OPSC AAE Syllabus 2026
Subject-wise and chapter-wise OPSC AAE syllabus: 21 subjects, 136 chapters across Paper-I and Paper-II, with the weightage each subject really got in 4 previous papers.
OPSC AAE Exam Pattern 2026
Written Examination — Paper-I
| Section | Questions | Marks |
|---|---|---|
| Section-A: General Engineering | — | — |
| Section-B: Farm Machinery and Power | — | — |
| Paper-I total | 100 | 100 |
Duration: 2 hours · Negative marking: 25% of the marks for each wrong answer; unattempted = zero
Written Examination — Paper-II
| Section | Questions | Marks |
|---|---|---|
| Section-A: Agricultural Processing and Food Engineering | — | — |
| Section-B: Soil and Water Conservation Engineering | — | — |
| Paper-II total | 100 | 100 |
Duration: 2 hours · Negative marking: 25% of the marks for each wrong answer; unattempted = zero
Personality Test (Interview)
| Section | Questions | Marks |
|---|---|---|
| Interview | — | 25 |
Duration: — · Negative marking: None
OPSC AAE Syllabus — Paper-I
Weightage = average number of questions per paper across the 4 real previous-year papers on this site.
Fundamentals of Computing
4.5 Q / paper5 chapter tests
- Programming Fundamentals (Flowcharts, Algorithms, C Basics)
- Computer Fundamentals & Organization
- Memory & Operating Systems
- Hardware, Software & I/O Devices
- DBMS, Cloud & AI Basics
Basic Mechanical Engineering
5.5 Q / paper4 chapter tests
- Manufacturing Processes (Welding, Casting, Forging, Machining)
- Engineering Materials & Mechanics Basics
- Power Transmission (Gears, Belts, Chains)
- Simple Machines & Thermodynamics Basics
Basic Electrical Engineering
4 Q / paper4 chapter tests
- Power Factor & Measuring Instruments
- DC & AC Fundamentals
- Electrical Wiring, Earthing & Safety
- Generation, Transmission & Distribution
Agricultural Statistics & Land Use
3 Q / paper5 chapter tests
- Agricultural Statistics of India & Odisha
- Land Distribution, Land Use & Holding Sizes
- Major Crops, Production & Productivity
- Farm Power Availability & Machinery Population
- Water Resource Availability & Irrigation Potential
Engineering Mathematics
3 chapter tests
- Probability & Statistics
- Linear Algebra
- Algebra, Matrices & Determinants
Surveying
4 Q / paper7 chapter tests
- Chain & Compass Surveying
- Levelling
- Contouring
- Areas & Volumes
- Theodolite and Traversing
- Tacheometry
- Plane Table Surveying
Building Materials
2 Q / paper8 chapter tests
- Cement
- Bricks and Tiles
- Building Stones
- Timber and Wood Products
- Aggregates, Mortars & Concrete
- Masonry and Plaster Work
- Roofs and Roof Covering
- Building Planning & Foundations
Estimating & Costing
0.5 Q / paper6 chapter tests
- Principles of Estimating
- Quantity Estimation
- Earthwork Calculation
- Rate Analysis & Specifications
- Detailed & Abstract Estimate
- Measurement of Works
Agricultural Structures & Greenhouse
1 Q / paper4 chapter tests
- Greenhouse Types & Components
- Greenhouse Site Selection & Design Criteria
- Greenhouse Construction, Repair & Maintenance
- Agricultural Structures & Farm Buildings
Farm Machinery
19 Q / paper10 chapter tests
- Farm Mechanization & Classification of Implements
- Tillage & Seed Bed Preparation Machinery
- Seeding & Planting Equipment
- Fertilizer Application & Plant Protection Equipment
- Harvesting Machinery
- Threshing & Post-Harvest Machines
- Testing of Farm Machines & Test Codes
- Farm Machinery Management & Cost Analysis
- Human Engineering, Ergonomics & Safety
- Precision Agriculture
Farm Power & Tractors
34 Q / paper7 chapter tests
- Sources of Farm Power
- IC Engines & Engine Components
- Engine Systems (Fuel, Cooling, Lubrication, Electrical)
- IC Engine Fuels & Lubricants
- Tractor Transmission Systems
- Tractor Mechanics, Stability & Weight Transfer
- Tractor Maintenance & Troubleshooting
Renewable Energy Engineering
7 Q / paper6 chapter tests
- Biomass Conversion & Biogas Plants
- Gasifier Technology
- Bio-diesel & Bio-ethanol Production
- Solar Energy Fundamentals & PV Systems
- Solar Thermal Systems
- Wind Energy Conversion Systems
Construction Management
7.5 Q / paper4 chapter tests
- PERT and CPM
- Project Management and Network Theory
- Crashing and Resource Allocation
- Engineering Economics
OPSC AAE Syllabus — Paper-II
Weightage = average number of questions per paper across the 4 real previous-year papers on this site.
