GATE 2021 Examination will be organised by IIT, Bombay and the exam will be conducted on February 5th, 6th, 7th, 12th, 13th and 14th February, 2021.There are two sessions (forenoon and afternoon) each day.
What’s New in GATE: 2021
- Eligibility criteria to appear for GATE-2021 exam is relaxed from the minimum 10+2+4 (ongoing) to minimum 10+2+3 (ongoing), enabling the third year students of their undergraduate studies to appear for gate 2021 examination.
- All Test Papers of GATE 2021 will be entirely objective type. Pattern of questions may include:
(i) Multiple Choice Questions (MCQ),
(ii) Multiple Select Questions (MSQ)and/or
(iii) Numerical Answer Type (NAT) questions.
- Two new subjects – Environmental Science and Engineering (ES) and Humanities and Social Science (XH) are added. The total number of subjects in GATE 2021 has increased to 27.
- Marks Distribution:
- General Aptitude: 15 Marks
- Engineering Mathematics: 13 Marks
- Subject Questions: 72 Marks
Detailed mark distribution for GATE 2021 examination
|General Aptitude Marks||Subject Marks
|Total Time (Minutes)|
|AE, AR, AG, BT, CE, CH, CS, CY, EC, EE, ES, EY, IN, MA, ME, MN, MT, PE, PH, PI, TF, ST and BM||15||85||100||180|
|GG [Part A + Part B (Section 1 Geology OR Section 2 Geophysics)]||15||25 + 60||100||180|
|XE (Section A + Any TWO Sections)||15||15 + (2 x 35)||100||180|
|XH (Section B1 + Any ONE Section)||15||25 + (1 x 60)||100||180|
- Two Paper combinations have to be chosen from the given list of combinations of papers. Final allotment of TWO papers will still be subject to availability of infrastructure and dates.
List of GATE 2021 Papers and Corresponding Codes:
|Code of The First (Primary) Paper||Codes of Papers Allowed as The Second Paper|
|BM||BT / XL|
|BT||BM / XL|
|CE||AR / ES|
|CH||CY / PE / XE|
|CY||CH / XL|
|EC||IN / PH|
|ES||AG / CE|
|GG||MN / PE / PH|
|IN||EC / EE/PH|
|MA||CS / PH / ST|
|MN||GG / XE|
|MT||PH / XE|
|PE||CH / GG / XE|
|PH||EC / GG / IN / MA / MT / ST|
|ST||MA / PH|
|XE||AE / CH / ME / MN / MT / PE / PI / TF|
|XL||BM / BT / CY|
Subjects name and their code:
|GATE Paper||Code||GATE Paper||Code|
|Aerospace Engineering||AE||Instrumentation Engineering||IN|
|Architecture and Planning||AR||Mechanical Engineering||ME|
|Bio-medical Engineering||BM||Mining Engineering||MN|
|Civil Engineering||CE||Petroleum Engineering||PE|
|Computer Science and Information
|CS||Production and Industrial
|Electronics and Communication
|EC||Textile Engineering and
|Electrical Engineering||EE||Engineering Sciences||XE*|
|Environmental Science &
|ES||Humanities & Social Sciences||XH**|
|Ecology and Evolution||EY||Life Sciences||XL***|
|Geology and Geophysics||GG|
Syllabus: GATE 2021 Examination
Section 2: 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, local maxima and minima; Taylor series; Evaluation of definite and indefinite integrals, application of definite integral to obtain area and volume; Partial derivatives; Total derivative; Gradient, Divergence and Curl, Vector identities; Directional derivatives; Line, Surface and Volume integrals.
Ordinary Differential Equation (ODE): First order (linear and non-linear) equations; higher order linear equations with constant coefficients; Euler-Cauchy equations; initial and boundary value problems.
Partial Differential Equation (PDE): Fourier series; separation of variables; solutions of one- dimensional diffusion equation; first and second order one-dimensional wave equation and two-dimensional Laplace equation.
