Section 1: Engineering Mathematics

Linear Algebra: Matrix Algebra, Systems of linear equations, Eigen values, Eigenvectors.

Calculus: Mean value theorems, Theorems of integral calculus, Evaluation of definite and improper integrals, Partial Derivatives, Maxima and minima, Multiple integrals, Fourier series, Vector identities, Directional derivatives, Line integral, Surface integral, Volume integral, Stokes's theorem, Gauss's theorem, Green's theorem.

Differential equations: First order equations (linear and nonlinear), Higher order linear differential equations with constant coefficients, Method of variation of parameters, Cauchy's equation, Euler's equation, Initial and boundary value problems, Partial Differential Equations, Method of separation of variables.

Complex variables: Analytic functions, Cauchy's integral theorem, Cauchy's integral formula, Taylor series, Laurent series, Residue theorem, Solution integrals.

Probability and Statistics: Sampling theorems, Conditional probability, Mean, Median,Mode, Standard Deviation, Random variables, Discrete and Continuous distributions, Poisson distribution, analysis.

Numerical Methods: Solutions of nonlinear algebraic equations, Single and Multistep methods for differential equations.

Transform Theory: Fourier Transform, Laplace Transform, z Transform.


Section 2: Electric Circuits

Network graph, KCL, KVL, Node and Mesh analysis, Transient response of dc and ac networks, Sinusoidal steady? state analysis, Resonance, Passive filters, Ideal current and voltage sources, Thevenin's theorem, Norton's theorem, Superposition theorem, Maximum power transfer theorem, Two port networks, Three phase circuits.

New topics: Power and power factor in ac circuits


Section 3: Electromagnetic Fields

Coulomb's Law, Electric Field Intensity, Electric Flux Density, Gauss's Law, Divergence, Electric field and potential due to point, line, plane and spherical charge distributions, Effect of dielectric medium, Capacitance of simple configurations, Biot Savart's law, Ampere's law, Curl, Faraday's law, Lorentz force, Inductance.

New topics: Magnetomotive force, Reluctance, Magnetic circuits, Self and Mutual inductance of simple configurations.


Section 4: Signals and Systems

Representation of continuous and discrete time signals, Shifting and scaling operations, Linear Time Invariant and Causal systems, Fourier series representation of continuous periodic signals, Sampling theorem, Laplace Transform and zTransform.

New topics: Applications of Fourier Transform


Section 5: Electrical Machines

Single phase transformer: equivalent circuit, phasor diagram, open circuit and short circuit tests, regulation and efficiency; Three phase transformers: connections, parallel operation; Auto? transformer, Electromechanical energy conversion principles, DC machines: separately excited, series and shunt, motoring and generating mode of operation and their characteristics, starting and speed control of dc motors; Three phase induction motors: principle of operation, types, performance, torque speed characteristics, noload and blocked rotor tests, equivalent circuit, starting and speed control; Operating principle of single phase induction motors; Synchronous machines: cylindrical and salient pole machines, performance, regulation and parallel operation of generators, starting of synchronous calculations of electric machines.

Topics removed: Servo motor and Stepper motor


Section 6: Power Systems

Power generation concepts, ac and dc transmission concepts, Models and performance of transmission lines and cables, Series and shunt compensation, Electric field distribution and insulators, Distribution systems, Per?unit quantities, Bus admittance matrix, GaussSeidel and NewtonRaphson load flow methods, Voltage and Frequency control, Power factor correction, Symmetrical components, Symmetrical and unsymmetrical fault analysis, Principles of over?current, differential and distance protection; Circuit breakers, System stability concepts, Equal area criterion.

Topics removed: Economic operation, solid state relays and digital protection, HVDC and FACTS


Section 7: Control Systems

Feedback principle, transfer function, Block diagrams and Signal flow graphs, Transient and Steady?state analysis of linear time invariant systems, RouthHurwitz and Nyquist criteria, Bode plots, Root loci, Stability analysis, Lag, Lead and Lead?Lag compensators; State space model, State transition matrix.

New topics: Mathematical modeling and representation of systems, P, PI and PID controllers


Section 8: Electrical and Electronic Measurements

Bridges and Potentiometers, Measurement of voltage, current, power, energy and power factor; Instrument transformers, Digital voltmeters and Error analysis.

Topic removed: Qmeter


Section 9: Analog and Digital Electronics

Characteristics of diodes, BJT, MOSFET; Simple diode circuits: clipping, clamping, rectifiers; Amplifiers: Biasing, Equivalent circuit and Frequency response; Oscillators and Feedback amplifiers; Operational amplifiers: Characteristics and applications; Simple active filters, VCOs and Timers, Combinational and Sequential logic circuits, Multiplexer, Schmitt trigger, Sample and hold circuits, A/D and D/A converters, 8085Microprocessor: Architecture, Programming and Interfacing.

New topic: Demultiplexer


Section 10: Power Electronics

Characteristics of semiconductor power devices: Diode, Thyristor, Triac, GTO, MOSFET, IGBT; DC to DC conversion: Buck, Boost and BuckBoost converters; Single and three phase configuration of uncontrolled rectifiers, Line commutated thyristor based converters, Bidirectional ac to dc voltage source converters, Issues of line current harmonics, Powerthree phase inverters.

New topic: Sinusoidal pulse width modulation

27Mar2017
The GATE 2017 results have been announced today i.e. March 27, 2017, on its official website.
07Mar2017
The exams were conducted on February 4 to February 5, and February 11 and February 12 this year. It was held in two sessions, forenoon and afternoon on weekends.
06Jan2017
The admit cards for the candidates who had registered to attend the Graduate Aptitude Test in Engineering (GATE) 2017 exam has been released by the Indian Institute of Technology, Roorkee (IITR), the oldest Technical Institution of Asia, on Thursday.
07Oct2016
GATE 2017 is being organised by IIT Roorkee. The examination is scheduled to be held on February 4, 5, 11, and 12, 2017. GATE is held in 23 disciplines of engineering and science subjects, the exam gauges a candidate's understanding of a subject, aptitude and eligibility.
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