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2. The Fourier series of a real periodic function has only
P. Cosine terms if it is even
Q. Sine terms if it is even
R. Cosine terms if it is odd
S. Sine terms if it is odd
Which of the above statements are correct?
(A) P and S (B) P and R (C) Q and S (D) Q and R
5.In an n-type silicon crystal at room temperature, which of the following can have
a concentration of 4 10 cm ?19−3
(A) Silicon atoms (B) Holes
(C) Dopant atoms (D) Valence electrons
6.The full form of the abbreviations TTL and CMOS in reference to logic families are
(A) Triple Transistor Logic and Chip Metal Oxide Semiconductor
(B) Tristate Transistor Logic and Chip Metal Oxide Semiconductor
(C) Transistor Transistor Logic and Complementary Metal Oxide Semiconductor
(D) Tristate Transistor Logic and Complementary Metal Oxide Silicon
16.In a microprocessor, the service routine for a certain interrupt starts from a fixed location of memory which cannot be externally set, but the interrupt can be delayed or rejected. Such an interrupt is
(A) non-maskable and non-vectored
(C) non-maskable and vectored
(B) maskable and non-vectored
(D) maskable and vectored
55.The amplitude of a random signal is uniformly distributed between -5V and 5V
If the signal to quantization noise ratio required in uniformly quantizing the signal is 43.5dB, the step size of the quantization is approximately
(A) 0.0333V
(B) 0.05V
(C) 0.0667V
(D) 0.10V
56.If the positive values of the signal are uniformly quantized with a step size of 0.05V, and the negative values are uniformly quantized with a step size of 0.1V, the resulting signal to quantization noise ratio is approximately
(A) 46dB
(B) 43.8dB
(C) 42dB
(D) 40dB
60.What are the minimum numbers of NOT gates and 2-input OR gates required to
design the logic of the driver for this 7-segment display?
(A) 3 NOT and 4 OR
(C) 1 NOT and 3 OR
(B) 2 NOT and 4 OR
(D) 2 NOT and 3 OR
Click Here Download ECE 2009 Paper
3. An analog signal is band-limited to 4kHz, sampled at the Nyquist rate and the
samples are quantized into 4 levels. The quantized levels are assumed to be
independent and equally probable. If we transmit two quantized samples per
second, the information rate is ________ bits / second.
(A) 1 (B) 2 (C) 3 (D) 4
Answer: - (D)
Exp: - Since two samples are transmitted and each sample has 2 bits of information,
then the information rate is 4 bits/sec.
15. The Column-I lists the attributes and the Column-II lists the modulation
systems. Match the attribute to the modulation system that best meets it
Column-I Column-II
P Power efficient transmission of signals 1 Conventional AM
Q Most bandwidth efficient transmission of voice signals 2 FM
R Simplest receiver structure 3 VSB
S Bandwidth efficient transmission of signals with Significant dc component
4 SSB-SC
(A) P-4;Q-2;R-1;S-3 (B) P-2;Q-4;R-1;S-3
(C) P-3;Q-2;R-1;S-4 (D) P-2;Q-4;R-3;S-1
Answer: - (B)
57. Choose the most appropriate word from the options given below to complete the
following sentence: It was her view that the country's problems had been_________ by foreign technocrats, so that to invite them to come back would be
counter-productive.
(A) Identified (B) ascertained (C) Texacerbated (D) Analysed
Answer: - (C)
Exp: -The clues in the question are ---foreign technocrats did something negatively to the problems – so it is counter-productive to invite them. All other options are
non-negative. The best choice is exacerbated which means aggravated or
worsened.
58. Choose the word from the options given below that is most nearly opposite in
meaning to the given word:
Frequency
(A) periodicity (B) rarity
(C) gradualness (D) persistency
Answer: - (B)
Exp: - The best antonym here is rarity which means shortage or scarcity.
59. Choose the most appropriate word from the options given below to complete the
following sentence: Under ethical guidelines recently adopted by the
Indian Medical Association, human genes are to be manipulated only to
correct diseases for which______________ treatments are
unsatisfactory.
(A) Similar (B) Most (C) Uncommon (D) Available
Answer: - (D)
Exp: - The context seeks to take a deviation only when the existing/present/current/
alternative treatments are unsatisfactory. So the word for the blank should be a
close synonym of existing/present/current/alternative. Available is the closest of
all.
60. The question below consists of a pair of related words followed by four pairs of
words. Select the pair that best expresses the relation in the original pair:
Gladiator : Arena
(A) dancer : stage (B) commuter: train
(C) teacher : classroom (D) lawyer : courtroom
Answer: - (D)
65. The horse has played a little known but very important role in the field of
medicine. Horses were injected with toxins of diseases until their blood built up
immunities. Then a serum was made from their blood. Serums to fight with
diphtheria and tetanus were developed this way.
It can be inferred from the passage that horses were
(A) given immunity to diseases (B) generally quite immune to diseases
(C) given medicines to fight toxins (D) given diphtheria and tetanus serums
Answer: - (B)
Exp: - From the passage it cannot be inferred that horses are given immunity as in (A),
since the aim is to develop medicine and in turn immunize humans. (B) is correct
since it is given that horses develop immunity after some time. Refer “until their
blood built up immunities”. Even (C) is invalid since medicine is not built till
immunity is developed in the horses. (D) is incorrect since specific examples are
cited to illustrate and this cannot capture the essence.
Click Here for Download Gate 2011 EC Solved Paper
Q. No. 1 – 25 Carry One Mark Each
1. The eigen values of a skew-symmetric matrix are
(A) always zero (B) always pure imaginary
(C) either zero or pure imaginary (D) always real
5. For parallel RLC circuit, which one of the following statements is NOT correct?
(A) The bandwidth of the circuit deceases if R is increased
(B) The bandwidth of the circuit remains same if L is increased
(C) At resonance, input impedance is a real quantity
(D) At resonance, the magnitude of input impedance attains its minimum value.
6. At room temperature, a possible value for the mobility of electrons in the inversion
layer of a silicon n-channel MOSFET is
(A) 450 cm2/V-s (B) 1350 cm2/V-s (C) 1800 cm2/V-s (D) 3600 cm2/V-s
7. Thin gate oxide in a CMOS process in preferably grown using
(A) wet oxidation (B) dry oxidation
(C) epitaxial deposition (D) ion implantation
Q. No. 26 – 51 Carry Two Marks Each
Q. No. 61 – 65 Carry Two Marks Each
61. Modern warfare has changed from large scale clashes of armies to suppression of
civilian populations. Chemical agents that do their work silently appear to be suited
to such warfare; and regretfully, there exist people in military establishments who
think that chemical agents are useful tools for their cause.
which of the following statements best sums up the meaning of the above
passage:
(A) Modern warfare has resulted in civil strife.
(B) Chemical agents are useful in modern warfare.
(C) Use of chemical agents in warfare would be undesirable.
(D) People in military establishments like to use chemical agents in war.
62. If 137+276=435 how much is 731+672?
(A) 534 (B) 1403 (C) 1623 (D) 1513
63. 5 skilled workers can build a wall in 20 days; 8 semi-skilled worker can build a wall
in 25days; 10 unskilled workers can build a wall in 30 days. If a team has 2 killed,
6 semi-skilled and 5 unskilled workers, how long will it take to build the wall?