Probability and Statistics: Sampling theorems; Conditional probability; Descriptive statistics – Mean, median, mode and standard deviation; Random Variables – Discrete and Continuous, Poisson and Normal Distribution; Linear regression.
Numerical Methods: Error analysis. Numerical solutions of linear and non-linear algebraic equations, Newton’s and Lagrange polynomials; numerical differentiation; Integration by trapezoidal and Simpson’s rule; Single and multi-step methods for first order differential equations.
Section 2: Structural Engineering
Engineering Mechanics: System of forces, free-body diagrams, equilibrium equations; Internal forces in structures; Frictions and its applications; Centre of mass; Free Vibrations of undamped SDOF system.
Solid Mechanics: Bending moment and shear force in statically determinate beams; Simple stress and strain relationships; Simple bending theory, flexural and shear stresses, shear centre; Uniform torsion, Transformation of stress; buckling of column, combined and direct bending stresses.
Structural Analysis: Statically determinate and indeterminate structures by force/ energy methods; Method of superposition; Analysis of trusses, arches, beams, cables and frames; Displacement methods: Slope deflection and moment distribution methods; Influence lines; Stiffness and flexibility methods of structural analysis.
Construction Materials and Management: Construction Materials: Structural Steel – Composition, material properties and behaviour; Concrete – Constituents, mix design, short-term and long-term properties. Construction Management: Types of construction projects; Project planning and network analysis – PERT and CPM; Cost estimation.
Concrete Structures: Working stress and Limit state design concepts; Design of beams, slabs,columns; Bond and development length; Prestressed concrete beams.
Steel Structures: Working stress and Limit state design concepts; Design of tension and compression members, beams and beam- columns, column bases; Connections – simple and eccentric, beam-column connections, plate girders and trusses; Concept of plastic analysis -beams and frames.
Section 3: Geotechnical Engineering
Soil Mechanics: Three-phase system and phase relationships, index properties; Unified and Indian standard soil classification system; Permeability – one dimensional flow, Seepage through soils – two – dimensional flow, flow nets, uplift pressure, piping, capillarity, seepage force; Principle of effective stress and quicksand condition; Compaction of soils; One- dimensional consolidation, time rate of consolidation; Shear Strength, Mohr’s circle, effective and total shear strength parameters, Stress-Strain characteristics of clays and sand; Stress paths.
Foundation Engineering: Sub-surface investigations – Drilling bore holes, sampling, plate load test, standard penetration and cone penetration tests; Earth pressure theories – Rankine and Coulomb; Stability of slopes – Finite and infinite slopes, Bishop’s method; Stress distribution in soils – Boussinesq’s theory; Pressure bulbs, Shallow foundations – Terzaghi’s and Meyerhoff’s bearing capacity theories, effect of water table; Combined footing and raft foundation; Contact pressure; Settlement analysis in sands and clays; Deep foundations – dynamic and static formulae, Axial load capacity of piles in sands and clays, pile load test, pile under lateral loading, pile group efficiency, negative skin friction.
Section 4: Water Resources Engineering
Fluid Mechanics: Properties of fluids, fluid statics; Continuity, momentum and energy equations and their applications; Potential flow, Laminar and turbulent flow; Flow in pipes, pipe networks; Concept of boundary layer and its growth; Concept of lift and drag.
Hydraulics: Forces on immersed bodies; Flow measurement in channels and pipes; Dimensional analysis and hydraulic similitude; Channel Hydraulics – Energy-depth relationships, specific energy, critical flow, hydraulic jump, uniform flow, gradually varied flow and water surface profiles.
Hydrology: Hydrologic cycle, precipitation, evaporation, evapo-transpiration, watershed, infiltration, unit hydrographs, hydrograph analysis, reservoir capacity, flood estimation and routing, surface run-off models, ground water hydrology – steady state well hydraulics and aquifers; Application of Darcy’s Law.
Irrigation: Types of irrigation systems and methods; Crop water requirements – Duty, delta, evapo-transpiration; Gravity Dams and Spillways; Lined and unlined canals, Design of weirs on permeable foundation; cross drainage structures.
