GATE Agricultural Engineering Syllabus 2027: Section-Wise Topics and Latest AG Syllabus

GATE AG Syllabus For General Aptitude

Topics

Sub-topics

Verbal Aptitude

• Basic English grammar

• Basic Vocabulary

• Reading and comprehension

• Narrative sequencing

Quantitative Aptitude

• Data interpretation

• 2 &  3-dimensional plots

• Maps & tables

• Numerical computation and estimation: ratios, percentages, powers, exponents and logarithms, permutations and combinations, and series 

• Mensuration & geometry

• Elementary statistics & probability

Analytical Aptitude

• Logic: Deduction & induction, Analogy

• Numerical relations & reasoning

Spatial Aptitude

• Transformation of shapes like translation, mirroring, rotation & scaling

• Assembling &  grouping

• Paper folding, cutting, and patterns (2 & 3 dimensions)

GATE AG Syllabus 2027 for Engineering Mathematics

Topics

Syllabus

Linear Algebra

Matrices and determinants, linear and orthogonal transformations, Cayley-Hamilton theorem, eigenvalues and eigenvectors, solutions of linear equations

Calculus

Limit, continuity and differentiability, partial derivatives, homogeneous functions and Euler's theorem on homogeneous functions, total differentiation, maxima and minima of functions with several independent variables, sequences and series (infinite series, tests for convergence), Fourier, Taylor and MacLaurin series

Vector Calculus

Vector differentiation, scalar and vector point functions, vector differential operators (del, gradient, divergence and curl), physical interpretations of line, surface and volume integrals, Stokes', Gauss' and Green's theorems

Differential Equations

Linear and non-linear first-order Ordinary Differential Equations (ODEs), homogeneous differential equations, higher-order linear ODEs with constant coefficients, Laplace transforms and their inverse, Partial Differential Equations (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

Solutions of linear and non-linear algebraic equations, numerical integration (trapezoidal and Simpson's rule), numerical solutions of ODEs

Subjects

Syllabus

Farm Machinery

Machine Design: Design and selection of machine elements – gears, pulleys, chains and sprockets and belts; overload safety devices used in farm machinery; measurement of force, stress, torque, speed, displacement and acceleration on machine elements – shafts, couplings, keys, bearings and knuckle joints.

Farm Machinery: Soil tillage; forces acting on a tillage tool; hitch systems and hitching of tillage implements; functional requirements, principles of working, construction and operation of manual, animal, tractor and renewable energy operated equipment for tillage, sowing, planting, fertilizer application, inter-cultivation, spraying, mowing, chaff cutting, harvesting and threshing; calculation of performance parameters – field capacity, efficiency, performance index, application rate and losses; cost analysis of implements and tractors; equipment for precision agriculture.

Farm Power

Sources of Power: Sources of power on the farm – human, animal, mechanical, electrical, wind, solar and biomass; bio-fuels 

Farm Power: Thermodynamic principles of I.C. engines; I.C. engine cycles; engine components; fuels and combustion; lubricants and their properties; I.C. engine systems – fuel, cooling, lubrication, ignition, electrical, intake and exhaust; selection, operation, maintenance and repair of I.C. engines; power efficiencies and measurement, engine performance curves; calculation of power, torque, fuel consumption, heat load and power losses.

Tractors and Power Tillers: Type, selection, maintenance and repair of tractors and power tillers; tractor clutches and brakes; power transmission systems – gear trains, differential, final drives and power take-off; mechanics of tractor chassis; traction theory; three-point hitches – free link and restrained link operations; steering and hydraulic control systems used in tractors; tractor tests and performance; human engineering and safety considerations in design of tractors and agricultural implements.

Soil and Water Conservation Engineering

Fluid Mechanics: Ideal and real fluids; properties of fluids; hydrostatic pressure and its measurement; continuity equation; kinematics and dynamics of flow; Bernoulli's theorem; laminar and turbulent flow in pipes; Darcy–Weisbach and Hazen–Williams equations; flow through orifices, weirs and notches; flow in open channels; dimensional analysis – concepts of geometric dimensionless numbers.

Soil Mechanics: Engineering properties of soils; fundamental definitions and relationships; index properties of soils; permeability and seepage analysis; shear strength; soil compaction and Proctor test; Mohr's circle of stress; active and passive earth pressures; stability of slopes; Terzaghi's one-dimensional soil consolidation theory.

Hydrology: Hydrological cycle and measurement of its components; meteorological parameters and their measurement; analysis of precipitation data; runoff estimation; hydrograph analysis; unit hydrograph theory and application; stream flow measurement; flood routing; hydrological reservoir and channel routing; infiltration – indices and equations; drought and its classification.

