OPSC AEE Exam Pattern and Syllabus 2026: GATE Guide

OPSC AEE Exam Pattern and Syllabus 2026: Complete GATE Guide

Candidates preparing for the OPSC Assistant Executive Engineer (AEE) Recruitment 2026 should understand the examination pattern, engineering syllabus and selection procedure before planning their preparation. Unlike many state engineering recruitments, the Odisha Public Service Commission (OPSC) is using a GATE-based selection process for the Assistant Executive Engineer vacancies covered by Advertisement No. 13 of 2026-27.

The recruitment covers 758 Group A vacancies, including 750 Assistant Executive Engineer (Civil) posts and 8 Assistant Executive Engineer (Mechanical) posts. Candidates must possess the prescribed engineering qualification and a valid GATE score in the relevant discipline from GATE 2024, GATE 2025 or GATE 2026.

OPSC AEE Recruitment 2026: 758 Posts, Apply Online

The most important point is that OPSC does not conduct a separate written examination for this recruitment. Candidates are shortlisted using their relevant GATE scores and must attend the prescribed interview. The selection weightage is 90% for the GATE score and 10% for the interview, subject to the official notification.

This guide explains the OPSC AEE selection pattern, GATE examination structure, complete subject-wise syllabus outline for Civil and Mechanical Engineering, marking scheme and preparation strategy.

OPSC AEE Exam Pattern and Syllabus 2026: Overview

Particular	Details
Recruiting Authority	Odisha Public Service Commission
Post Name	Assistant Executive Engineer
Recruitment Year	2026
Advertisement Number	13 of 2026-27
Total Vacancies	758
Engineering Disciplines	Civil and Mechanical
Separate OPSC Written Examination	No
Accepted GATE Scores	GATE 2024, 2025 and 2026
GATE Paper for Civil Posts	Civil Engineering (CE)
GATE Paper for Mechanical Posts	Mechanical Engineering (ME)
GATE Score Weightage	90%
Interview Weightage	10%
Document Verification	Required
Official Recruitment Website	https://opsc.gov.in/
Official GATE Syllabus	https://gate2026.iitg.ac.in/exam-papers-and-syllabus.html

OPSC AEE Selection Process 2026

Candidates should first understand the difference between the GATE examination pattern and the OPSC recruitment selection process. GATE is the engineering aptitude examination whose score is used by OPSC, while OPSC carries out the recruitment-related shortlisting, verification and interview.

The selection process consists of the following stages.

Stage 1: Valid GATE Score

Candidates must have an eligible GATE score in Civil Engineering or Mechanical Engineering, depending on the post for which they apply.

OPSC accepts eligible scores from GATE 2024, GATE 2025 and GATE 2026 under the prescribed conditions. The engineering discipline shown on the scorecard must correspond to the relevant AEE post.

A GATE score from an unrelated engineering paper should not be assumed eligible.

Stage 2: Document Verification

Candidates must produce the documents required to establish their eligibility. These include engineering qualifications, GATE scorecards, age proof, category certificates where applicable and documents establishing the prescribed Odia language qualification.

The commission will check the documents according to the recruitment advertisement. Candidates should ensure that the details in their application agree with their original certificates.

Stage 3: Shortlisting for Interview

Eligible candidates are shortlisted for interview according to the prescribed GATE-score criteria and category-wise requirements. The recruitment notice provides for shortlisting approximately twice the advertised vacancies in each category, subject to its detailed conditions.

Meeting the minimum eligibility requirements does not guarantee an interview call or final appointment.

Stage 4: Interview

Shortlisted candidates must attend the interview conducted by OPSC. The interview contributes 10% to the final selection weightage.

Candidates should be prepared to discuss their engineering fundamentals, academic projects, practical applications, relevant technical concepts and professional understanding.

Stage 5: Final Merit List

The final selection is based on the prescribed combination of GATE score and interview performance, together with eligibility, merit, category-wise vacancies and applicable reservation rules.

Component	Weightage
Relevant GATE Score	90%
Interview	10%
Total	100%

Candidates should consult Advertisement No. 13 of 2026-27 for the exact calculation method and all conditions governing shortlisting and final merit.