Section 5: Environmental Engineering
Water and Waste Water Quality and Treatment: Basics of water quality standards- Physical, chemical and biological parameters; Water quality index; Unit processes and operations,water requirement; Water distribution system; Drinking water treatment, Sewerage system design, quantity of domestic wastewater, primary and secondary treatment. Effluent discharge standards; Sludge disposal; Reuse of treated sewage for different application
Air Pollution: : Types of pollutants, their sources and impacts, air pollution control, air quality standards, Air quality Index and limits.
Municipal Solid Wastes:Characteristics, generation, collection and transportation of solid wastes, engineered systems for solid waste management (reuse/ recycle, energy recovery, treatment and disposal).
Section 6: Transportation Engineering
Transportation Infrastructure: Geometric design of highways – cross-sectional elements, sight distances, horizontal and vertical alignments.Geometric design of railway Track – Speed and Cant. Concept of airport runway length, calculations and corrections; taxiway and exit taxiway design.
Highway Pavements: Highway materials – desirable properties and tests; Desirable properties of bituminous paving mixes; Design factors for flexible and rigid pavements; Design of flexible and rigid pavement using IRC codes
Traffic Engineering: Traffic studies on flow and speed, peak hour factor, accident study, statistical analysis of traffic data; Microscopic and macroscopic parameters of traffic flow, fundamental relationships; Traffic signs; Signal design by Webster’s method; Types of intersections; Highway capacity.
Section 7: Geomatics Engineering
Principles of surveying; Errors and their adjustment; Maps – scale, coordinate system; Distance and angle measurement – Levelling and trigonometric levelling; Traversing and triangulation survey; Total station; Horizontal and vertical curves. Photogrammetry and Remote Sensing – Scale, flying height; Basics of remote sensing and GIS.
Change in syllabus GATE 2021 for Civil Engineering
|Removed topic||Added topic|
|Linear Algebra: NA||Linear Algebra: NA|
|Calculus:Maclaurin series; Stokes, Gauss and Green’s theorems.||Calculus:NA|
|Ordinary Differential Equation (ODE): Laplace transform and its application in solving Partial Differential Equation (PDE):NA||Ordinary Differential Equation (ODE):NAPartial Differential Equation (PDE):NA|
|Probability and Statistics: Binomial distributions; exponential distributions;||Probability and Statistics: Discrete and Poisson and Normal Distribution; Linear regression.|
|Numerical Methods:NA||Numerical Methods: Error analysis. NA|
|Engineering Mechanics: Kinematics of point mass and rigid body; Euler’s equations of motion; Impulse-momentum; Energy methods; Principles of virtual work.||Engineering Mechanics:Free Vibrations of undamped SDOF system.
|Solid Mechanics: Theories of failures;||Solid Mechanics: NA|
|Structural Analysis: NA||Structural Analysis: NA|
|Construction Materials and Management: Bricks and mortar; Timber; Bitumen.
Tendering and construction contracts; Rate analysis and standard specifications;
|Construction Materials and Management: NA|
|Concrete Structures: Ultimate load design concepts; Analysis of beam sections at transfer and service loads.||Concrete Structures: NA|
|Steel Structures:NA||Steel Structures:NA|
|Soil Mechanics: Origin of soils, soil structure and fabric, Darcy’s law; Principle of capillarity, seepage force,||Soil Mechanics:NA|
|Foundation Engineering:method of slices, westergard’s theories
|Foundation Engineering:, pile under lateral loading, pile group efficiency,|
|Fluid Mechanics:NA||Fluid Mechanics: Concept of lift and drag.|
|Hydraulics: Kinematics of flow, velocity triangles; Basics of hydraulic machines, specific speed of pumps and turbines;||Hydraulics:NA|
|Irrigation: head works Water logging and drainage; Canal regulatory works, outlets and escapes.||Irrigation:NA|
Water and Waste Water: NA
Air Pollution:Air pollution mertrology
Municipal Solid Wastes:NA
Noise Pollution: Impacts of noise, permissible limits of noise pollution, measurement of noise and control of noise pollution.