(A) 20 days (B) 18 days (C) 16 days (D) 15 days
64. Given digits 2,2,3,3,3,4,4,4,4 how many distinct 4 digit numbers greater than
3000 can be formed?
(A) 50 (B) 51 (C) 52 (D) 54
65. Hari (H), Gita (G), Irfan (I) and Saira (S) are sibiligs (i.e. brothers and sisters). Allwere born on 1st January. The age difference between any two successive siblings(that is born one after another) is less than3 years. Given the following facts:
i. Hair’s age + Gita’s age > Irfan’s age + Saira’s age.
ii. The age difference between Gita and Saira is 1 year. However, Gita is not the
oldest and Saira is not the youngest.
iii. There are not twins.
In what order were they born (0ldest first)?
(A) HSIG (B) SGHI (C) IGSH (D) IHSG
Click Here for Download The EC 2010 Paper
GATE Syllabus For Biotechnology
Engineering Mathematics
Linear Algebra:
Matrices and determinants, Systems of linear equations, Eigen values and Eigen vectors.
Calculus:
Limit, continuity and differentiability, Partial derivatives, Maxima and minima, Sequences and series, Test for convergence, Fourier Series.
Differential Equations:
Linear and nonlinear first order ODEs, higher order ODEs with constant coefficients, Cauchy’s and Euler’s equations, Laplace transforms, PDE- Laplace, heat and wave equations.
Probability and Statistics:
Mean, median, mode and standard deviation, Random variables, Poisson, normal and binomial distributions, Correlation and regression analysis.
Numerical Methods:
Solution of linear and nonlinear algebraic equations, Integration of trapezoidal and Simpson’s rule, Single and multistep methods for differential equations.
Biotechnology
Microbiology:
Prokaryotic and eukaryotic cell structure; Microbial nutrition, growth and control; Microbial metabolism (aerobic and anaerobic respiration, photosynthesis); Nitrogen fixation; Chemical basis of mutations and mutagens; Microbial genetics (plasmids, transformation, transduction, conjugation); Microbial diversity and characteristic features; Viruses.
Biochemistry:
Biomolecules and their conformation; Ramachandran map; Weak inter-molecular interactions in biomacromolecules; Chemical and functional nature of enzymes; Kinetics of single substrate and bi-substrate enzyme catalyzed reactions; Bioenergetics; Metabolism (Glycolysis, TCA and Oxidative phosphorylation); Membrane transport and pumps; Cell cycle and cell growth control; Cell signaling and signal transduction; Biochemical and biophysical techniques for macromolecular analysis.
Molecular Biology and Genetics:
Molecular structure of genes and chromosomes; DNA replication and control; Transcription and its control; Translational processes; Regulatory controls in prokaryotes and eukaryotes; Mendelian inheritance; Gene interaction; Complementation; Linkage, recombination and chromosome mapping; Extrachromosomal inheritance; Chromosomal variation; Population genetics; Transposable elements, Molecular basis of genetic diseases and applications.
Process Biotechnology:
Bioprocess technology for the production of cell biomass and primary/secondary metabolites, such as baker’s yeast, ethanol, citric acid, amino acids, exo-polysacharides, antibiotics and pigments etc.; Microbial production, purification and bioprocess application(s) of industrial enzymes; Production and purification of recombinant proteins on a large scale; Chromatographic and membrane based bioseparation methods; Immobilization of enzymes and cells and their application for bioconversion processes. Aerobic and anaerobic biological processes for stabilization of solid / liquid wastes; Bioremediation.
Bioprocess Engineering:
Kinetics of microbial growth, substrate utilization and product formation; Simple structured models; Sterilization of air and media; Batch, fed-batch and continuous processes; Aeration and agitation; Mass transfer in bioreactors; Rheology of fermentation fluids; Scale-up concepts; Design of fermentation media; Various types of microbial and enzyme reactors; Instrumentation in bioreactors.
Plant and Animal Biotechnology:
Special features and organization of plant cells; Totipotency; Regeneration of plants; Plant products of industrial importance; Biochemistry of major metabolic pathways and products; Autotrophic and heterotrophic growth; Plant growth regulators and elicitors; Cell suspension culture development: methodology, kinetics of growth and production formation, nutrient optimization; Production of secondary metabolites by plant suspension cultures; Hairy root cultures and their cultivation. Techniques in raising transgencies.
Characteristics of animal cells:
Metabolism, regulation and nutritional requirements for mass cultivation of animal cell cultures; Kinetics of cell growth and product formation and effect of shear force; Product and substrate transport; Micro & macro-carrier culture; Hybridoma technology; Live stock improvement; Cloning in animals; Genetic engineering in animal cell culture; Animal cell preservation.
Immunology:
The origin of immunology; Inherent immunity; Humoral and cell mediated immunity; Primary and secondary lymphoid organ; Antigen; B and T cells and Macrophages; Major histocompatibility complex (MHC); Antigen processing and presentation; Synthesis of antibody and secretion; Molecular basis of antibody diversity; Polyclonal and monoclonal antibody; Complement; Antigen-antibody reaction; Regulation of immune response; Immune tolerance; Hyper sensitivity; Autoimmunity; Graft versus host reaction.
Recombinant DNA Technology:
Restriction and modification enzymes; Vectors: plasmid, bacteriophage and other viral vectors, cosmids, Ti plasmid, yeast artificial chromosome; cDNA and genomic DNA library; Gene isolation; Gene cloning; Expression of cloned gene; Transposons and gene targeting; DNA labeling; DNA sequencing; Polymerase chain reactions; DNA fingerprinting; Southern and northern blotting; In-situ hybridization; RAPD; RFLP; Site-directed mutagenesis; Gene transfer technologies; Gene therapy.
Bioinformatics:
Major bioinformatics resources (NCBI, EBI, ExPASy); Sequence and structure databases; Sequence analysis (biomolecular sequence file formats, scoring matrices, sequence alignment, phylogeny); Genomics and Proteomics (Large scale genome sequencing strategies; Comparative genomics; Understanding DNA microarrays and protein arrays); Molecular modeling and simulations (basic concepts including concept of force fields).
GATE 2012 Syllabus For Mechanical Engineering
Engineering Mathematics
Linear Algebra:
Matrix algebra, Systems of linear equations, Eigen values and eigen vectors.
Calculus:
Functions of single variable, Limit, continuity and differentiability, Mean value theorems, Evaluation of definite and improper integrals, Partial derivatives, Total derivative, Maxima and minima, Gradient, Divergence and Curl, Vector identities, Directional derivatives, Line, Surface and Volume integrals, Stokes, Gauss and Green's theorems.
Differential equations:
First order equations (linear and nonlinear), Higher order linear differential equations with constant coefficients, Cauchy's and Euler's equations, Initial and boundary value problems, Laplace transforms, Solutions of one dimensional heat and wave equations and Laplace equation.
Complex variables:
Analytic functions, Cauchy's integral theorem, Taylor and Laurent series.
Probability and Statistics:
Definitions of probability and sampling theorems, Conditional probability, Mean, median, mode and standard deviation, Random variables, Poisson, Normal and Binomial distributions.