GATE Exam Pattern 2026 for OPSC AEE Candidates

Civil and Mechanical Engineering applicants must understand the structure of the corresponding GATE paper. The following pattern is based on the official GATE 2026 examination information.

Particular	Details
Examination Mode	Computer-Based Test (CBT)
Examination Duration	3 hours
Maximum Marks	100
Question Types	MCQ, MSQ and NAT
Examination Language	English
General Aptitude	15 marks
Engineering Mathematics	13 marks
Engineering Subject Questions	72 marks
Total Questions	As specified in the official paper; varies by paper structure
Negative Marking	Applicable to incorrect MCQ responses
MSQ Negative Marking	No
NAT Negative Marking	No

The Civil Engineering (CE) and Mechanical Engineering (ME) papers follow the standard engineering-paper structure, with General Aptitude, Engineering Mathematics and discipline-specific questions.

GATE Marks Distribution

Section	Marks
General Aptitude	15
Engineering Mathematics	13
Core Engineering Subject	72
Total	100

The distribution above is the standard structure for the GATE CE and ME papers. Candidates should check the official examination information for any year-specific changes.

Types of Questions in GATE

GATE uses three principal question formats.

Multiple Choice Questions (MCQs): Candidates select one correct answer from the given options. Negative marking applies to incorrect answers.

Multiple Select Questions (MSQs): Candidates select one or more correct options. There is no negative marking for incorrect responses, and partial marking is not provided.

Numerical Answer Type (NAT): Candidates enter a numerical answer using the computer interface. There is no negative marking for an incorrect NAT response.

GATE Negative Marking Scheme

MCQ Type	Penalty for an Incorrect Answer
1-mark MCQ	1/3 mark
2-mark MCQ	2/3 mark
MSQ	No negative marking
NAT	No negative marking

Candidates should avoid random guessing in MCQs because incorrect responses reduce the score. For MSQ and NAT questions, the absence of negative marking does not mean that partial marks are automatically awarded.

General Aptitude Syllabus

General Aptitude is common to the GATE CE and ME examinations and carries 15 marks.

The main areas include:

• Verbal aptitude
• English grammar and usage
• Reading comprehension
• Vocabulary and sentence completion
• Numerical computation
• Quantitative aptitude
• Data interpretation
• Logical reasoning
• Analytical reasoning
• Spatial aptitude

Candidates should practise numerical problems, reading comprehension and reasoning questions regularly. Since General Aptitude carries a fixed share of the examination marks, neglecting it can unnecessarily limit the overall score.

OPSC AEE Civil Engineering Syllabus 2026

Candidates applying for Assistant Executive Engineer (Civil) posts should prepare according to the official GATE Civil Engineering syllabus. The syllabus includes Engineering Mathematics, Structural Engineering, Geotechnical Engineering, Water Resources Engineering, Environmental Engineering, Transportation Engineering and Geomatics Engineering, among other areas.

The following section provides a structured topic-wise outline to help candidates organise their preparation.

1. Engineering Mathematics

Engineering Mathematics is an important part of the Civil Engineering GATE paper.

Linear Algebra

• Matrix algebra
• Systems of linear equations
• Eigenvalues and eigenvectors

Calculus

• Functions of one variable
• Limits, continuity and differentiability
• Mean value theorems
• Maxima and minima
• Taylor series
• Definite and indefinite integrals
• Partial derivatives
• Gradient, divergence and curl
• Line, surface and volume integrals

Differential Equations

• First-order differential equations
• Higher-order linear differential equations
• Euler-Cauchy equations
• Initial and boundary value problems
• Partial differential equations
• Fourier series
• Diffusion and wave equations
• Laplace equation

Probability and Statistics

• Conditional probability
• Sampling
• Mean, median and mode
• Standard deviation
• Discrete and continuous random variables
• Poisson and normal distributions
• Linear regression

Numerical Methods

• Error analysis
• Numerical solutions of algebraic equations
• Newton’s and Lagrange polynomials
• Numerical differentiation
• Trapezoidal and Simpson’s rules
• Numerical solutions of differential equations

2. Structural Engineering

Structural Engineering covers the behaviour, analysis and design of structures under different loads.

