UPSC – Mechanical Engineering Syllabus

PAPER I 

1. Mechanics : 

1.1 Mechanics of Rigid Bodies : 

Equations of equilibrium in space and its application; first and second moments of area; simple problems  on friction; kinematics of particles for plane motion; elementary particle dynamics. 

1.2 Mechanics of Deformable Bodies : 

Generalized Hooke’s law and its application; design problems on axial stress, shear stress and bearing  stress; material properties for dynamic loading; bending shear and stresses in beams; determination of  principle stresses and strains-analytical and graphical; compound and combined stresses; bi-axial  stresses-thin walled pressure vessel; material behaviour and design factors for dynamic load; design of  circular shafts for bending and torsional load only; deflection of beam for statically determinate problems;  theories of failure. 

2.Engineering Materials : 

Basic concepts on structure of solids, common ferrous and non-ferrous materials and their applications;  heat-treatment of steels; non-metalsplastics, cermics, composite materials and nano-materials. 

3.Theory of Machines : 

Kinematic and dynamic analysis of plane mechanisms. Cams, Gears and empicyclie gear trains, flywheels,  governors, balancing of rigid rotors, balancing of single and multicy- linder engines, linear vibration  analysis of mechanical systems (single degree of freedom), Critical speeds and whirling of shafts. 

4. Manufacturing Science : 

4.1 Manufacturing Process:

Machine tool engineering – Merhant’s force analysis: Taylor’s tool life equation; conventional machining;  NC and CNC machining process; jigs and fixtures. 

Non-conventional machining-EDM, ECM, ultrasonic, water jet machining etc.; application of lasers and  plasmas; energy rate calculations. 

Forming and welding processes-standard processes. 

Metrology-concept of fits and tolerances; tools and guages; comparators; inspection of length; position;  profile and surface finish. 

4.2 Manufacturing Management : 

System design: factory location—simple OR models; plant layout-methods based; applications of  engineering economic analysis and break-even analysis for product selection, process selection and  capacity planning; predetermined time standards. 

System planning; forecasting methods based on regression and decomposition, design and blancing of  multi model and stochastic assembly lines; inventory management-probablistic inventory models for  order time and order quanitity determination; JIT systems; strategic sourcing; managing inter plant  logistics. 

System operations and control: Scheduling algorithms for job shops; applications of statistical methods  for product and process quality control applications of control charts for mean, range, percent defective,  number of defectives and defects per unit; quality cost systems; management of resources, organizations  and risks in projects. 

System improvement: Implementation of systems, such as total quality management, developing and  managing flexible, lean and agile Organizations. 

PAPER II 

1. Thermodynamics, Gas Dynamics Turbine : 

1.1 Basic concept of First-law and Second law of Thermodynamics; concept of entropy and reversibility;  availability and unavailability and irreversibility. 

1.2 Classification and properties of fluids; incompressible and compressible fluids flows; effect of Mach  number and compressibility; continuity momentum and energy equations; normal and oblique shocks;  one dimensional isentropic flow; flow or fluids in duct with frictions that transfer. 

1.3 Flow through fans, blowers and compressors; axial and centrifugal flow configuration; design of fans  and compressors; single problems compresses and turbine cascade; open and closed cycle gas turbines;  work done in the gas turbine; reheat and regenerators. 

2. