeks 29–32, (2) Formula sheet revision in weeks 33–36, (3) PYQ-based weak area revision in weeks 37–38, and (4) Final quick recall in the last 1–2 weeks.
Progress from subject-wise tests (60 min) to sectional tests (90 min) to full-length mocks (180 min). After every mock, spend 1–2 hours analyzing mistakes and updating your error log.
Yes. Every note, PYQ set and formula sheet on BerojgarAcademy is free to view and download, with no signup required.
Yes, many Public Sector Undertakings recruit engineers directly through GATE scores, so strong GATE EC preparation also opens PSU job opportunities.
Yes, every subject in the Notes Library links directly to a downloadable PDF hosted on gatenotes.in and Google Drive.
Survey the paper (15 min), attempt easy wins (60 min), solve medium-difficulty NAT and MCQs (75 min), selectively attempt hard MCQs (20 min), and review (10 min). Always attempt NAT questions first as they carry no negative marking.