Agricultural Processing & Food Engineering
25 Q / paper7 chapter tests
- Engineering Properties of Food Materials
- Cleaning, Grading & Separation of Grains
- Size Reduction Principles & Machinery
- Rice Milling & Parboiling
- Wheat, Corn & Pulse Milling
- Oilseed Milling & Oil Extraction
- Material Handling Equipment
Drying & Storage of Crops
3.5 Q / paper6 chapter tests
- Moisture Content, Water Activity & EMC
- Psychrometry & Drying Theory
- Drying Methods & Grain Dryers
- Storage of Food Grains & Causes of Spoilage
- Storage Structures, Bins & Silo Design
- Hermetic, CAP & Warehouse Storage
Horticultural Produce Processing
5 Q / paper7 chapter tests
- Fruits & Vegetables Processing
- Cold Storage & Refrigeration Load
- Controlled & Modified Atmosphere Storage
- Food Packaging Technologies
- Thermal Processing & Evaporation
- Freezing & Freezing Equipment
- Food Laws & Standards (FSSAI, BIS, Codex)
Hydrology & Irrigation
18 Q / paper12 chapter tests
- Hydrological Cycle & Precipitation
- Rainfall-Runoff Analysis
- Hydrographs
- Infiltration & Evaporation
- Floods & Flood Routing
- Irrigation Methods & Drainage
- Irrigation System Design
- Canals & Canal Design
- Cross Drainage Works
- Water Requirement of Crops
- Reservoirs & Dams
- Spillways & Energy Dissipators
Soil & Water Conservation Engineering
16 Q / paper9 chapter tests
- Soil Erosion, Gullies & Universal Soil Loss Equation
- Terraces, Bunds & Their Design
- Gully Control Structures (Drop, Chute, Pipe Inlet)
- Wind Erosion & Control Measures
- Sedimentation in Reservoirs & Streams
- Land Use Capability Classification
- Grassed Waterways & Water Harvesting
- Farm Ponds & Small Earth Embankments
- Watershed Characteristics & Management
Fluid Mechanics & Hydraulics
18 Q / paper10 chapter tests
- Fluid Properties
- Fluid Statics
- Buoyancy & Floatation
- Kinematics of Flow
- Bernoulli's Equation
- Flow Through Pipes
- Open Channel Flow
- Dimensional Analysis
- Hydraulic Machines
- Flow Measurement
Drainage Engineering
6.5 Q / paper6 chapter tests
- Objectives & Types of Surface Drainage
- Sub-surface Drainage Systems
- Drain Spacing Equations (Hooghoudt, Ernst)
- Design of Drains & Drainage Structures
- Drainage Materials & Envelopes
- Salt Balance & Reclamation of Saline-Alkaline Soils
Ground Water Engineering
6.5 Q / paper6 chapter tests
- Well Hydraulics
- Pump Tests
- Recharge Methods
- Aquifers & Wells
- Groundwater Flow
- Tube Wells
OPSC AAE Detailed Topics (Official Wording)
Source: opsc.gov.in
⚙️ Paper-I · Section-A — General Engineering
- Computer Programming and Data Structures: Data types, variables, operators, building and evaluating expressions, standard library functions · managing input and output, decision making · branching, looping, arrays, string functions · structures and union, queues, insertion and deletion operations
- Workshop Practice and Workshop Technology: Measuring tools · welding, lathe, shaper, drilling, milling machines — their types, components, specification, tools and functions
- Applied Electronics and Instrumentation: Diode, transistors, logic circuits · generalized instrumentation · measurement of displacement, temperature, velocity, pressure and force · transducer types and applications, strain gauge
- Common Statistical Data on Agriculture: Statistics on agriculture (Odisha & India) · land distribution pattern, land use, land holding sizes, major crops, their production and productivity · farm power availability, agriculture workers and draft animals, sale and population of tractors, power tillers, pump sets and implements · water resource availability, irrigation potential
- Units and Dimensions: Units and measurement, fundamental and derived units, relation between different units of measurement · dimensional analysis
- Surveying and Levelling: Linear measurements · types of survey and their applications, estimation of errors in measurements · levelling and contouring
- Building Construction and Cost Estimation: Building materials, building design and construction, agricultural structures, lead and material statement, building codes · estimates of buildings and agricultural structures
