GATE 2021 Syllabus for Agricultural Engineering (AG) – Download PDF

GATE 2021 Syllabus for Agricultural Engineering – The syllabus for GATE Agricultural Engineering is available on this page. The syllabus for all the 27 subjects of GATE 2021 is published on its official website IIT Bombay, the exam conducting body. The syllabus varies from subject to subject. There will 55 questions asked from AE in the GATE 2021 exam and the remaining 10 questions will be asked under the General Aptitude section. The Agricultural Engineering syllabus includes 7 sections. These sections further include various topics. For the GATE Agricultural Engineering syllabus, candidates can further read this page.

GATE 2021 Agricultural Engineering Syllabus

The syllabus for Agricultural Engineering includes topics like Engineering Mathematics, Farm Machinery, Farm Power, Soil and Water Conservation Engineering, Irrigation and Drainage Engineering, Agricultural Processing Engineering, and Dairy and Food Engineering.The syllabus of all the 27 subjects in GATE 2021 is available on the official website of IIT Bombay. Check the detailed syllabus below –

Section 1: Engineering Mathematics

Linear Algebra: Matrices and determinants, linear and orthogonal transformations, Caley Hamilton theorem; Eigenvalues and Eigenvectors, solutions of linear equations.

Calculus: Limit, continuity and differentiability; partial derivatives; homogeneous function – Euler’s theorem on homogeneous functions, total differentiation; maxima and minima of function 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-line, surface and volume integrals; Stokes, Gauss and Green’s theorems.

Differential Equations: Linear and non-linear first order Ordinary Differential Equations (ODE); 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.

Section 2: 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 and power operated equipment for tillage, sowing, planting, fertilizer application, inter-cultivation, spraying, mowing, chaff cutting, harvesting and threshing calculation of performance parameters – field capacity, efficiency, application rate and losses; cost analysis of implements and tractors.

Section 3: 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; calculation of power, torque, fuel consumption, heat load, and power losses; performance index, cost analysis of implements and tractors

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 tractor and agricultural implements.

Section 4: 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, Moody’s diagram; 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, 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 Leveling: Measurement of distance and area; instruments for surveying and leveling; chain surveying, methods of traversing; measurement of angles and bearings, plane table surveying; types of leveling; 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 inletand chute spillways; earthen dams.

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

Section 5: 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 subsurface drainage systems; leaching requirement and salinity control; irrigation and drainage water quality and reuse; non-conventional drainage system.

Groundwater Hydrology: Groundwater occurrence; 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.

Section 6: Agricultural Process Engineering

Engineering properties of agriculture produce Physical, thermal, frictional, rheological and electrical properties. Evaporation and Drying: Concentration and drying of liquid foods – evaporators, tray, drum and spray dryers; 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 agriculture 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 Agriculture Produce: Processing of seeds, spices, fruits and vegetables; value addition of agriculture produce. Storage Systems: Controlled and modified atmosphere storage; perishable food storage, godowns, bins and grain silos, packaging material and machines.

Section 7: 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.

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

GATE 2021 General Aptitude Syllabus

The syllabus of General Aptitude is the very same for all the 25 subjects in GATE 2021. The pattern of this section is the same too. There are 10 questions under this section. Out of these 10 questions, 5 questions will carry 1 mark each and the remaining 5 questions will carry 2 marks each. General Aptitude constitutes two parts that are Verbal Ability & Numerical Ability. 

You can check the syllabus for this section below. 

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.

GATE Agricultural Engineering Mock Tests

Mock tests are an important step in preparation. Practicing from them will help you in finding your weak points that you can improve while there is still time in the exam.

GATE 2021 Agricultural Engineering Exam Pattern

Before starting your preparation, you must have a look at the exam pattern and the marking scheme of the GATE 2021. Doing so will give you a fair idea about what to expect in the exam. You must know what type of questions will be asked in the exam and the total marks of the exam. We have already covered the syllabus and preparation tips, let’s have a look at the exam pattern and the marking scheme too. 

Section Distribution of Marks  Total MarksTypes of questions
GA5 questions of 1 mark each
5 questions of 2 marks each

     15 marks 

AG- Subject-Based25 questions of 1 mark each
30 questions of 2 marks each 
    85 marks   MCQs and NATs
  • The exam will be conducted through online mode and is a Computer Based Test (CBT).
  • Duration will be 3 hours. 
  • The types of questions that will be coming in the exam are MCQs & NATs and the total number of questions is 65
  • There will be 3 sections namely General Aptitude, Mathematics and Subject-Based
  • The total marks in the exam will be 100. 
  • There will be negative marking for MCQs.
  • There will be no negative marking for NTAs.