Numerical Methods:
Numerical solutions of linear and non-linear algebraic equations Integration by trapezoidal and Simpson's rule, single and multi-step methods for differential equations.
Applied Mechanics and Design
Engineering Mechanics:
Free body diagrams and equilibrium; trusses and frames; virtual work; kinematics and dynamics of particles and of rigid bodies in plane motion, including impulse and momentum (linear and angular) and energy formulations; impact.
Strength of Materials:
Stress and strain, stress-strain relationship and elastic constants, Mohr's circle for plane stress and plane strain, thin cylinders; shear force and bending moment diagrams; bending and shear stresses; deflection of beams; torsion of circular shafts; Euler's theory of columns; strain energy methods; thermal stresses.
Theory of Machines:
Displacement, velocity and acceleration analysis of plane mechanisms; dynamic analysis of slider-crank mechanism; gear trains; flywheels.
Vibrations:
Free and forced vibration of single degree of freedom systems; effect of damping; vibration isolation; resonance, critical speeds of shafts.
Design:
Design for static and dynamic loading; failure theories; fatigue strength and the S-N diagram; principles of the design of machine elements such as bolted, riveted and welded joints, shafts, spur gears, rolling and sliding contact bearings, brakes and clutches.
Fluid Mechanics and Thermal Sciences
Fluid Mechanics:
Fluid properties; fluid statics, manometry, buoyancy; control-volume analysis of mass, momentum and energy; fluid acceleration; differential equations of continuity and momentum; Bernoulli's equation; viscous flow of incompressible fluids; boundary layer; elementary turbulent flow; flow through pipes, head losses in pipes, bends etc.
Heat-Transfer:
Modes of heat transfer; one dimensional heat conduction, resistance concept, electrical analogy, unsteady heat conduction, fins; dimensionless parameters in free and forced convective heat transfer, various correlations for heat transfer in flow over flat plates and through pipes; thermal boundary layer; effect of turbulence; radiative heat transfer, black and grey surfaces, shape factors, network analysis; heat exchanger performance, LMTD and NTU methods.
Thermodynamics:
Zeroth, First and Second laws of thermodynamics; thermodynamic system and processes; Carnot cycle. irreversibility and availability; behaviour of ideal and real gases, properties of pure substances, calculation of work and heat in ideal processes; analysis of thermodynamic cycles related to energy conversion.
Applications:
Power Engineering: Steam Tables, Rankine, Brayton cycles with regeneration and reheat. I.C. Engines: air-standard Otto, Diesel cycles. Refrigeration and air-conditioning: Vapour refrigeration cycle, heat pumps, gas refrigeration, Reverse Brayton cycle; moist air: psychrometric chart, basic psychrometric processes. Turbomachinery: Pelton-wheel, Francis and Kaplan turbines - impulse and reaction principles, velocity diagrams.
Manufacturing and Industrial Engineering
Engineering Materials
Structure and properties of engineering materials, heat treatment, stress-strain diagrams for engineering materials.
Metal Casting:
Design of patterns, moulds and cores; solidification and cooling; riser and gating design, design considerations.
Forming:
Plastic deformation and yield criteria; fundamentals of hot and cold working processes; load estimation for bulk (forging, rolling, extrusion, drawing) and sheet (shearing, deep drawing, bending) metal forming processes; principles of powder metallurgy.
Joining:
Physics of welding, brazing and soldering; adhesive bonding; design considerations in welding.
Machining and Machine Tool Operations:
Mechanics of machining, single and multi-point cutting tools, tool geometry and materials, tool life and wear; economics of machining; principles of non-traditional machining processes; principles of work holding, principles of design of jigs and fixtures
Metrology and Inspection:
Limits, fits and tolerances; linear and angular measurements; comparators; gauge design; interferometry; form and finish measurement; alignment and testing methods; tolerance analysis in manufacturing and assembly.
Computer Integrated Manufacturing:
Basic concepts of CAD/CAM and their integration tools.
Production Planning and Control:
Forecasting models, aggregate production planning, scheduling, materials requirement planning.
Inventory Control:
Deterministic and probabilistic models; safety stock inventory control systems.
Operations Research:
Linear programming, simplex and duplex method, transportation, assignment, network flow models, simple queuing models, PERT and CPM.
GATE Electrical Engineering Syllabus
Electrical Engineering
Linear Algebra:
Matrix Algebra, Systems of linear equations, Eigen values and eigen vectors.
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, Surface and Volume integrals, Stokes, Gauss and Green's theorems.
Differential equations:
First order equation (linear and nonlinear), Higher order linear differential equations with constant coefficients, Method of variation of parameters, Cauchy's and Euler's equations, Initial and boundary value problems, Partial Differential Equations and variable separable method.
Complex variables:
Analytic functions, Cauchy's integral theorem and integral formula, Taylor's and Laurent' series, Residue theorem, solution integrals.
Probability and Statistics:
Sampling theorems, Conditional probability, Mean, median, mode and standard deviation, Random variables, Discrete and continuous distributions, Poisson, Normal and Binomial distribution, Correlation and regression analysis.
Numerical Methods:
Solutions of non-linear algebraic equations, single and multi-step methods for differential equations.
Transform Theory:
Fourier transform, Laplace transform, Z-transform.
Electrical Engineering
Electric Circuits and Fields:
Network graph, KCL, KVL, node and mesh analysis, transient response of dc and ac networks; sinusoidal steady-state analysis, resonance, basic filter concepts; ideal current and voltage sources, Thevenin's, Norton's and Superposition and Maximum Power Transfer theorems, two-port networks, three phase circuits; Gauss Theorem, electric field and potential due to point, line, plane and spherical charge distributions; Ampere's and Biot-Savart's laws; inductance; dielectrics; capacitance.
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; Fourier, Laplace and Z transforms.
Electrical Machines:
Single phase transformer - equivalent circuit, phasor diagram, tests, regulation and efficiency; three phase transformers - connections, parallel operation; auto-transformer; energy conversion principles; DC machines - types, windings, generator characteristics, armature reaction and commutation, starting and speed control of motors; three phase induction motors - principles, types, performance characteristics, starting and speed control; single phase induction motors; synchronous machines - performance, regulation and parallel operation of generators, motor starting, characteristics and applications; servo and stepper motors.
Power Systems:
Basic power generation concepts; transmission line models and performance; cable performance, insulation; corona and radio interference; distribution systems; per-unit quantities; bus impedance and admittance matrices; load flow; voltage control; power factor correction; economic operation; symmetrical components; fault analysis; principles of over-current, differential and distance protection; solid state relays and digital protection; circuit breakers; system stability concepts, swing curves and equal area criterion; HVDC transmission and FACTS concepts.
Control Systems:
Principles of feedback; transfer function; block diagrams; steady-state errors; Routh and Niquist techniques; Bode plots; root loci; lag, lead and lead-lag compensation; state space model; state transition matrix, controllability and observability.
Electrical and Electronic Measurements:
Bridges and potentiometers; PMMC, moving iron, dynamometer and induction type instruments; measurement of voltage, current, power, energy and power factor; instrument transformers; digital voltmeters and multimeters; phase, time and frequency measurement; Q-meters; oscilloscopes; potentiometric recorders; error analysis.