Water and Waste Water Quality and Treatment: Reuse of treated sewage for different application
Air Pollution: Air quality Index and limits.
Municipal Solid Wastes:NA
Transportation Infrastructure: Highway alignment and engineering surveys;
Highway Pavements: Design of bituminous paving mixesDistresses in concrete pavements.
Traffic Engineering: travel time – delay and O-D study, PCU, parking study, Control devices, Types of channelization; level of service of rural highways and urban roads.
Highway Pavements: NA
|Section 7: Geomatics Engineering
Remote sensing – platform and sensors, visual image interpretation; Basic of Geographical Positioning system (GPS).
|Geomatics Engineering NA
Change in syllabus GATE 2021 for MECHANICAL ENGINEERING
Section 1: Engineering Mathematics
Linear Algebra: Matrix algebra, systems of linear equations, eigenvalues and eigenvectors.
Calculus: Functions of single variable, limit, continuity and differentiability, mean value theorems, indeterminate forms; evaluation of definite and improper integrals; double and triple integrals; partial derivatives, total derivative, Taylor series (in one and two variables), maxima and minima, Fourier series; gradient, divergence and curl, vector identities, directional derivatives, line, surface and volume integrals, applications of Gauss, Stokes and Green’s theorems.
Differential equations: First order equations (linear and nonlinear); higher order linear differential equations with constant coefficients; Euler-Cauchy equation; initial and boundary value problems; Laplace transforms; solutions of heat, wave and Laplace’s equations.
Complex variables: Analytic functions; Cauchy-Riemann equations; Cauchy’s integral theorem and integral formula; Taylor and Laurent series.
Probability and Statistics: Definitions of probability, sampling theorems, conditional probability; mean, median, mode and standard deviation; random variables, binomial, Poisson and normal distributions.
Numerical Methods: Numerical solutions of linear and non-linear algebraic equations; integration by trapezoidal and Simpson’s rules; single and multi-step methods for differential equations.
Section 2: Applied Mechanics and Design
Engineering Mechanics: Free-body diagrams and equilibrium; friction and its applications including rolling friction, belt-pulley, brakes, clutches, screw jack, wedge, vehicles, etc.; trusses and frames; virtual work; kinematics and dynamics of rigid bodies in plane motion; impulse and momentum (linear and angular) and energy formulations; Lagrange’s equation.
Mechanics of Materials: Stress and strain, elastic constants, Poisson’s ratio; Mohr’s circle for plane stress and plane strain; thin cylinders; shear force and bending moment diagrams; bending and shear stresses; concept of shear centre; deflection of beams; torsion of circular shafts; Euler’s theory of columns; energy methods; thermal stresses; strain gauges and rosettes; testing of materials with universal testing machine; testing of hardness and impact strength.
Theory of Machines: Displacement, velocity and acceleration analysis of plane mechanisms; dynamic analysis of linkages; cams; gears and gear trains; flywheels and governors; balancing of reciprocating and rotating masses; gyroscope.
Vibrations: Free and forced vibration of single degree of freedom systems, effect of damping; vibration isolation; resonance; critical speeds of shafts.
Machine 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, gears, rolling and sliding contact bearings, brakes and clutches, springs.
Section 3: Fluid Mechanics and Thermal Sciences
Fluid Mechanics: Fluid properties; fluid statics, forces on submerged bodies, stability of floating bodies; control-volume analysis of mass, momentum and energy; fluid acceleration; differential equations of continuity and momentum; Bernoulli’s equation; dimensional analysis; viscous flow of incompressible fluids, boundary layer, elementary turbulent flow, flow through pipes, head losses in pipes, bends and fittings; basics of compressible fluid flow.