GATE 2021 Marking scheme 

Type of questionNegative marking for wrong answerMarking for correct answer
MCQsfor 1 mark questions
⅔ for 2 marks questions
1 or 2 marks
NATsNo negative marking 1 or 2 marks

How To Prepare for Agricultural Engineering?

Most students are lost as to where to start their preparation. The syllabus is wide and there’s a lot to prepare for 3 sections. But let’s not get anxious already. You have about 4-5 months that you can use solely for preparation. Besides these 5 months, the last month will be only for revision. What you need is a good preparation strategy and honest efforts to follow that strategy. If you adhere to the following tips then cracking the GATE 2021 will not be difficult.


You don’t have to go crazy while preparing for sections that you are weak in. The most common and easiest approach is to learn the basics. Start from topics that are easy yet important. The basics are important as your foundation is in the development period. If your foundation remains weak then all your preparation will be a waste. To avoid this, understand the basic concepts and the root meaning behind the concept. Once you have gained the basic knowledge you will be able to solve any question from that topic. 

Section-wise strategy

We have already said that strategy is important. But the common question that students have is how to prepare this strategy. The easiest way to create a strategy is to make it section-wise. There are 3 sections in the exam – General Aptitude, Mathematics and Subject-based. First, prepare a strategy for the GA section. It is an easy section and is very scoring. Also, it doesn’t require too much preparation. Next, come to the mathematics section. This section is entirely dependant on your practice. The last section is the subject-based questions that is questions from Agricultural Engineering. Cover all the important and high weightage topics and then move on to the one that is difficult.

Focus on Numericals

Most of the GATE 2021 exam will be quantitative that is based on numerical. So your focus should be on solving as many numericals as you can. Practice questions of all difficulty levels from easy to hard. Make small targets and complete them in time. Try to increase your speed and accuracy. Enhance your mental calculation. You will hugely benefit from it in the exam.

Complete the syllabus

For some students completing the entire syllabus may seem impossible. The syllabus is huge no doubt. But what you need is a plan to tackle the syllabus without any extensive efforts. What you can do is break the syllabus in small chunks, set those as the target and then complete those topics. This way you can slowly and steadily complete the entire syllabus in 6 months without breaking any sweat. Set small targets and then achieve them. It will not only help you complete your syllabus but will also boost your confidence.

Do Revision

The importance of revision cannot be overstressed. You must do daily revision. Whatever you learn or practice in a day must be revised at the end of the day. Take your revision seriously. It will help you in memorizing better. It will also reduce your burden of revising the entire subject in one month. It will be a lot to take in and will overwhelm you. So it’s better to revise in small portions every day. 

GATE Agricultural Engineering Books for Preparation

Collecting the right study material can be stressful. There is a lot of material available and picking up a few amongst them will be very difficult. Even the material of the best quality might not suit you. So you have to be very careful when closing the books for preparing the GATE 2021. Your aim while hunting for study material should quality and not quantity. We have suggested a few books for your preparation below. 

Title of the bookName of the Author/ PublicationLink to buy
GATE Digest in Agricultural EngineeringSanjay KumarLINK
A Numerical Approach in Agricultural Engineering with ObjectiveSanjay KumarLINK
Agricultural Engineering- Practice Book (Series 1)Amandeep GodaraLINK

What is Agricultural Engineering?

Agricultural Engineering is one of the Engineering disciplines that studies agriculture production and processing. AG combines various disciplines like mechanical, civil, electrical and chemical engineering principles. The discipline aims at improving the efficacy and sustainability of agricultural processes. It also relates to the science and technology of producing food grains. 

GATE 2021 Agricultural Engineering FAQs 

Q1. How could I get the syllabus and required study material for agriculture engineering?
Ans. You can check the syllabus for agricultural engineering on the official website of GATE 2021 and also from this page. You will also find the study material for the subject on this page.  

Q2. Is there negative marking in the GATE 2021? 
Ans. yes, there is negative marking for the Multiple Choice Questions (MCQs) only in GATE 2021.

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