Analog and Digital Electronics:
Characteristics of diodes, BJT, FET; 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; multi-vibrators; sample and hold circuits; A/D and D/A converters; 8-bit microprocessor basics, architecture, programming and interfacing.
Power Electronics and Drives:
Semiconductor power diodes, transistors, thyristors, triacs, GTOs, MOSFETs and IGBTs - static characteristics and principles of operation; triggering circuits; phase control rectifiers; bridge converters - fully controlled and half controlled; principles of choppers and inverters; basis concepts of adjustable speed dc and ac drives.
GATE 2012 Syllabus For Electronics and Communication Engineering
Engineering Mathematics
Linear Algebra:
Matrix Algebra, Systems of linear equations, Eigen values and eigen vectors.
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, Surface and Volume integrals, Stokes, Gauss and Green's theorems.
Differential equations:
First order equation (linear and nonlinear), Higher order linear differential equations with constant coefficients, Method of variation of parameters, Cauchy's and Euler's equations, Initial and boundary value problems, Partial Differential Equations and variable separable method.
Complex variables:
Analytic functions, Cauchy's integral theorem and integral formula, Taylor's and Laurent' series, Residue theorem, solution integrals.
Probability and Statistics:
Sampling theorems, Conditional probability, Mean, median, mode and standard deviation, Random variables, Discrete and continuous distributions, Poisson, Normal and Binomial distribution, Correlation and regression analysis.
Numerical Methods:
Solutions of non-linear algebraic equations, single and multi-step methods for differential equations.
Transform Theory:
Fourier transform, Laplace transform, Z-transform.
Electronics and Communication Engineering
Networks:
Network graphs: matrices associated with graphs; incidence, fundamental cut set and fundamental circuit matrices. Solution methods: nodal and mesh analysis. Network theorems: superposition, Thevenin and Norton's maximum power transfer, Wye-Delta transformation. Steady state sinusoidal analysis using phasors. Linear constant coefficient differential equations; time domain analysis of simple RLC circuits, Solution of network equations using Laplace transform: frequency domain analysis of RLC circuits. 2-port network parameters: driving point and transfer functions. State equations for networks.
Electronic Devices:
Energy bands in silicon, intrinsic and extrinsic silicon. Carrier transport in silicon: diffusion current, drift current, mobility, and resistivity. Generation and recombination of carriers. p-n junction diode, Zener diode, tunnel diode, BJT, JFET, MOS capacitor, MOSFET, LED, p-I-n and avalanche photo diode, Basics of LASERs. Device technology: integrated circuits fabrication process, oxidation, diffusion, ion implantation, photolithography, n-tub, p-tub and twin-tub CMOS process.
Analog Circuits:
Small Signal Equivalent circuits of diodes, BJTs, MOSFETs and analog CMOS. Simple diode circuits, clipping, clamping, rectifier. Biasing and bias stability of transistor and FET amplifiers. Amplifiers: single-and multi-stage, differential and operational, feedback, and power. Frequency response of amplifiers. Simple op-amp circuits. Filters. Sinusoidal oscillators; criterion for oscillation; single-transistor and op-amp configurations. Function generators and wave-shaping circuits, 555 Timers. Power supplies.
Digital circuits:
Boolean algebra, minimization of Boolean functions; logic gates; digital IC families (DTL, TTL, ECL, MOS, CMOS). Combinatorial circuits: arithmetic circuits, code converters, multiplexers, decoders, PROMs and PLAs. Sequential circuits: latches and flip-flops, counters and shift-registers. Sample and hold circuits, ADCs, DACs. Semiconductor memories. Microprocessor(8085): architecture, programming, memory and I/O interfacing.
Signals and Systems:
Definitions and properties of Laplace transform, continuous-time and discrete-time Fourier series, continuous-time and discrete-time Fourier Transform, DFT and FFT, z-transform. Sampling theorem. Linear Time-Invariant (LTI) Systems: definitions and properties; causality, stability, impulse response, convolution, poles and zeros, parallel and cascade structure, frequency response, group delay, phase delay. Signal transmission through LTI systems.
Control Systems:
Basic control system components; block diagrammatic description, reduction of block diagrams. Open loop and closed loop (feedback) systems and stability analysis of these systems. Signal flow graphs and their use in determining transfer functions of systems; transient and steady state analysis of LTI control systems and frequency response. Tools and techniques for LTI control system analysis: root loci, Routh-Hurwitz criterion, Bode and Nyquist plots. Control system compensators: elements of lead and lag compensation, elements of Proportional-Integral-Derivative (PID) control. State variable representation and solution of state equation of LTI control systems.
Communications:
Random signals and noise: probability, random variables, probability density function, autocorrelation, power spectral density. Analog communication systems: amplitude and angle modulation and demodulation systems, spectral analysis of these operations, superheterodyne receivers; elements of hardware, realizations of analog communication systems; signal-to-noise ratio (SNR) calculations for amplitude modulation (AM) and frequency modulation (FM) for low noise conditions. Fundamentals of information theory and channel capacity theorem. Digital communication systems: pulse code modulation (PCM), differential pulse code modulation (DPCM), digital modulation schemes: amplitude, phase and frequency shift keying schemes (ASK, PSK, FSK), matched filter receivers, bandwidth consideration and probability of error calculations for these schemes. Basics of TDMA, FDMA and CDMA and GSM.
Electromagnetics:
Elements of vector calculus: divergence and curl; Gauss' and Stokes' theorems, Maxwell's equations: differential and integral forms. Wave equation, Poynting vector. Plane waves: propagation through various media; reflection and refraction; phase and group velocity; skin depth. Transmission lines: characteristic impedance; impedance transformation; Smith chart; impedance matching; S parameters, pulse excitation. Waveguides: modes in rectangular waveguides; boundary conditions; cut-off frequencies; dispersion relations. Basics of propagation in dielectric waveguide and optical fibers. Basics of Antennas: Dipole antennas; radiation pattern; antenna gain.
GATE 2012 Computer Sc. and Information Technology Syllabus
Engineering Mathematics
Mathematical Logic:
Propositional Logic; First Order Logic.
Probability:
Conditional Probability; Mean, Median, Mode and Standard Deviation; Random Variables; Distributions; uniform, normal, exponential, Poisson, Binomial.
Set Theory & Algebra:
Sets; Relations; Functions; Groups; Partial Orders; Lattice; Boolean Algebra.
Combinatorics:
Permutations; Combinations; Counting; Summation; generating functions; recurrence relations;asymptotics.
Graph Theory:
Connectivity; spanning trees; Cut vertices & edges; covering; matching; independent sets; Colouring; Planarity; Isomorphism.
Linear Algebra:
Algebra of matrices, determinants, systems of linear equations, Eigen values and Eigen vectors.
Numerical Methods:
LU decomposition for systems of linear equations; numerical solutions of non-linear algebraic equations by Secant, Bisection and Newton-Raphson Methods; Numerical integration by trapezoidal and Simpson's rules.
