UPSC ESE Syllabus 2027: Ultimate Subject-Wise Syllabus, Exam Pattern & Crucial PDF Download Guide

ESE Exam Details & Important Clarifications

1. IES (Engineering) vs. Indian Economic Service (IES) & ISS

• UPSC ESE / IES (Engineering Services): Recruits engineers for technical administrative posts through the upsc engineering services examination syllabus.
• UPSC IES (Indian Economic Service) & ISS (Indian Statistical Service): A completely separate civil examination governed by the upsc indian economic service syllabus, ies iss exam syllabus, and upsc iss exam pattern. Candidates for the Economic Service must hold post-graduate degrees in Economics, while ISS candidates require qualifications in Statistics.

2. Can Computer Science (CSE) Students Apply for ESE?

• Official Rule: UPSC conducts ESE for only four branches: Civil, Mechanical, Electrical, and Electronics & Telecommunication. There is no dedicated Computer Science branch in ESE.
• Options for CSE Graduates: Computer Science engineering graduates holding an equivalent degree are permitted to appear under the Electronics and Telecommunication Engineering (E&T) stream, as long as they master the ese ece syllabus, which covers overlapping subjects like Computer Organization and Architecture, Advanced Communication, and Microprocessors.

UPSC ESE Exam Pattern & Marking Scheme

Stage I: Prelims (Objective) [500 Marks]
         ├── Paper I: General Studies & Engineering Aptitude [200 Marks]
         └── Paper II: Engineering Discipline [300 Marks]
                         │
                         ▼ (Qualified Candidates)
Stage II: Mains (Conventional / Descriptive) [600 Marks]
         ├── Paper I: Engineering Discipline [300 Marks]
         └── Paper II: Engineering Discipline [300 Marks]
                         │
                         ▼ (Qualified Candidates)
Stage III: Personality Test / Interview [200 Marks]
                         │
                         ▼
           Final Merit List [Out of 1300 Marks]

Comprehensive ESE Paper Pattern Breakdown

ESE Paper 1 Syllabus: General Studies & Engineering Aptitude

1. Current Issues of National & International Importance: Social, economic, and industrial developments, recent infrastructure initiatives, and technological policies.
2. Engineering Aptitude & Reasoning: Logical reasoning, analytical ability, quantitative aptitude, and spatial orientation.
3. Engineering Mathematics and Numerical Analysis: Linear algebra, calculus, differential equations, complex variables, probability, and numerical methods (engineering mathematics syllabus for ese).
4. General Principles of Design, Drawing, and Importance of Safety: Engineering drawing conventions, projection types, CAD basics, safety regulations, and risk assessment principles.
5. Standards and Quality Practices: Production, construction, and maintenance practices, Total Quality Management (TQM), ISO certifications, and Six Sigma concepts.
6. Basics of Energy and Environment: Ecology, ecosystem stability, environmental pollution, greenhouse gas emissions, climate change, and renewable energy systems.
7. Basics of Project Management: Project lifecycle, planning, scheduling techniques (CPM and PERT), cost estimating, and project financing.
8. Basics of Information and Communication Technologies (ICT): Networking fundamentals, e-governance applications, cloud computing, cybersecurity basics, and telecommunication trends.
9. Ethics and Values in the Engineering Profession: Professional codes of conduct, ethical dilemmas, whistleblowing, corporate governance, and societal responsibilities of engineers.
10. Material Science and Engineering: Chemical, electrical, and mechanical properties of metals, polymers, ceramics, and composites.

Detailed Branch-Wise UPSC ESE Technical Syllabus

1. ESE Civil Engineering Syllabus

Civil Engineering: Paper 1

• Building Materials: Timber, bricks, cement, aggregate, concrete technology, mortar, paints, varnishes, and modern structural materials.
• Solid Mechanics (Strength of Materials): Stresses, strains, Mohr’s circle, shear force and bending moment diagrams, torsion, thin/thick cylinders, and deflection of beams.
• Structural Analysis: Indeterminacy, energy theorems, influence lines, trusses, arches, moment distribution method, and matrix stiffness/flexibility methods.
• Design of Steel Structures: Working stress and limit state design, bolted and welded connections, tension and compression members, beams, plate girders, and industrial roofs.
• Design of Concrete & Masonry Structures: Limit state design of beams, slabs, columns, and footings (IS 456), prestressed concrete fundamentals, and load-bearing masonry walls.
• Construction Practice, Planning & Management: Construction equipment, project planning techniques (CPM/PERT), bar charts, quality control, contracts, and tender management.