- Design and Maintenance of Greenhouse: Types of greenhouse, its components, site selection, design criteria and construction, applications, repair and maintenance
🚜 Paper-I · Section-B — Farm Machinery and Power
- Farm Machinery: Need of farm mechanization, classification of farm implements and their suitability · seed bed preparation machinery — MB plough, disc plough, sub-soilers, cultivators, rotavator, harrows, puddlers: their types, components, function & adjustments; forces acting on tillage tools, hitching systems and controls, draft measurement · seeding and planting equipment — types, parts, function and adjustment; metering mechanisms for small and bold seeds, calibration; rice transplanters · fertilizer application equipment, weeders, plant protection equipment — sprayers and dusters, their calibration, components and adjustments · principles & types of cutting mechanisms, crop harvesting machinery — reapers, reaper binders, combine harvesters, mowers and chaff cutters · threshers — types, components, functions and principles of threshing; cotton pickers, sugarcane harvester, potato digger, groundnut digger cum shaker, fruit harvesting tools and machines · testing of farm machines, test codes & procedure
- Farm Power: Sources of farm power; classification of tractors and IC engines; engine components and their construction, functions and adjustment · engine systems — valves, fuel & air supply, governing, ignition, cooling, lubrication and electrical systems · IC engine fuels and lubricants — their properties; detonation and knocking
- Tractor Systems and Controls: Transmission systems — clutch, gearbox, differential and final drive; brake, steering and hydraulic system, P.T.O. shaft, belt pulley and drawbar · mechanics of tractor chassis, determination of C.G. of tractor, overturning of tractor, weight transfer · tractor maintenance and trouble shooting
- Farm Power and Machinery Management: Role of farm mechanization in increasing production and productivity and reducing drudgery; index of farm mechanization · performance analysis — machine performance, capacity, field pattern, time efficiency, field efficiency, power analysis · cost analysis of farm machines; break-even analysis — method of finding break-even hour and area of machines; reliability analysis
- Human Engineering and Safety: Importance of human engineering in design of farm machinery and workspace · ergonomic parameters for evaluation of workers; anthropometry and its use in machine design; effect of noise, heat and vibration on operator's efficiency · safety aspects of tractors and farm machinery, safety measures and preventions of accidents
- Precision Agriculture: Concepts of precision agriculture — requirements and applications in agricultural production system; farm implements for precision agriculture
- Renewable Energy Engineering: Biomass conversion technology — types of biogas plants, design & construction and their defects, gasifier technology; technology and production process of bio-diesel and bio-ethanol · solar energy — fundamentals of solar energy, solar photovoltaic (PV) system, solar thermal system and their applications in agricultural system · wind energy conversion system, its applications and limitations
- Systems Engineering: System concepts; linear programming — formulation and applications, Simplex method, Big M method · transportation problems, assignment problems · project management by PERT/CPM · waiting line theory
🌾 Paper-II · Section-A — Agricultural Processing and Food Engineering
- Engineering Properties of Food Materials: Importance of engineering properties of biological materials · physical, thermal, frictional and aerodynamic characteristics of grains, fruits and vegetables