Heat-Transfer: Modes of heat transfer; one dimensional heat conduction, resistance concept and electrical analogy, heat transfer through fins; unsteady heat conduction, lumped parameter system, Heisler’s charts; thermal boundary layer, dimensionless parameters in free and forced convective heat transfer, heat transfer correlations for flow over flat plates and through pipes, effect of turbulence; heat exchanger performance, LMTD and NTU methods; radiative heat transfer, Stefan- Boltzmann law, Wien’s displacement law, black and grey surfaces, view factors, radiation network analysis
Thermodynamics: Thermodynamic systems and processes; properties of pure substances, behaviour of ideal and real gases; zeroth and first laws of thermodynamics, calculation of work and heat in various processes; second law of thermodynamics; thermodynamic property charts and tables, availability and irreversibility; thermodynamic relations.
Applications:Power Engineering: Air and gas compressors; vapour and gas power cycles, concepts of regeneration and reheat. I.C. Engines: Air-standard Otto, Diesel and dual cycles.
Refrigeration and air-conditioning: Vapour and gas refrigeration and heat pump cycles; properties of moist air, psychrometric chart, basic psychrometric processes. Turbomachinery: Impulse and reaction principles, velocity diagrams, Pelton-wheel, Francis and Kaplan turbines; steam and gas turbines.
Section 4: Materials, Manufacturing and Industrial Engineering
Engineering Materials: Structure and properties of engineering materials, phase diagrams, heat treatment, stress-strain diagrams for engineering materials.
Casting, Forming and Joining Processes: Different types of castings, design of patterns, moulds and cores; solidification and cooling; riser and gating design. 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. Principles of welding, brazing, soldering and adhesive bonding.
Machining and Machine Tool Operations: Mechanics of machining; basic machine tools; 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, jigs and fixtures; abrasive machining processes; NC/CNC machines and CNC programming.
Metrology and Inspection: Limits, fits and tolerances; linear and angular measurements; comparators; interferometry; form and finish measurement; alignment and testing methods; tolerance analysis in manufacturing and assembly; concepts of coordinate-measuring machine (CMM).
Computer Integrated Manufacturing: Basic concepts of CAD/CAM and their integration tools; additive manufacturing.
Production Planning and Control: Forecasting models, aggregate production planning, scheduling, materials requirement planning; lean manufacturing.
Inventory Control: Deterministic models; safety stock inventory control systems.
Operations Research: Linear programming, simplex method, transportation, assignment, network flow models, simple queuing models, PERT and CPM.
Change in syllabus 2021
|Removed topic||Added topic|
|Linear Algebra: NA||Linear Algebra:NA|
|Differential equations: NA||Differential equations:NA|
|Complex variables: NA||Complex variables:NA|
|Probability and Statistics: NA||Probability and Statistics:NA|
|Numerical Methods: NA||Numerical Methods:NA|
|Engineering Mechanics: Collision||Engineering Mechanics: friction and its applications including rolling friction, belt-pulley, brakes, clutches, screw jack, wedge, vehicles, etc.Lagrange’s equation.|
|Mechanics of Materials: NA||Mechanics of Materials: concept of shear centre|
|Theory of Machines & VIBRATION: NA
|Theory of Machines& Vibrations:NA|
|Machine Design: NA||Machine Design:NA|
|Fluid Mechanics: Manometry, buoyancy,||Fluid Mechanics: basics of compressible fluid flow.|
|Thermodynamics: steam and gas turbines.|
|Engineering Materials: NA||Engineering Materials:NA|
|Casting, Forming and Joining Processes:NA||Casting, Forming and Joining Processes:
|Machining and Machine Tool Operations: NA||Machining and Machine Tool Operations: abrasive machining processes; NC/CNC machines and CNC programming.
|Metrology and Inspection: gauge design
|Metrology and Inspection: concepts of coordinate-measuring machine (CMM).|
|Computer Integrated Manufacturing: NA
|Computer Integrated Manufacturing: additive manufacturing.|
|Production Planning and Control: NA
Inventory Control: NA
Operations Research: NA
|Production Planning and Control: lean manufacturing.