Civil Engineering: Paper 2

• Fluid Mechanics, Open Channel Flow & Hydraulic Machines: Fluid properties, kinematics, dynamics, Navier-Stokes basics, dimensional analysis, boundary layer theory, uniform and non-uniform flow in open channels, hydraulic jump, pumps, and turbines.
• Hydrology & Water Resources Engineering: Hydrological cycle, rainfall-runoff estimation, flood routing, reservoir planning, groundwater flow, well hydraulics, and irrigation water requirements.
• Environmental Engineering: Water supply systems, water quality standards, treatment processes, wastewater collection and treatment, sludge disposal, air pollution control, and solid waste management.
• Geotechnical Engineering & Foundation Engineering: Soil composition, phase relationships, permeability, consolidation, shear strength, earth pressure theories, bearing capacity of shallow footings, and pile foundations.
• Surveying & Geology: Linear measurements, levelling, theodolite surveying, photogrammetry, remote sensing, GPS/GIS, and engineering geology basics.
• Transportation Engineering: Highway geometric design, pavement design (flexible and rigid), traffic engineering, railway track geometry, points and crossings, and airport runway design.

2. ESE Mechanical Engineering Syllabus

Mechanical Engineering: Paper 1 (Fluid Mechanics & Thermal Engineering)

• Fluid Mechanics: Basic properties, fluid statics, kinematics, dynamics, viscous flow, flow through pipes, compressible flows, boundary layer concepts, and hydraulic machinery.
• Thermodynamics & Heat Transfer: First and second laws of thermodynamics, entropy, availability, pure substances, ideal gas cycles, modes of heat transfer (conduction, convection, radiation), and heat exchangers.
• Internal Combustion (IC) Engines: Spark Ignition (SI) and Compression Ignition (CI) engine cycles, combustion processes, fuels, knock phenomena, emissions, and testing standards.
• Refrigeration & Air Conditioning (RAC): Vapour compression and absorption cycles, psychrometry, cooling load calculations, refrigerants, and environmental considerations.
• Turbo-machinery & Power Plant Engineering: Steam generators, Rankine cycle, Brayton cycle, gas turbines, steam turbines, velocity compounding, combined cycle plants, and renewable energy systems.

Mechanical Engineering: Paper 2 (Design, Manufacturing & Industrial)

• Engineering Mechanics: Free body diagrams, equilibrium, friction, kinematics of particles and rigid bodies, impulse, momentum, and virtual work.
• Strength of Materials: Stress-strain relations, bending and shear stresses, Mohr’s circle, deflection of beams, torsion of shafts, columns, and thin/thick shells.
• Theory of Machines & Vibrations: Kinematic analysis of mechanisms, gear trains, flywheels, governors, balancing of reciprocating/rotary masses, and single-degree-of-freedom vibrations.
• Machine Design: Failure theories, design for fatigue, design of shafts, springs, gears, clutches, brakes, bearings, and threaded fasteners.
• Manufacturing Processes & Materials: Casting, welding, forming, machining, non-traditional machining methods, metrology, inspection, phase diagrams, and heat treatment of steel.
• Industrial & Maintenance Engineering: Production planning and control, inventory control models (EOQ), linear programming, queuing theory, forecasting, reliability, and maintenance management.

3. ESE Electrical Engineering Syllabus

Electrical Engineering: Paper 1

• Electromagnetic Theory: Electrostatics, magnetostatics, Maxwell’s equations, plane wave propagation, transmission lines, and boundary conditions.
• Electrical Materials: Conducting, dielectric, and magnetic materials, semiconductor physics, insulators, and superconductors.
• Network Theory & Circuit Analysis: Circuit analysis laws, network theorems (Thevenin, Norton, Superposition), transient response, two-port networks, sinusoidal steady-state analysis, and resonance.
• Measurements and Instrumentation: Analog and digital measuring meters, bridge measurements, transducers, error analysis, oscilloscope (CRO), and digital instruments.
• Basic Electronics Engineering: Diode circuits, bipolar junction transistors (BJT), field-effect transistors (FET), operational amplifiers (Op-Amps), and active filters.

Electrical Engineering: Paper 2

• Analog and Digital Electronics: Combinational and sequential circuits, multiplexers, counters, registers, A/D and D/A converters, and microprocessor basics (8085/8086 architectures).
• Control Systems: Transfer functions, block diagrams, signal flow graphs, transient and steady-state responses, Routh-Hurwitz criteria, Nyquist plot, Bode plot, and state variable analysis.
• Electrical Machines: Single-phase and three-phase transformers, DC machines, induction motors, synchronous machines, characteristics, testing, and speed control.
• Power Systems: Power generation, transmission lines models, cable characteristics, load flow studies (Gauss-Seidel, Newton-Raphson), fault analysis, power system stability, and protection schemes.
• Power Electronics and Electric Drives: Thyristors, MOSFETs, IGBTs, rectifiers, inverters, choppers, cycloconverters, switch-mode power supplies (SMPS), and motor drive controls.