Engineering Mechanics

• Force systems and equilibrium
• Free-body diagrams
• Internal forces in structures
• Friction and its applications
• Centre of mass
• Free vibration of undamped single-degree-of-freedom systems

Solid Mechanics

• Stress and strain
• Bending moment and shear force
• Flexural and shear stresses
• Torsion
• Transformation of stress
• Buckling of columns
• Combined stresses
• Deflection of beams

Structural Analysis

• Statically determinate and indeterminate structures
• Trusses, arches, beams, cables and frames
• Force and energy methods
• Slope-deflection method
• Moment-distribution method
• Influence lines
• Stiffness and flexibility methods
• Displacement methods

Construction Materials and Management

• Properties of structural steel
• Concrete constituents and properties
• Concrete mix design
• Construction project planning
• Project scheduling
• PERT and CPM
• Cost estimation

Concrete Structures

• Working stress and limit-state design
• Design of beams and slabs
• Design of columns
• Bond and development length
• Prestressed concrete beams

Steel Structures

• Working stress and limit-state design
• Tension and compression members
• Beams and beam-columns
• Column bases
• Steel connections
• Design principles for structural steel members

Candidates should consult the official syllabus for the exact scope of each design topic.

3. Geotechnical Engineering

Geotechnical Engineering focuses on soil mechanics, foundations and the engineering properties of soil.

Important topics include:

• Soil classification and index properties
• Three-phase soil systems
• Permeability of soils
• Seepage and effective stress
• Stress distribution in soils
• Consolidation and settlement
• Shear strength of soils
• Compaction
• Earth pressure
• Stability of slopes
• Shallow foundations
• Deep foundations
• Bearing capacity
• Foundation settlement
• Soil exploration and site investigation

Candidates should practise numerical problems involving effective stress, consolidation, bearing capacity and foundation design.

4. Water Resources Engineering

Water Resources Engineering covers fluid behaviour, hydrology, irrigation and hydraulic systems.

Fluid Mechanics and Hydraulics

• Fluid properties
• Fluid statics
• Fluid kinematics and dynamics
• Continuity equation
• Momentum and energy equations
• Flow through pipes
• Open-channel flow
• Hydraulic jumps
• Dimensional analysis
• Boundary layers
• Hydraulic structures

Hydrology

• Hydrological cycle
• Precipitation
• Infiltration
• Evaporation and evapotranspiration
• Runoff
• Hydrographs
• Flood estimation
• Groundwater hydrology
• Reservoir planning

Irrigation Engineering

• Irrigation methods
• Water requirements of crops
• Canal irrigation
• Canal design
• Irrigation efficiencies
• Dams and reservoirs
• Water distribution systems
• Drainage and waterlogging

5. Environmental Engineering

Environmental Engineering deals with water quality, wastewater management and environmental protection.

Important areas include:

• Water quality parameters
• Water demand estimation
• Water treatment processes
• Sedimentation and filtration
• Disinfection
• Wastewater characteristics
• Sewage collection and treatment
• Biological wastewater treatment
• Sludge treatment and disposal
• Air pollution
• Solid waste management
• Environmental standards
• Environmental impact and pollution control

Candidates should understand the underlying processes as well as the numerical relationships used in water and wastewater treatment.

6. Transportation Engineering

Transportation Engineering covers the planning, design and operation of transportation infrastructure.

Important topics include:

• Highway planning
• Geometric design of roads
• Highway materials
• Pavement design
• Traffic engineering
• Traffic flow characteristics
• Traffic signs and road markings
• Road intersections
• Transportation planning
• Railway engineering fundamentals
• Airport engineering fundamentals
• Traffic safety and capacity

7. Geomatics Engineering

Geomatics Engineering includes surveying, mapping and spatial measurement techniques.

Key topics include:

• Surveying principles
• Levelling
• Traversing
• Triangulation
• Errors and adjustments
• Theodolites and total stations
• Photogrammetry
• Remote sensing
• Geographic Information Systems (GIS)
• Satellite positioning
• Mapping and coordinate systems

Candidates should use the official GATE Civil Engineering syllabus PDF to confirm the complete topic list and detailed subtopics.

