GATE

# Last 30 Year Question Papers and Keys of GATE EC

### GATE Electronics and Communication Engineering Previous Papers and Keys Graduate Aptitude Test in Engineering (GATE) is a national level entrance examination conducted for admissions to Post Graduation programs like M. Tech, M.Arch, ME, PH.D. etc. It is held by IISc and seven IITs on behalf of NCB –GATE and MHRD. The examination will be conducted usually in the month of Feb/ March every year across many cities of India. The scores of the examination are accepted by more than 900+ institutes across India and is valid for three years after the announcement of results.

Know more about GATE EC Exam:

• This examination is conducted Online and is a duration of 3-hours.
• The Question Paper has a total of 65 Questions totalling to 100 marks.
• The question paper is divided into three sections: General Aptitude, Engineering Mathematics, Subject-specific section.
• The exam contains two types of questions – Multiple Choice Questions (MCQ) and Numerical Answer Type (NAT) Questions.

Each MCQ would carry 1 or 2 marks and a choice of four answers are given, out of which the candidate must choose the correct answer. Note: There will be negative marking for a wrongly selected answer.

Each NAT question carry 1 or 2 marks and no choices are given. For these questions, the answer is a signed real number, which needs to be entered by the candidate using the virtual numeric keypad on the monitor (keyboard of the computer will be disabled). There is no negative marking for a wrong answer in NAT questions.

Download the detailed syllabus and a collection of previous years GATE EC Question papers to score better for the GATE Electronics and Communication Engineering examination.

## GATE 2019 EC Syllabus:

• Section 1: Engineering Mathematics

Linear Algebra: Matrix algebra, Eigen values and eigenvectors.

Calculus: Taylor series, Mean value theorems, Stokes, Gauss and Green’s theorems.

Differential equations: Cauchy’s and Euler’s equations, Initial and boundary value problems, Laplace transforms and Laplace equation.

Complex variables: Complex number, polar form of complex number.

Probability and Statistics: Definitions of probability and sampling theorems, Poisson, Normal and Binomial distributions, Linear regression analysis.

Numerical Methods: Numerical solutions of linear and non-linear algebraic equations. Integration by trapezoidal and Simpson’s rule.

• Section 2: Networks, Signals and Systems: Network solution methods: nodal and mesh analysis; Steady state sinusoidal analysis using phasors; LTI systems, Continuous-time signals.
• Section 3: Electronic Devices: Energy bands in intrinsic and extrinsic silicon; Poisson and continuity equations; Integrated circuit fabrication process, photolithography and twin-tub CMOS process.
• Section 4: Analog Circuits: Simple diode circuits, Single-stage BJT and MOSFET amplifiers, BJT and MOSFET amplifiers, Simple op-amp circuits; Active filters; Voltage reference circuits; Power supplies.
• Section 5: Digital Circuits: Number systems; Combinatorial circuits, Sequential circuits, Semiconductor memories, 8-bit microprocessor (8085).
• Section 6: Control Systems: Basic control system components; Feedback principle; Transfer function; Block diagram representation; Signal flow graph; Transient and steady-state analysis of LTI systems.
• Section 7: Communications: Analog communications, Information theory, channel capacity theorem; Digital communications; Hamming codes;
• Section 8: Electromagnetics: Electrostatics; Maxwell’s equations; Poynting vector; Waveguides, Basics of radar; Plane waves and properties, Light propagation in optical fibers.

For the detailed syllabus in downloadable pdf format, click on GATE EC Syllabus 2020

## GATE EC Previous 30 Year Question Papers

Previous 30 Year Electronics and Communication Engineering Question Papers along with the answer keys are provided in the links below. Question papers are available from 1991-2019