Where can I practice GATE Electronics & Communication Engineering previous year questions with solutions?

You can practice complete official GATE Electronics & Communication Engineering solved previous year questions (PYQs) for free on Examnetwork, featuring topic-wise chapter accordions, subject-wise question banks, year-wise full papers, and TCS iON virtual calculator integration.

Which topics and subjects carry the highest weightage in GATE Electronics & Communication Engineering?

Examnetwork provides a dynamic PYQ Analyser that computes subject-wise marks weightage, most repeated high-yield topics, and year-by-year trend breakdowns directly from official solved exam datasets.

Does Examnetwork provide the official TCS iON Virtual Calculator for numerical questions?

Yes, Examnetwork features an authentic TCS iON Virtual Calculator with accurate precision, trigonometric, logarithmic, and power functions matching the actual GATE exam interface.

GATE Electronics & Communication (EC) Solved PYQs & Topic Analyser

Module 01 • Recommended

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GATE EC Previous Year Questions

Official 34 Solved Papers Catalog. Practice 4 ways: Topic-wise chapter accordions, Subject-wise question banks, Year-wise full papers, or the Interactive Solver.

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Module 02 • Daily Speed

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Daily Quiz

Solve daily 3 high-yield numericals, maintain your 7-day flame streak & calendar with virtual calculator integration!

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Module 03 • Simulation

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Mock Test Simulator

Full 3-Hour timed GATE exam simulation with Virtual Calculator integration & Instant Marks Analysis.

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Module 04 • High Yield

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PYQ Analyser & Trends

Dynamic subject-wise marks weightage, most repeated topics ranking, question type visual graphs, and live syllabus analytics.

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🎯 Today's GATE EC Practice Target

Q1. A continuous-time signal is given by x(t) = 5 cos(200πt) + 10 sin(600πt). What is the minimum Nyquist sampling rate required to avoid aliasing? GATE EC • Signals & Systems

💡 Solution (Option B): The angular frequencies are ω₁ = 200π rad/s ⇒ f₁ = 100 Hz, and ω₂ = 600π rad/s ⇒ f₂ = 300 Hz. The maximum frequency is f_max = 300 Hz. The Nyquist sampling rate is f_s = 2 * f_max = 2 * 300 = 600 Hz.

Q2. In an ideal inverting operational amplifier circuit with input resistor R₁ = 10 kΩ and feedback resistor R_f = 100 kΩ, what is the closed-loop voltage gain A_v? GATE EC • Analog Circuits

💡 Solution (Option B): For an ideal inverting amplifier configuration, the closed-loop voltage gain is given by A_v = -R_f / R₁ = -100 kΩ / 10 kΩ = -10.

Q3. If the doping concentration on the acceptor side (N_A) of an abrupt silicon p-n junction is multiplied by 10, by how much does the built-in potential V_bi increase at room temperature (V_T ≈ 26 mV)? GATE EC • Semiconductor Devices (EDC)

💡 Solution (Option B): Built-in potential V_bi = V_T * ln(N_A * N_D / n_i²). When N_A becomes 10 * N_A, ΔV_bi = V_T * ln(10) ≈ 26 mV * 2.3026 ≈ 59.87 mV ≈ 60 mV.

📚 GATE 30-Year PYQ Khazana & Topper Registers

Signals & Systems and DSP

Linear Time-Invariant (LTI) systems, convolution integrals, Fourier series/transforms properties, Z-transforms ROC rules, and DFT/FFT twiddle factors.

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EDC & Analog Circuit Design

Energy band diagrams, drift and diffusion current densities, BJT small signal h-parameter models, MOSFET triode & saturation region currents, and feedback amplifier topologies.

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Communications & Electromagnetics (EMFT)

AM, FM bandwidth (Carson's rule), PCM quantization noise, BPSK/QPSK probability of error formulas, Maxwell's equations, Poynting vector, and Smith chart impedance matching.

Practice Communications PYQs →