GATE 2021 Syllabus for Mechanical Engineering

S.no

Events

Dates

1

Availability of GATE 2021 registration

September 11, 2020

2

Examination date

February 5 to 7 and 12 to 14, 2021

Particulars

Details

Exam Duration

Three hours

Mode of examination

Computer-based test

Question type

Objective type and Numerical Answer Type (NAT)

Total no. of questions

65

Total marks

100

Sections

Aptitude Engineering, Mathematics, Subject-specific questions

Marking Scheme

One mark MCQs – 1/3 mark will be reduced for every incorrect response.

Two mark MCQs – 2/3 mark will be reduced for every incorrect answer.

No marks will be deducted for unattempted questions

No negative marking for Numerical Answer Type (NAT) questions

Particulars

Topics

Section-1: Engineering Mathematics

Linear Algebra -Linear equations, Matrix algebra, eigenvalues and eigenvectors.

Differential equations - Linear and nonlinear, Euler-Cauchy equation; higher-order linear differential equations with constant coefficients, initial and boundary value problems; solutions of heat, wave and Laplace's equations; Laplace transforms.

Calculus - Evaluation of definite and improper integrals; Functions of single variable, limit, continuity and differentiability, mean value theorem, indeterminate forms; double and triple integrals; total derivative, partial derivatives, maxima and minima, Taylor series (in one and two variables), Fourier series; divergence and curl, gradient, vector identities, line, directional derivatives, surface and volume integrals, and Green’s theorems and applications of Gauss, Stoke.

Probability and Statistics - Probability, conditional probability; sampling theorems; median, mean, mode and standard deviation; binomial, random variables, normal and Poisson distributions.

Numerical Methods - Integration by trapezoidal and Simpson’s rules; - Numerical solutions of linear and non-linear algebraic equations; single & multi-step for differential equations.

Complex variables - Cauchy-Riemann equations; Analytic functions, Taylor and Laurent series. Cauchy’s integral theorem & integral formula;

Section-2: Applied Mechanics and Design

Mechanics of Materials - Elastic constants, Stress and strain, Poisson's ratio, thin cylinders, Mohr’s circle for plane stress and plane strain, shear force and bending moment diagrams, deflection of beams, bending and shear stresses, torsion of circular shafts, energy methods, Euler’s theory of columns, thermal stresses, testing of materials with universal testing machine, strain gauges and rosettes, testing of hardness and impact strength.

Engineering Mechanics - Trusses and frames; Free body diagrams and equilibrium, virtual work; impulse and momentum (linear and angular), kinematics and dynamics of particles & of rigid bodies in plane motion and energy formulations, collisions.

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.

Machine Design - Design for static and dynamic loading, Failure theories, fatigue strength and the S-N diagram, gears, shafts, rolling and sliding contact bearings, springs, brakes and clutches, principles of the design of machine elements like riveted, bolted and welded joints

Vibrations - Effect of damping, Free and forced vibration of single degree of freedom systems, resonance, vibration isolation, critical speeds of shafts.

Section-3: Fluid Mechanics and Thermal Sciences

Heat-Transfer - One dimensional heat conduction, modes of heat transfer, heat transfer through fins, resistance concept & electrical analogy, lumped parameter system, unsteady heat conduction, Heisler's charts, dimensionless parameters in free and forced convective heat transfer, thermal boundary layer, heat transfer correlations for flow over flat plates and through pipes, heat exchanger performance, effect of turbulence, LMTD & NTU methods; Stefan-Boltzmann law, radiative heat transfer, Wien's displacement law, view factors, black and grey surfaces and radiation network analysis.

Fluid Mechanics - Fluid statics, properties, manometry, buoyancy, stability of floating bodies, forces on submerged bodies, control-volume analysis of mass, fluid acceleration, momentum and energy, differential equations of continuity and momentum, dimensional analysis, Bernoulli’s equation, viscous flow of incompressible fluids, elementary turbulent flow, boundary layer, flow through pipes, bends and fittings and head losses in pipes

Applications - Power Engineering, I.C. Engines, Refrigeration and air-conditioning and Turbomachinery

Thermodynamics - Properties of pure substances, thermodynamic systems and processes, the behaviour of ideal and real gases, calculation of work and heat in various processes, zeroth and first laws of thermodynamics, the second law of thermodynamics, thermodynamic relations and thermodynamic property charts and tables, availability and irreversibility.

Section-4: Materials, Manufacturing and Industrial Engineering

Casting, Forming and Joining Processes - Design of patterns, moulds and cores, Different types of castings, solidification and cooling, riser & gating design, fundamentals of hot and cold working processes, Plastic deformation and yield criteria load estimation for bulk (drawing, rolling, forging, extrusion) and sheet (deep drawing, shearing, bending), principles of powder metallurgy, metal forming processes, brazing, Principles of welding, soldering & adhesive bonding.

Engineering Materials - Phase diagrams, structure and properties of engineering materials, heat treatment, stress-strain diagrams for engineering materials.

Machining & Machine Tool Operations -Basic machine tools, Mechanics of machining, single and multi-point cutting tools, tool life and wear, tool geometry and materials, the economics of machining, principles of work holding, principles of non-traditional machining processes, design of jigs and fixtures.

Computer Integrated Manufacturing - Concepts of CAD/CAM and their integration tools.

Metrology and Inspection - Linear and angular measurements, Limits, fits and tolerances & comparators; gauge design, interferometry, alignment and testing methods, form and finish measurement, tolerance analysis in manufacturing and assembly.

Production Planning and Control - Aggregate production planning, forecasting models, materials requirement planning and scheduling.

Operations Research - Simplex method, linear programming, transportation, network flow models, assignment, simple queuing models and PERT & CPM.

Inventory Control - Safety stock inventory control systems, Deterministic models.

Year

General

OBC

SC/ST/PD

2019

34.1

30.7

22.7

2018

34.7

31.2

23.1

2017

32.87

29

21

2016

29.6

26.6

19.7

2015

32.73

29.46

21.82

2014

28.86

25.97

19.24

2013

25

22.25

16.67