4. ESE Electronics & Telecommunication Engineering (E&T) Syllabus

Electronics & Telecom: Paper 1

• Basic Electrical Engineering: Circuit elements, mesh and nodal analysis, network theorems, steady-state sinusoidal analysis, and magnetic circuits.
• Materials Science: Solid state physics, crystal structures, insulating materials, semiconductors, magnetic materials, and ceramic materials.
• Electronic Devices & Circuits: Carrier transport in semiconductors, PN junction diodes, Zener diodes, BJTs, JFETs, MOSFETs, optoelectronic devices, and power devices.
• Analog Circuits: Small signal amplifiers, frequency response, feedback amplifiers, oscillators, operational amplifiers, and wave shaping circuits.
• Digital Circuits: Boolean algebra, logic gates, minimization techniques, arithmetic circuits, flip-flops, state machines, and semiconductor memories.
• Basic Electromagnetic Theory & Antennas: Maxwell’s equations, wave propagation in various media, Poynting vector, transmission lines, Smith chart, waveguides, and antenna arrays.

Electronics & Telecom: Paper 2

• Signals and Systems: Continuous and discrete-time signals, Fourier series, Fourier transform, Laplace transform, Z-transform, and linear time-invariant (LTI) systems.
• Control Systems: Mathematical modeling, feedback control, root locus techniques, frequency domain analysis, compensators, and state-space analysis.
• Communications Engineering: Analog modulation (AM, FM), digital pulse modulation (PCM, DPCM), digital modulation (ASK, FSK, PSK, QAM), information theory, error control coding, satellite communication, and optical fibers.
• Computer Organization & Architecture: CPU architecture, memory hierarchy, input/output interfacing, cache memories, pipelining, operating system principles, and networking basics.
• Electro Magnetics & Advanced Communications: Microwave circuits, radar systems, cellular networks (GSM, LTE, 5G architectures), and satellite transponders.

Comparison: GATE and ESE Syllabus

How to Download UPSC ESE Syllabus PDF

1. Visit the official Commission website at upsc.gov.in.
2. Hover over the “Examinations” menu in the top navigation.
3. Click on “Active Examinations”.
4. Select “Engineering Services (Preliminary) Examination”.
5. Download the official UPSC ESE Notification PDF containing the complete, unedited syllabus in Appendix I.

Recommended Books & Study Material for ESE

General Studies & Engineering Aptitude (Paper 1)

• General Studies & Engineering Aptitude by Made Easy Publications
• Engineering Mathematics by B.S. Grewal
• A Modern Approach to Verbal & Non-Verbal Reasoning by R.S. Aggarwal

Branch-Specific Standard Reference Books

Subject-Wise Weightage & Preparation Strategy

1. Prelims Strategy: Balancing Paper 1 & Paper 2

• Do Not Ignore Paper 1: Many technically strong students fail the prelims cutoff because they neglect the non-technical paper. Dedicate at least 30% of your daily study schedule to Engineering Mathematics, Ethics, Environment, and Project Management.
• Practice Previous Year Questions (PYQs): Solve at least the last 15–20 years of objective questions for your core discipline. UPSC frequently repeats core concepts and problem patterns.
• Time Management: In Paper 2, you have 180 minutes to solve 150 questions (roughly 1.2 minutes per question). Prioritize theoretical questions and quick calculations; skip lengthy problems on your first pass through the paper.

2. Mains Strategy: Mastering the Conventional Papers

• Focus on Step-by-Step Working: UPSC awards step marks in conventional papers. Always state your design assumptions, write down the governing formula first, and clearly box your final numerical answer with appropriate units.
• Neat Sketches and Diagrams: Use a pencil to draw neat, labeled diagrams, free-body sketches, and circuit schematics. Visual presentations often separate high scorers from average candidates.
• Derivations & Standard Proofs: Frequently practiced textbook derivations (e.g., thermodynamic cycles, boundary layer equations, machine power equations) are high-scoring and predictable.

Frequently Asked Questions (FAQs)

What is the difference between ESE and IES?

Is there negative marking in the UPSC ESE exam?

Can Computer Science Engineering (CSE) graduates appear for UPSC ESE?

Is the ESE syllabus the same as the GATE syllabus?

Where can I download the official UPSC ESE syllabus PDF?