Surveying and Levelling: Measurement of distance and area; instruments for surveying and levelling; chain surveying; methods of traversing; measurement of angles and bearings; plane table surveying; types of levelling; theodolite traversing; contouring; total station, introduction to GPS survey; computation of areas and volume.

Soil and Water Erosion: Mechanics of soil erosion – wind and water erosion; soil erosion types; factors affecting erosion; soil loss estimation; biological and engineering measures to control erosion; terraces and bunds; vegetative waterways; gully control structures; drop, drop inlet and chute spillways; earthen dams.

Watershed Management: Watershed characterization and land use capability classification; water budgeting in watershed; rainwater harvesting; check dams and farm ponds.

Irrigation and Drainage Engineering

Soil–Water–Plant Relationship: Water requirement of crops; consumptive use and evapotranspiration; measurement of infiltration, soil moisture and irrigation water infiltration.

Irrigation Water Conveyance and Application Methods: Design of irrigation channels and underground pipelines; irrigation scheduling; surface, sprinkler and micro irrigation methods; design and evaluation of irrigation methods; irrigation efficiencies.

Agricultural Drainage: Drainage coefficient; planning, design and layout of surface and sub-surface drainage systems; leaching requirement and salinity control; irrigation and drainage water quality and reuse; non-conventional drainage system.

Groundwater Hydrology: Groundwater occurrence; groundwater movement; Darcy's Law; steady and unsteady flow in confined and unconfined aquifers; groundwater exploration techniques; overview of groundwater recharge estimation and artificial recharge techniques.

Wells and Pumps: Types of wells; steady flow through wells; design and construction of water wells; classification of pumps; pump characteristics; pump selection and installation.

Agricultural Process Engineering

Engineering Properties of Agricultural Produce: Physical, thermal, frictional, rheological and electrical properties.

Evaporation and Drying: Concentration and drying of liquid foods – evaporators, tray, drum and spray dryers; osmotic dehydration and freeze drying; hydrothermal treatments; drying and milling of cereals, pulses and oilseeds; drying kinetics; psychrometry – properties of air–water vapor mixture.

Size Reduction and Material Handling: Mechanics and energy requirement in size reduction of agricultural produce; particle size analysis for comminuted solids; size separation by screening; fluidization of granular solids; pneumatic, bucket, screw and belt conveying; cleaning and grading; effectiveness of separation; centrifugal separation of solids, liquids and gases; homogenization; filtration and membrane separation.

Processing of Agricultural Produce: Processing of seeds, spices, fruits and vegetables; value addition of agricultural produce.

Storage Systems: Controlled and modified atmosphere storage; perishable food storage; godowns, bins and grain silos; packaging material and machines.

Dairy and Food Engineering

Heat and Mass Transfer: Steady-state heat transfer in conduction, convection and radiation; transient heat transfer in simple geometry; working principles of heat exchangers; diffusive and convective mass transfer; simultaneous heat and mass transfer in agricultural processing operations; material and energy balances in food processing systems; water activity, sorption and desorption isotherms.

Unit Operations in Dairy and Food Engineering: Blanching, homogenization, pasteurisation and sterilisation.

Preservation of Food: Kinetics of microbial death – pasteurisation and sterilisation of milk and other liquid foods; preservation of food by cooling and freezing; refrigeration and cold storage basics and applications.

Expected GATE AG Subject-wise Weightage 2027

Topic

Expected Weightage in Marks

General Aptitude

15

Engineering Mathematics

13-15

Farm Machinery

10

Farm Power

7-8

Soil and Water Conservation Engineering

15

Irrigation and Drainage Engineering

3-4

Dairy and Food Engineering

5-8

GATE AG Exam Pattern 2027

Particulars

Details

Mode of Exam

Online

Number of Questions

65

Duration of Exam

3 hours

Pattern of Questions

• Multiple Choice Questions (MCQs)

• Multiple Select Questions (MSQs)

• Numerical Answer Type (NAT)

Marking Scheme

• For MCQ’s -Test Paper carry 1 mark and 2 marks for questions with 1 3 and 2 3 negative marking for incorrect answers respectively.

• For NAT - No negative marking.

Number of Sections

• Section 1- General Aptitude

• Section 2 – Engineering Mathematics and Core Discipline Questions.

Topic wise weightage

• General Aptitude – 15%

• Engineering Mathematics – 15%

• Core Discipline Questions – 70%