OPSC AEE Mechanical Engineering Syllabus 2026

Candidates applying for Assistant Executive Engineer (Mechanical) posts should follow the official GATE Mechanical Engineering syllabus. The main subject groups include Engineering Mathematics, Applied Mechanics and Design, Fluid Mechanics and Thermal Sciences, Materials, Manufacturing and Industrial Engineering.

1. Engineering Mathematics

Linear Algebra

• Matrix algebra
• Systems of linear equations
• Eigenvalues and eigenvectors

Calculus

• Limits and continuity
• Differentiation
• Integration
• Definite and improper integrals
• Partial derivatives
• Maxima and minima
• Fourier series
• Vector calculus
• Gradient, divergence and curl
• Green’s, Gauss’s and Stokes’ theorems

Differential Equations

• First-order differential equations
• Higher-order linear differential equations
• Euler-Cauchy equations
• Initial and boundary value problems
• Laplace transforms
• Heat, wave and Laplace equations

Complex Variables

• Analytic functions
• Cauchy-Riemann equations
• Cauchy’s integral theorem
• Cauchy’s integral formula
• Taylor and Laurent series

Probability, Statistics and Numerical Methods

• Probability distributions
• Conditional probability
• Mean, median, mode and standard deviation
• Numerical solutions of algebraic equations
• Numerical integration
• Numerical solutions of differential equations

2. Applied Mechanics and Design

This section tests knowledge of mechanical systems, material behaviour and machine design.

Engineering Mechanics

• Free-body diagrams
• Equilibrium of forces
• Friction
• Trusses and frames
• Virtual work
• Kinematics and dynamics of rigid bodies
• Impulse and momentum
• Energy methods
• Lagrange’s equation

Mechanics of Materials

• Stress and strain
• Elastic constants
• Poisson’s ratio
• Mohr’s circle
• Thin cylinders
• Shear-force and bending-moment diagrams
• Bending and shear stresses
• Beam deflection
• Torsion of shafts
• Euler’s theory of columns
• Energy methods
• Thermal stresses
• Mechanical testing of materials

Theory of Machines

• Kinematic analysis of mechanisms
• Velocity and acceleration analysis
• Cams
• Gears and gear trains
• Flywheels and governors
• Balancing of rotating and reciprocating masses
• Gyroscopes

Vibrations

• Free and forced vibrations
• Single-degree-of-freedom systems
• Damping
• Resonance
• Vibration isolation
• Critical speeds of shafts

Machine Design

• Design under static and dynamic loads
• Failure theories
• Fatigue strength
• S-N diagrams
• Bolted, riveted and welded joints
• Shaft design
• Gears
• Bearings
• Brakes and clutches
• Springs

3. Fluid Mechanics and Thermal Sciences

This section covers fluid behaviour, thermodynamic processes and heat transfer.

Fluid Mechanics

• Fluid properties
• Fluid statics
• Pressure forces on submerged bodies
• Stability of floating bodies
• Control-volume analysis
• Conservation of mass, momentum and energy
• Fluid acceleration
• Fluid flow equations
• Pipe flow and associated losses

Thermodynamics

• Thermodynamic systems and properties
• First and second laws of thermodynamics
• Work and heat transfer
• Entropy
• Pure substances
• Thermodynamic cycles
• Ideal and real gases
• Gas mixtures

Heat Transfer

• Conduction
• Convection
• Thermal radiation
• Heat exchangers
• Steady and unsteady heat transfer
• Heat-transfer coefficients
• Thermal resistance networks

Applications

• Power-generation cycles
• Refrigeration
• Air conditioning
• Compressors
• Turbomachinery fundamentals

Candidates should follow the precise subtopics in the official Mechanical Engineering syllabus rather than treating this outline as a substitute for the official document.

4. Materials, Manufacturing and Industrial Engineering

Engineering Materials

• Material properties
• Mechanical behaviour of materials
• Heat treatment
• Material testing
• Phase diagrams
• Material selection

Manufacturing Engineering

• Casting
• Forming and metalworking
• Welding
• Machining
• Machine tools
• Metal-cutting principles
• Production processes
• Manufacturing measurements
• Computer-integrated manufacturing concepts

Industrial Engineering

• Work study
• Production planning and control
• Inventory management
• Operations research
• Linear programming
• Scheduling
• Quality control
• Reliability
• Engineering economics

The official GATE Mechanical Engineering syllabus should be used to verify the precise topic boundaries and any additional areas applicable to the examination year.