- Grain Processing: Cleaning and grading of food grains — aspiration, scalping, size separators, screens, sieve analysis, capacity and effectiveness of screens, various types of separators, shape graders · size reduction — principle, different laws governing size reduction, size reduction machinery · milling of rice — conditioning and parboiling, advantages and disadvantages, traditional methods, CFTRI and Jadavpur methods of parboiling, pressure parboiling method, types of rice milling, different unit operations and equipment · milling of wheat and corn — unit operations and equipment; dry and wet milling · milling of pulses — traditional, commercial, dry and wet milling methods, pulse milling machines · milling of oilseeds — preconditioning, mechanical expression, solvent extraction, refining of oil, stabilization of rice bran, by-products utilization · material handling equipment — conveyers (belt, roller, chain and screw), elevators, trucks, pneumatic conveying
- Drying and Storage of Crops: Drying — moisture content and water activity, isotherm, hysteresis effect, EMC determination, psychrometric chart and its use in drying, drying principles and theory, thin layer and deep bed drying analysis, falling rate and constant rate drying periods, drying equations and factors affecting drying, mass and energy balance, Shedd's equation, different methods of drying, tempering during drying, different types of grain dryers, dryer performance · storage of food grains — basics and functional requirement of storage, types and causes of spoilage, respiration of grains, moisture and temperature changes, control measures of storage environment, ventilation/aeration, control of rodents, birds, insects and microbes, bag and bulk storage, traditional storage structures, bag storage design, shallow and deep bin/silo, Rankine, Janssen and Airy's equation, storage of seeds, hermetically sealed and CAP storage, godown and warehouse design
- Horticultural Produce Processing: Fruits and vegetables processing — cleaning, sorting, grading; juice extractors; mechanical filtration — plate and frame filter press, shell and leaf filter, bag filter; different types of dryers for fruits and vegetables · storage of fruits and vegetables — evaporatively cooled storage structures, refrigerated storage, calculation of refrigeration load, sizing and economics of cold storage, modified and controlled atmospheric storage, CAS/MAP, active and passive MAP · packaging — shrink and cling packaging, vacuum and gas packaging, antimicrobial food packaging, smart packaging · thermal processing — thermal death time, D and Z value, process time, thermal processing equipment · evaporation — objectives, basic components, different types of evaporators, multiple effect evaporation, mass and energy balance · freezing — freezing time, freezing curve, different types of freezing equipment · food laws — FSSAI, food standards (BIS standards and specifications), Codex Alimentarius, ISO
💧 Paper-II · Section-B — Soil and Water Conservation Engineering
- Fluid Mechanics: Properties of fluids — ideal and real fluid · pressure and its measurement, Pascal's law, pressure forces on plane and curved surfaces, centre of pressure, buoyancy, metacentre and metacentric height · kinematics of fluid flow · dynamics of fluid flow, flow in pipes, power transmission through pipe · dimensional analysis, types of similarities, dimensionless numbers
- Irrigation Engineering: Major, medium and minor irrigation projects · sources of irrigation water, measurement of irrigation water, water conveyance, design of irrigation field channels, underground pipe conveyance system, irrigation structures, channel lining · land grading, different design methods and estimation of earth work and cost · soil-water-plant relationship, infiltration, evapotranspiration, soil moisture constants, depth of irrigation, frequency of irrigation, irrigation efficiencies · surface irrigation methods of water application · command area — definition, need, scope and development approaches, command area development authorities, planning and execution of on-farm development activities, design of field channels, cross drainage works, participatory irrigation management · micro-irrigation — types and components, sprinkler and drip irrigation: design, installation and maintenance
