The UPSC IES/ESE Syllabus for the Category II Mechanical Engineering is as given below. The syllabus for Paper II of the Preliminary (Stage-I Examination – objective type) and Paper-I and Paper – II of the Main (Stage-II Examination-Conventional type) is same.

Candidates can find below the detailed UPSC Syllabus for Category 2 – MechanicalEngineering of Engineering Services Exam conducted by the Commission to recruit candidates for Indian Engineering Service.

  • UPSC Exam Pattern
  • Important Topics in Mechanical Engineering Category
  • Complete UPSC Syllabus

The UPSC Exam Pattern for ESE Prelims (Paper II) and Main (Paper I and Paper II) is as given below.

IES/ESE Prelims MechanicalEngineering Category Paper III Pattern.

Category-IIMechanical Engineering Prelims Paper III
SL. NO. Paper Subject Duration Maximum Marks
1. Paper-II Mechanical Engineering 3 hours 300


IES/ESE MainElectrical Engineering Category Paper I and Paper II Pattern.


1. MechanicalEngineering Paper-I 3 hours 300
2. MechanicalEngineering Paper-II 3 hours 300


Below-given is the list of major topics for prelims and main exam as mentioned in the UPSC Syllabus for IES/ESE

List of Major topics in UPSC Syllabus for IES/ESE Mechanical Engineering Category
Topics in Paper I Topics in Paper II
•         Fluid Mechanics •         Engineering Mechanics
•         Thermodynamics and Heat transfer •         Engineering Materials
•         IC Engines, Refrigeration and Air conditioning •         Mechanisms and Machines
•         Turbo Machinery •         Design of Machine Elements
•         Power Plant Engineering •         Manufacturing, Industrial and Maintenance Engineering
•         Renewable Sources of Energy •         Mechatronics and Robotics


Find below the detailed UPSC Syllabus for IES/ESE Prelims Paper 2 And Mains Paper 1 And Paper 2 of MechanicalEngineering Category.



  1. Fluid Mechanics:
    Basic Concepts and Properties of Fluids, Manometry, Fluid Statics, Buoyancy, Equations of Motion, Bernoulli’s equation and applications, Viscous flow of incompressible fluids, Laminar and Turbulent flows, Flow through pipes and head losses in pipes.
  2. Thermodynamics and Heat transfer:
    Thermodynamic systems and processes; properties of pure substance; Zeroth, First and Second Laws of Thermodynamics; Entropy, Irreversibility and availability; analysis of thermodynamic cycles related to energy conversion: Rankine, Otto, Diesel and Dual Cycles; ideal and real gases; compressibility factor; Gas mixtures.
    Modes of heat transfer, Steady and unsteady heat conduction, Thermal resistance, Fins, Free and forced convection, Correlations for convective heat transfer, Radiative heat transfer – Radiation heat transfer co-efficient; boiling and condensation, Heat exchanger performance analysis.
  3. IC Engines, Refrigeration and Air conditioning:
    SI and CI Engines, Engine Systems and Components, Performance characteristics and testing of IC Engines; Fuels; Emissions and Emission Control. Vapour compression refrigeration, Refrigerants and Working cycles, Compressors, Condensers, Evaporators and Expansion devices, Other types of refrigeration systems like Vapour Absorption, Vapour jet, thermo electric and Vortex tube refrigeration. Psychometric properties and processes, Comfort chart, Comfort and industrial air conditioning, Load calculations and Heat pumps.
  4. Turbo Machinery:
    Reciprocating and Rotary pumps, Pelton wheel, Kaplan and Francis Turbines, velocity diagrams, Impulse and Reaction principles, Steam and Gas Turbines, Theory of Jet Propulsion – Pulse jet and Ram Jet Engines, Reciprocating and Rotary Compressors – Theory and Applications
  5. Power Plant Engineering: Rankine and Brayton cycles with regeneration and reheat, Fuels and their properties, Flue gas analysis, Boilers, steam turbines and other power plant components like condensers, air ejectors, electrostatic precipitators and cooling towers – their theory and design, types and applications;
  6. Renewable Sources of Energy:
    Solar Radiation, Solar Thermal Energy collection – Flat Plate and focusing collectors their materials and performance. Solar Thermal Energy Storage, Applications – heating, cooling and Power Generation; Solar Photovoltaic Conversion; Harnessing of Wind Energy, Bio-mass and Tidal Energy – Methods and Applications, Working principles of Fuel Cells.



  1. Engineering Mechanics:
    Analysis of System of Forces, Friction, Centroid and Centre of Gravity, Dynamics; Stresses and Strains-Compound Stresses and Strains, Bending Moment and Shear Force Diagrams, Theory of Bending Stresses- Slope and deflection-Torsion, Thin and thick Cylinders, Spheres.
  2. Engineering Materials:
    Basic Crystallography, Alloys and Phase diagrams, Heat Treatment, Ferrous and Non Ferrous Metals, Non metallic materials, Basics of Nano-materials, Mechanical Properties and Testing, Corrosion prevention and control
  3. Mechanisms and Machines:
    Types of Kinematics Pair, Mobility, Inversions, Kinematic Analysis, Velocity and Acceleration Analysis of Planar Mechanisms, CAMs with uniform acceleration and retardation, cycloidal motion, oscillating followers; Vibrations –Free and forced vibration of undamped and damped SDOF systems, Transmissibility Ratio, Vibration Isolation, Critical Speed of Shafts. Gears – Geometry of tooth profiles, Law of gearing, Involute profile, Interference, Helical, Spiral and Worm Gears, Gear Trains- Simple, compound and Epicyclic; Dynamic Analysis – Slider – crank mechanisms, turning moment computations, balancing of Revolving & Reciprocating masses, Gyroscopes –Effect of Gyroscopic couple on automobiles, ships and aircrafts, Governors.
  4. Design of Machine Elements:
    Design for static and dynamic loading; failure theories; fatigue strength and the S-N diagram; principles of the design of machine elements such as riveted, welded and bolted joints. Shafts, Spur gears, rolling and sliding contact bearings, Brakes and clutches, flywheels.
  5. Manufacturing ,Industrial and Maintenance Engineering:
    Metal casting-Metal forming, Metal Joining, Machining and machine tool operations, Limits, fits and tolerances, Metrology and inspection, computer Integrated manufacturing, FMS, Production planning and Control, Inventory control and operations research – CPM-PERT. Failure concepts and characteristics-Reliability, Failure analysis, Machine Vibration, Data acquisition, Fault Detection, Vibration Monitoring, Field Balancing of Rotors, Noise Monitoring, Wear and Debris Analysis, Signature Analysis, NDT Techniques in Condition Monitoring.
  6. Mechatronics and Robotics:
    Microprocessors and Microcontrollers: Architecture, programming, I/O, Computer interfacing, Programmable logic controller. Sensors and actuators, Piezoelectric accelerometer, Hall effect sensor, Optical Encoder, Resolver, Inductosyn, Pneumatic and Hydraulic actuators, stepper motor, Control Systems- Mathematical modeling of Physical systems, control signals, controllability and observability. Robotics, Robot Classification, Robot Specification, notation; Direct and Inverse Kinematics; Homogeneous Coordinates and Arm Equation of four Axis SCARA Robot.


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