Official GATE Syllabus PDFs for OPSC AEE 2026

Candidates can access the official syllabus documents using the following links.

Engineering Discipline	Official Syllabus
Civil Engineering (CE)	Download GATE Civil Engineering Syllabus 2026 (PDF)
Mechanical Engineering (ME)	Download GATE Mechanical Engineering Syllabus 2026 (PDF)
GATE Examination Pattern	View Official GATE 2026 Exam Pattern
All GATE Papers and Syllabi	Visit Official GATE 2026 Syllabus Page

Candidates should download the PDF corresponding to their engineering discipline and use it as the definitive preparation checklist.

How to Prepare for OPSC AEE Recruitment 2026

Because OPSC uses GATE scores for this recruitment, candidates should focus on the relevant GATE syllabus, their scorecard and interview readiness rather than preparing for an assumed separate OPSC written test.

1. Confirm the Accepted GATE Score

Check whether your GATE score is from an accepted year and whether the paper code matches your engineering discipline. Read the OPSC notification carefully to confirm the scorecard and eligibility requirements.

2. Divide the Syllabus into Subject Groups

Break the official syllabus into manageable sections. Civil Engineering candidates can organise their studies around Structural Engineering, Geotechnical Engineering, Water Resources, Environmental Engineering and Transportation Engineering. Mechanical Engineering candidates can organise theirs around Applied Mechanics, Design, Fluid Mechanics, Thermal Sciences, Manufacturing and Industrial Engineering.

3. Practise Engineering Mathematics

Engineering Mathematics contributes a defined share of marks to the standard CE and ME papers. Revise formulas, practise numerical questions and identify the topics in which you make frequent calculation errors.

4. Prepare General Aptitude Regularly

General Aptitude accounts for 15 marks. Regular practice of quantitative aptitude, verbal ability, comprehension and reasoning can help improve accuracy.

5. Solve Previous GATE Papers

Practise previous GATE papers and official sample or mock questions to understand the question formats, difficulty and time requirements. Use them to diagnose weak areas rather than memorising answers.

6. Analyse Your Performance

Maintain a record of accuracy, time spent, questions left unanswered and topics that require revision. Revisit the concepts behind mistakes instead of simply repeating the same questions.

7. Prepare for the OPSC Interview

Shortlisted candidates should revise engineering fundamentals, academic projects and practical applications of their discipline. They should also review the job responsibilities of an Assistant Executive Engineer and prepare to explain their technical reasoning clearly.

8. Keep Documents Ready

Prepare the required engineering certificates, GATE scorecard, identity and age proof, category documents where applicable, and prescribed Odia language proof. Follow the commission’s instructions for document verification.

Important Instructions for Candidates

• A valid GATE score is a central requirement for this recruitment.
• The accepted GATE year and engineering discipline must satisfy the official notification.
• OPSC does not specify a separate written examination for this recruitment.
• The GATE examination pattern described above refers to the official GATE 2026 structure.
• The OPSC interview and document-verification schedule must be checked on the commission’s website.
• Do not confuse the GATE qualifying cutoff with the score needed to secure an OPSC interview call or final appointment.
• Reservation, age relaxation and other eligibility provisions must be checked against the official advertisement.

Frequently Asked Questions (FAQs)

The OPSC AEE Exam Pattern and Syllabus 2026 is closely linked to the GATE examination because OPSC uses the relevant GATE score for shortlisting and selection. Candidates applying for Civil Engineering posts should focus on GATE CE, while applicants for Mechanical Engineering posts should prepare according to GATE ME.

Understanding the examination structure, completing the official syllabus and practicing previous GATE questions can help candidates prepare systematically. Applicants should also keep their eligibility documents ready and prepare for the OPSC interview.

Before making any application or preparation decision, consult Advertisement No. 13 of 2026-27 and the official GATE syllabus for the relevant engineering discipline.