Calculus:
Limit, Continuity & differentiability, Mean value Theorems, Theorems of integral calculus, evaluation of definite & improper integrals, Partial derivatives, Total derivatives, maxima & minima.
Computer Science and Information Technology
Digital Logic:
Logic functions, Minimization, Design and synthesis of combinational and sequential circuits; Number representation and computer arithmetic (fixed and floating point).
Computer Organization and Architecture:
Machine instructions and addressing modes, ALU and data-path, CPU control design, Memory interface, I/O interface (Interrupt and DMA mode), Instruction pipelining, Cache and main memory, Secondary storage.
Programming and Data Structures:
Programming in C; Functions, Recursion, Parameter passing, Scope, Binding; Abstract data types, Arrays, Stacks, Queues, Linked Lists, Trees, Binary search trees, Binary heaps.
Algorithms:
Analysis, Asymptotic notation, Notions of space and time complexity, Worst and average case analysis; Design: Greedy approach, Dynamic programming, Divide-and-conquer; Tree and graph traversals, Connected components, Spanning trees, Shortest paths; Hashing, Sorting, Searching. Asymptotic analysis (best, worst, average cases) of time and space, upper and lower bounds, Basic concepts of complexity classes P, NP, NP-hard, NP-complete.
Theory of Computation:
Regular languages and finite automata, Context free languages and Push-down automata, Recursively enumerable sets and Turing machines, Undecidability.
Compiler Design:
Lexical analysis, Parsing, Syntax directed translation, Runtime environments, Intermediate and target code generation, Basics of code optimization.
Operating System:
Processes, Threads, Inter-process communication, Concurrency, Synchronization, Deadlock, CPU scheduling, Memory management and virtual memory, File systems, I/O systems, Protection and security.
Databases:
ER-model, Relational model (relational algebra, tuple calculus), Database design (integrity constraints, normal forms), Query languages (SQL), File structures (sequential files, indexing, B and B+ trees), Transactions and concurrency control.
Information Systems and Software Engineering:
information gathering, requirement and feasibility analysis, data flow diagrams, process specifications, input/output design, process life cycle, planning and managing the project, design, coding, testing, implementation, maintenance.
Computer Networks:
ISO/OSI stack, LAN technologies (Ethernet, Token ring), Flow and error control techniques, Routing algorithms, Congestion control, TCP/UDP and sockets, IP(v4), Application layer protocols (icmp, dns, smtp, pop, ftp, http); Basic concepts of hubs, switches, gateways, and routers. Network security basic concepts of public key and private key cryptography, digital signature, firewalls.
Web technologies:
HTML, XML, basic concepts of client-server computing.
Engineering Mathematics
Linear Algebra:
Matrix algebra, Systems of linear equations, Eigen values and eigenvectors.
Calculus:
Functions of single variable, Limit, continuity and differentiability, Mean value theorems, Evaluation of definite and improper integrals, Partial derivatives, Total derivative, Maxima and minima, Gradient, Divergence and Curl, Vector dentities, Directional derivatives, Line, Surface and Volume integrals, Stokes, Gauss and Green's theorems.
Differential equations:
First order equations (linear and nonlinear), Higher order linear differential equations with constant coefficients, Cauchy's and Euler's equations, Initial and boundary value problems, Laplace transforms, Solutions of one dimensional heat and wave equations and Laplace equation.
Complex variables:
Analytic functions, Cauchy's integral theorem, Taylor and Laurent series, Residue theorem.
Probability and Statistics:
Definitions of probability and sampling theorems, Conditional probability, Mean, median, mode and standard deviation, Random variables, Poisson, Normal and Binomial distributions.
Numerical Methods:
Numerical solutions of linear and non-linear algebraic equations Integration by trapezoidal and Simpson's rule, single and multi-step methods for differential equations.
Chemical Engineering
Process Calculations and Thermodynamics:
Laws of conservation of mass and energy; use of tie components; recycle, bypass and purge calculations; degree of freedom analysis. First and Second laws of thermodynamics. First law application to close and open systems. Second law and Entropy Thermodynamic properties of pure substances: equation of state and departure function, properties of mixtures: partial molar properties, fugacity, excess properties and activity coefficients; phase equilibria: predicting VLE of systems; chemical reaction equilibria.
Fluid Mechanics and Mechanical Operations:
Fluid statics, Newtonian and non-Newtonian fluids, Bernoulli equation, Macroscopic friction factors, energy balance, dimensional analysis, shell balances, flow through pipeline systems, flow meters, pumps and compressors, packed and fluidized beds, elementary boundary layer theory, size reduction and size separation; free and hindered settling; centrifuge and cyclones; thickening and classification, filtration, mixing and agitation; conveying of solids.
Heat Transfer:
Conduction, convection and radiation, heat transfer coefficients, steady and unsteady heat conduction, boiling, condensation and evaporation; types of heat exchangers and evaporators and their design.
Mass Transfer:
Fick's laws, molecular diffusion in fluids, mass transfer coefficients, film, penetration and surface renewal theories; momentum, heat and mass transfer analogies; stagewise and continuous contacting and stage efficiencies; HTU & NTU concepts design and operation of equipment for distillation, absorption, leaching, liquid-liquid extraction, drying, humidification, dehumidification and adsorption.
Chemical Reaction Engineering:
Theories of reaction rates; kinetics of homogeneous reactions, interpretation of kinetic data, single and multiple reactions in ideal reactors, non-ideal reactors; residence time distribution, single parameter model; non-isothermal reactors; kinetics of heterogeneous catalytic reactions; diffusion effects in catalysis.
Instrumentation and Process Control:
Measurement of process variables; sensors, transducers and their dynamics, transfer functions and dynamic responses of simple systems, process reaction curve, controller modes (P, PI, and PID); control valves; analysis of closed loop systems including stability, frequency response and controller tuning, cascade, feed forward control.
Plant Design and Economics:
Process design and sizing of chemical engineering equipment such as compressors, heat exchangers, multistage contactors; principles of process economics and cost estimation including total annualized cost, cost indexes, rate of return, payback period, discounted cash flow, optimization in design.
Chemical Technology:
Inorganic chemical industries; sulfuric acid, NaOH, fertilizers (Ammonia, Urea, SSP and TSP); natural products industries (Pulp and Paper, Sugar, Oil, and Fats); petroleum refining and petrochemicals; polymerization industries; polyethylene, polypropylene, PVC and polyester synthetic fibers.
Engineering Mathematics
Structural Engineering
Geotechnical Engineering
Water Resources Engineering
Environmental Engineering
Transportation Engineering
Surveying
GATE Examination Type
The GATE examination consists of a single paper of 3 hours duration which contains 65 questions carrying a maximum of 100 marks.The question paper will consist of only objective questions.In all papers other than AE, AG, AR, GG, MN and TF, all the questions are of multiple choice type.In AE, AG, AR, GG, MN and TF papers, the question paper will consist of questions of multiple choice type and also some questions of numerical answer type. For multiple choice type questions, each question will have four choices for the answer.For numerical answer type questions, each question will have a number as the answer.The examination for the papers with codes AE,AG,AR,GG,MN and TF will be carried out ONLINE using computers where the candidates will be required to enter the answer for each question using mouse. For all other papers,the candidates will have to mark the correct choice on an Optical Response Sheet (ORS) by darkening the appropriate bubble against each question. There will be negative marking for each wrong answer,except for the numerical answer type questions.