- Drainage Engineering: Drainage, objectives of drainage; surface drainage, drainage coefficient, types of surface drainage · sub-surface drainage — purpose and benefits, investigations of design parameters, hydraulic conductivity, drainable porosity, water table; types and use of subsurface drainage system · design of surface drains, interceptor and relief drains; derivation of ellipse (Hooghoudt's) and Ernst's drain spacing equations · design of surface drainage system, drainage materials, drainage pipes, drain envelope, layout, construction and installation of drains, drainage structures · salt balance, reclamation of saline and alkaline soils, leaching requirements
- Groundwater, Wells and Pumps: Occurrence and movement of ground water, aquifer and its types, classification of wells · well hydraulics, well interference, multiple well systems, design of open well · tube well design, design of gravel pack, well screen, sanitary protection, methods of drilling of wells and development of well · quality of ground water, conjunctive use, artificial groundwater recharge planning · pumping systems — water lifting devices, classification of pumps, components and parts of centrifugal pumps, pump selection, installation and troubleshooting, performance curves, hydraulic ram
- Hydrology: Introduction, hydrologic cycle; precipitation — forms, rainfall measurement, mean rainfall, depth and frequency analysis of point rainfall · geomorphology of watersheds · runoff — factors affecting, measurement, stage and velocity, rational method, curve number method, hydrograph · head water flood control — methods, retards and their location · flood routing — graphical methods of reservoir flood routing
- Soil & Water Conservation Engineering and Watershed Management: Soil erosion — causes, types and agents; gullies and their classification, stages of gully development, Universal Soil Loss Equation · erosion control measures — agronomical measures; engineering measures: terraces (types, their design, layout procedure and planning), bunds and their design, temporary gully control structures, permanent gully control structures (drop, chute and pipe inlet spillway) and their design · wind erosion — types and control measures · sedimentation in reservoirs and streams — estimation, measurement and control measures; introduction to stream water quality and pollution · land use capability classification · grassed waterways and their design · introduction to water harvesting techniques · small earth embankments — types and design principles, farm ponds and reservoirs, cost estimation of structures · watershed management — problems and prospects, watershed based land use planning, watershed characteristics (physical and geomorphologic parameters), factors affecting watershed management, planning and formulation of project proposal
See the syllabus in real OPSC AAE papers
4 previous-year papers, with the subject-wise question count of each.
OPSC AAE previous year papers →OPSC AAE Syllabus — FAQs
What is the syllabus of OPSC AAE 2026?
OPSC AAE covers 21 subjects in 2 parts — Paper-I, Paper-II. The subjects are Fundamentals of Computing, Basic Mechanical Engineering, Basic Electrical Engineering, Agricultural Statistics & Land Use, Engineering Mathematics, Surveying, Building Materials, Estimating & Costing, Agricultural Structures & Greenhouse, Farm Machinery, Farm Power & Tractors, Renewable Energy Engineering, Construction Management, Agricultural Processing & Food Engineering, Drying & Storage of Crops, Horticultural Produce Processing, Hydrology & Irrigation, Soil & Water Conservation Engineering, Fluid Mechanics & Hydraulics, Drainage Engineering, Ground Water Engineering.
Which subjects carry the most questions in OPSC AAE?
Across the 4 previous papers on CIVILGYAN, the most-asked subjects are Farm Power & Tractors (about 17 questions a paper), Agricultural Processing & Food Engineering (about 12 questions a paper), Farm Machinery (about 10 questions a paper), Fluid Mechanics & Hydraulics (about 9 questions a paper).
Is this the official OPSC AAE syllabus?
The subject list follows the official notification (opsc.gov.in); the chapter split and the weightage come from real previous papers and our test series. Always confirm against the latest notification.
How do I practise the OPSC AAE syllabus chapter by chapter?
The OPSC AAE test series has 136 chapter tests and 20 full mocks built on this syllabus, each with a detailed solution. 2 tests are free to attempt.