Each GATE paper shall have a General Aptitude (GA) component carrying 15 marks
Candidates have to apply only Online. Details of the application fee and the steps in the application process are given below.
General/OBC:Rs.1000/-
SC/ST/PD:Rs.500/-
Application Process:
Step 1:Decide Payment Option
Gateway Payment:
Payment can be made using netbanking. Bank service charge is extra (maximum of Rs.30/-)
Challan Payment:
Payment by cash at ICICI, Indian Bank or State Bank of India branches. Bank service charge is extra (maximum of Rs.25/-)
Step 2: Obtain SC / ST / PD Certificate (if applicable)
Authorities empowered to issue Certificates
Step 3: Apply Online
Candidates must follow the instructions provided while applying online.
At the end of this process, a PDF file will be generated with the following pages:
Page-1: Instructions
Page-2: GATE 2012 Application - GATE Copy
Page-3: GATE 2012 Application - Candidate's Copy
Page-4: Address Slip of respective zonal GATE office
Page-5: Bank Challan (for Challan Payment option only)
Take a print out of the entire file on A4 size white sheets using a laser/inkjet printer.
Step 4: Cash Payment: (only for Challan Payment option)
The bank challan (Page-5) will be printed in triplicate. Take it to any one of the branches of ICICI, Indian Bank or State Bank of India (as opted by the candidate) and pay the fees. Bank will retain a copy and will return two copies to you. In those two copies, retain the Candidate's copy with you and attach the GATE Copy with the application.
Step 5:
Paste your recent photograph (3.5 cm X 3.5 cm) in the designated place of Page-2. Before pasting, please write your name and application number on the backside of the photo with black ball point pen.
Sign at the designated place of Page-2.
Paste Page-4 on top of a 10 inch x 12 inch size laminated envelope.
Step 6: Post/Submission
Before posting your application form, make sure that, in addition to the other relevant attachments, you have attached either a copy of the degree certificate or a certificate from your college principal as indicated below:
1.Candidates should submit a copy of the degree certificate or provisional certificate if they have passed their qualifying degree in 2011 or before.
2.Candidates with the following eligibility conditions should submit a certificate signed by the Principal of the college, where the candidate is studying, clearly indicating the year of passing of the candidate in the qualifying degree.
A.Students in the final year of Bachelor's degree programme in Engineering/Technology/ Architecture (4 years after 10+2).
B.Students in the final year of Bachelor's degree programme in Engineering/Technology/Architecture (Post-B.Sc./Post-Diploma).
C.Students in the final year of Master's degree programmes in any branch of Science/Mathematics/ Statistics/Computer Applications or equivalent.
D.Students in the second or higher year of the Four-year Integrated Master's degree programme (Post-B.Sc.) in Engineering/Technology.
E.Students in the fourth or higher year of Five-year Integrated Master's degree programme or Dual Degree programme in Engineering/Technology.
To download the format of the certificate to be sent by the candidates, click here.
Candidates with backlog: Candidates with a backlog of papers should submit a copy of the marks sheet of final semester / final year or copy of the course completion certificate or a letter from the principal indicating that the student has a backlog and will be completing the degree in 2012.
Duly filled-in Application with appropriate enclosures must be sent by Speed Post (preferably) or by Registered Post to The Chairman, GATE of the Zone corresponding to the 1st Choice of Examination City, so as to reach on or before Monday, 24th October, 2011.
Click Here for Apply Online
Engineering Mathematics
Farm Machinery and Power
Soil and Water Conservation Engineering
Agricultural Processing and Food Engineering
GATE 2012 Aerospace Engineering Syllabus
Engineering Mathematics
Linear Algebra:
Matrix algebra, systems of linear equations, eigen values and eigen vectors.
Calculus:
Functions of single variable, limit, continuity and differentiability, mean value theorems, evaluation of definite and improper integrals, partial derivatives, total derivative, maxima and minima, gradient, divergence and curl, vector identities, directional derivatives, line, surface and volume integrals. Theorems of Stokes, Gauss and Green.
Differential Calculus:
First order linear and nonlinear equations, higher order linear ODEs with constant coefficients, Cauchy and Euler equations, initial and boundary value problems, Laplace transforms. Partial differential equations and separation of variables methods.
Numerical methods:
Numerical solution of linear and nonlinear algebraic equations, integration by trapezoidal and Simpson rule, single and multi-step methods for differential equations.
Flight Mechanics
Atmosphere:
Properties, standard atmosphere. Classification of aircraft. Airplane (fixed wing aircraft) configuration and various parts.
Airplane performance:
Pressure altitude; equivalent, calibrated, indicated air speeds; Primary flight instruments: Altimeter, ASI, VSI, Turn-bank indicator. Drag polar; take off and landing; steady climb & descent,-absolute and service ceiling; cruise, cruise climb, endurance or loiter; load factor, turning flight, V-n diagram; Winds: head, tail & cross winds.
Static stability:
Angle of attack, sideslip; roll, pitch & yaw controls; longitudinal stick fixed & free stability, horizontal tail position and size; directional stability, vertical tail position and size; dihedral stability. Wing dihedral, sweep & position; hinge moments, stick forces.
Dynamic stability:
Euler angles; Equations of motion; aerodynamic forces and moments, stability & control derivatives; decoupling of longitudinal and lat-directional dynamics; longitudinal modes; lateral-directional modes.
Space Dynamics
Central force motion, determination of trajectory and orbital period in simple cases. Orbit transfer, in-plane and out-of-plane. Elements of rocket motor performance.
Aerodynamics
Basic Fluid Mechanics:
Incompressible irrotational flow, Helmholtz and Kelvin theorem, singularities and superposition, viscous flows, boundary layer on a flat plate.
Airfoils and wings:
Classification of airfoils, aerodynamic characteristics, high lift devices, Kutta Joukowski theorem; lift generation; thin airfoil theory; wing theory; induced drag; qualitative treatment of low aspect ratio wings.
Viscous Flows:
Flow separation, introduction to turbulence, transition, structure of a turbulent boundary layer.
Compressible Flows:
Dynamics and Thermodynamics of I-D flow, isentropic flow, normal shock, oblique shock, Prandtl-Meyer flow, flow in nozzles and diffusers, inviscid flow in a c-d nozzle, flow in diffusers. subsonic and supersonic airfoils, compressibility effects on lift and drag, critical and drag divergence Mach number, wave drag.
Wind Tunnel Testing:
Measurement and visualisation techniques.
Structures
Stress and Strain:
Equations of equilibrium, constitutive law, strain-displacement relationship, compatibility equations, plane stress and strain, Airy's stress function.
Flight Vehicle Structures:
Characteristics of aircraft structures and materials, torsion, bending and flexural shear. Flexural shear flow in thin-walled sections. Buckling. Failure theories. Loads on aircraft.
Structural Dynamics:
Free and forced vibration of discrete systems. Damping and resonance. Dynamics of continuous systems.
Propulsion
Thermodynamics of Aircraft Gas Turbine engines, thrust and thrust augmentation.
Turbomachinery:
Axial compressors and turbines, centrifugal pumps and compressors.
Aerothermodynamics of non rotating propulsion components:
Intakes, combustor and nozzle. Thermodynamics of ramjets and scramjets. Elements of rocket propulsion.
Syllabus for General Aptitude (GA)
(Common to all papers)
Verbal Ability:
English grammar, sentence completion, verbal analogies, word groups, instructions, critical reasoning and verbal deduction.
Numerical Ability:
Numerical computation, numerical estimation, numerical reasoning and data interpretation.
Multiple Choice Questions
Multiple choice questions in all papers and sections will contain four answers, of which only one is correct. The types of questions in a paper may be based on following logic:
(i) Recall:
These are based on facts, principles, formulae or laws of the discipline. The candidate is expected to be able to obtain the answer either from his/her memory of the subject or at most from a one-line computation.
Example
Q. During machining maximum heat is produced
(A) in flank face (B) in rake face
(C) in shear zone (D) due to friction between chip and tool.
(ii) Comprehension:
These questions will test the candidate's understanding of the basics of his/her field, by requiring him/her to draw simple conclusions from fundamental ideas.
Example
Q. A DC motor requires a starter in order
(A) to develop a starting torque
(B) to compensate for auxiliary field ampere turns
(C) to limit armature current at starting
(D) to provide regenerative braking
(iii) Application:
In these questions, the candidate is expected to apply his/her knowledge either through computation or by logical reasoning.
Example:
Q. The sequent depth ratio of a hydraulic jump in a rectangular channel is 16.48. The Froude number at the beginning of the jump is:
(A) 10.0 (B) 5.0
(C) 12.0 (D) 8.0
(iv) Analysis and Synthesis:
These can be linked questions, where the answer to the first question of the pair is required in order to answer its successor. Or these can be common data questions, in which two questions share the same data but can be solved independently of one another.
Common data questions:
Multiple questions may be linked to a common data problem, passage and the like. Two or three questions can be formed from the given common data problem. Each question is independent and its solution obtainable from the above problem data/passage directly. (Answer of the previous question is not required to solve the next question). Each question under this group will carry two marks.
Example
Common Data, for instance, Questions 48 and 49 in main paper:
Let X and Y be jointly distributed random variables such that the conditional distribution of Y, given X=x, is uniform on the interval (x-1,x+1). Suppose E(X)=1 and Var(X)= 5/3
First question using common data:
Q.48 The mean of the random variable Y is
(A) 1/2 (B) 1 (C) 3/2 (D) 2
Second question using common data:
Q.49 The variance of the random variable Y is
(A) 1/2 (B) 2/3 (C) 1 (D) 2
Linked answer questions:
These questions are of problem solving type. A problem statement is followed by two questions based on the problem statement. The two questions are designed such that the solution to the second question depends upon the answer to the first one. In other words, the first answer is an intermediate step in working out the second answer. Each question in such linked answer questions will carry two marks.
Example:
Statement for Linked Answer Questions, for instance, for Questions 52 and 53 in Main Paper:
The open loop transfer function of a unity feedback control system is given by
G(s)H(S)=K/{s(s+1)(2S+1)(3S+1)}
First question of the pair:
Q.52 The value of K which will cause sustained oscillations in the closed loop system is
A.60/121 B.70/121 C.80/121 D.90/121
GATE 2012 Impotrant Dates:
The city codes will be useful to the candidates while filling the application forms. The choice of the examination city depends on the examination type (online / offline examination). Even for the cities where both online and offline examinations are to be conducted, the city codes will be different for online and offline examinations.
After the submission of application, requests for change of examination city will be accepted till December 30, 2011 with a fee of Rs.400/- to be paid in the form of demand draft (payment details) to the respective zonal GATE office.
Offline Examination Cities:
For candidates whose choice of GATE paper is one of the following: BT, CE, CH, CS, CY, EC, EE, IN, MA, ME, MT, PH, PI, XE and XL.
Click Here for Offline Examination Cities:
Examination Cities:
The city codes will be useful to the candidates while filling the application forms. The choice of the examination city depends on the examination type (online / offline examination). Even for the cities where both online and offline examinations are to be conducted, the city codes will be different for online and offline examinations.
After the submission of application, requests for change of examination city will be accepted till December 30, 2011 with a fee of Rs.400/- to be paid in the form of demand draft (payment details) to the respective zonal GATE office.
Online Examination Cities:
Online Examination Cities (Codewise List)
For candidates whose choice of GATE paper is one of the following: AE, AG, AR, GG, MN and TF.
Eligibility for GATE Examination
The following categories of candidates are eligible to appear for GATE 2012:
1.Bachelor's degree holders in Engineering/Technology/ Architecture (4 years after 10+2) and those who are in the final year of such programmes.
2.Bachelor's degree holders in Engineering/Technology/Architecture (Post-B.Sc./Post-Diploma) and those who are in the final year of such programmes.
3.Master's degree holders in any branch of Science/Mathematics/ Statistics/Computer Applications or equivalent and those who are in the final year of such programmes.
4.Candidates in the second or higher year of the Four-year Integrated Master's degree programme (Post-B.Sc.) in Engineering/Technology.
5.Candidates in the fourth or higher year of Five-year Integrated Master's degree programme or Dual Degree programme in Engineering/Technology.
6.Candidates with qualifications obtained through examinations conducted by professional societies recognized by UPSC/AICTE (e.g. AMIE by Institute of Engineers (India); AMICE by Institute of Civil Engineers (India)) as equivalent to B.E./B.Tech. Those who have completed section A or equivalent of such professional courses are also eligible.
Pattern of Question Papers and Marking
The examination for the papers with codes AE, AG, AR, GG, MN and TF will be carried out ONLINE using computers where the candidates will be required to enter the answer for each question using mouse. For all other papers, the candidates will have to mark the correct choice on an Optical Response Sheet (ORS) by darkening the appropriate bubble against each question.
In the ONLINE papers, the question paper will consist of questions of multiple choice type and numerical answer type. For multiple choice type questions, each question will have four choices for the answer. For numerical answer type questions, each question will have a number as the answer and choices will not be given.
GATE 2012 would contain questions of four different types in various papers:
Multiple choice questions carrying 1 or 2 marks each.
Common data questions, where two successive questions use the same set of input data.
Linked answer questions, where the answer to the first question of the pair is required in order to answer its successor.
Numerical answer questions, where the answer is a number, to be entered by the candidate.
Examples of such questions can be found in Question Types.
In all the papers, there will be a total of 65 questions carrying 100 marks, out of which 10 questions carrying 15 marks in General Aptitude (GA) are compulsory.
In the papers bearing the codes AE, AG, BT, CE, CH, CS, EC, EE, GG, IN, ME, MN, MT, PI, TF and XE, the Engineering Mathematics will carry 15 % of the total marks, the General Aptitude section will carry 15 % of the total marks and the remaining 70 % of the total marks is devoted to the subject of the paper.
In the papers bearing the codes AR, CY, GG, MA, PH and XL, the General Aptitude section will carry 15 % of the total marks and the remaining 85 % of the total marks is devoted to the subject of the paper.
Marking:
For 1 mark multiple choice questions, 1/3 mark will be deducted for a wrong answer. Likewise, for 2 marks multiple choice questions, 2/3 mark will be deducted for a wrong answer. However, for the linked answer question pair, where each question carries 2 marks, 2/3 mark will be deducted for a wrong answer to the first question only. There is no negative marking for wrong answer to the second question of the linked answer question pair. If the first question in the linked pair is wrongly answered or is unattempted, then the answer to the second question in the pair will not be evaluated. There is no negative marking for numerical answer type questions.
Pattern of Question Papers
General Aptitude (GA) Section:
In all papers, GA questions are of multiple choice type, and carry a total of 15 marks. The GA section includes 5 questions carrying 1 mark each (sub-total 5 marks) and 5 questions carrying 2-marks each (sub-total 10 marks)
Question papers other than GG, XE and XL:
These papers would contain 25 multiple choice questions carrying one mark each (sub-total 25 marks) and 30 multiple choice questions carrying two marks each (sub-total 60 marks). Out of these, two pairs of questions would be common data questions, and two pairs of questions would be linked-answer questions. In the ONLINE papers, the question paper will consist of questions of multiple choice type and numerical answer type. For multiple choice type questions, each question will have four choices for the answer. For numerical answer type questions, each question will have a number as the answer and choices will not be given.
GG (Geology and Geophysics) Paper:
Apart from the General Aptitude (GA) section, the question paper consists of two parts: Part A and Part B. Part A is common for all candidates. Part B contains two sections: Section 1 (Geology) and Section 2 (Geo-physics). Candidates will have to attempt questions in Part A and either Section 1 or Section 2 in Part B.
Part A consists of 25 multiple choice questions carrying 1-mark each (sub-total 25 marks). Each section in Part B (Section 1 and Section 2) consists of 30 multiple choice questions carrying 2-marks each (sub-total 60 marks). Out of these, two pairs of questions would be common data questions, and two pairs of questions would be linked-answer questions.
XE Paper (Engineering Sciences):
In XE paper, Engineering Mathematics section (Section A) is compulsory. This section contains 11 multiple choice questions carrying a total of 15 marks: 7 questions carrying 1-mark each (sub-total 7 marks), and 4 questions carrying 2-marks each (sub-total 8 marks).
Each of the other sections of the XE paper (Sections B through G) contains 22 questions carrying a total of 35 marks: 9 questions carrying 1-mark each (sub-total 9 marks) and 13 questions carrying 2-marks each (sub-total 26 marks). Out of the 2-mark questions, 2 pairs are common data questions and 1 pair is linked answer questions.
XL Paper (Life Sciences):
In XL paper, Chemistry section (Section H) is compulsory. This section contains 15 multiple choice questions carrying a total of 25 marks: 5 questions carrying 1 mark each (sub-total 5 marks) and 10 questions carrying 2-marks each (sub-total 20 marks). Out of the 2-mark questions, 1 pair is common data questions, and 1 pair is linked answer questions.
Each of the other sections of the XL paper (Sections I through M) contains 20 multiple choice questions carrying a total of 30 marks: 10 questions carrying 1-mark each (sub-total 10 marks) and 10 questions carrying 2-marks each (sub-total 20 marks).
What is New in GATE 2012
Application Process:
In GATE 2012, candidates need to register and fill the application ONLINE only by accessing the zonal GATE websites of IISc and seven IITs. The application process is complete only when a print out of the filled ONLINE application with the candidate's signature and a good quality photo affixed in the appropriate place is received by the respective GATE office along with necessary documents, if any, on or before 24 October 2011. Please note that sale of application forms through banks and GATE office counters has been discontinued.
Downloadable Admit Card:
Sending Admit cards by post has been discontinued from this year. Admit cards can only be downloaded from the zonal GATE websites from 2nd January 2012. Bring the admit card to the test center along with at least one original (not photocopied / scanned copy) and valid (not expired) photo identification.
Use of black ink ball point pen:
The use of pencils to darken the bubbles in the answer sheet has been discontinued from this year. Candidates should use only black ink ball point pen for darkening of the bubbles in the answer sheet. Since bubbles darkened by the black ink ball point pen cannot be erased, candidates should darken the bubbles in the answer sheet very carefully.
ONLINE examination in two additional papers:
In GATE 2011, the papers with codes GG, TF, AE and MN had ONLINE examination. In GATE 2012, two additional papers, AR and AG, will also have ONLINE examination. The ONLINE examination will be conducted in two sessions on Sunday, January 29, 2012.
Forenoon session (09:00 hrs to 12:00 hrs): AR, GG and TF.
Afternoon session (14:00 hrs to 17:00 hrs): AE, AG and MN.
Numerical answer type questions in ONLINE papers:
In the ONLINE papers (AE, AG, AR, GG, MN and TF), the question paper will consist of questions of multiple choice type and questions of numerical answer type. For multiple choice type questions, each question will have four choices for the answer. For numerical answer type questions, each question will have a number as the answer. The number of numerical answer type questions may vary between 5 and 10 in each question paper.
Pre-final year students:
Pre-final year students are not eligible to write GATE 2012. For details, refer to eligibility for GATE exam
Graduate Aptitude Test in Engineering - GATE 2012
Graduate Aptitude Test in Engineering (GATE) is an all India examination administered and conducted jointly by the Indian Institute of Science and seven Indian Institutes of Technology on behalf of the National Coordination Board - GATE, Department of Higher Education, Ministry of Human Resource Development (MHRD), Government of India.
The GATE committee, which comprises of representatives from the administering institutes, is the sole authority for regulating the examination and declaring the results.
GATE is conducted through the constitution of eight zones. The zones and the corresponding administrative institutes are:
Zone-1: Indian Institute of Science Bengaluru
Zone-2: Indian Institute of Technology Bombay
Zone-3: Indian Institute of Technology Delhi
Zone-4: Indian Institute of Technology Guwahati
Zone-5: Indian Institute of Technology Kanpur
Zone-6: Indian Institute of Technology Kharagpur
Zone-7: Indian Institute of Technology Madras
Zone-8: Indian Institute of Technology Roorkee
ELIGIBILITY FOR GATE EXAMINATION
The following categories of candidates are eligible to appear for GATE 2012:
Bachelor's degree holders in Engineering/Technology/ Architecture (4 years after 10+2) and those who are in the final year of such programmes.
Bachelor's degree holders in Engineering/Technology/Architecture (Post-B.Sc./Post-Diploma) and those who are in the final year of such programmes.
Master's degree holders in any branch of Science/Mathematics/ Statistics/Computer Applications or equivalent and those who are in the final year of such programmes.
Candidates in the second or higher year of the Four-year Integrated Master's degree programme (Post-B.Sc.) in Engineering/Technology.
Candidates in the fourth or higher year of Five-year Integrated Master's degree programme or Dual Degree programme in Engineering/Technology.
Candidates with qualifications obtained through examinations conducted by professional societies recognized by UPSC/AICTE (e.g. AMIE by Institute of Engineers (India); AMICE by Institute of Civil Engineers (India)) as equivalent to B.E./B.Tech. Those who have completed section A or equivalent of such professional courses are also eligible.
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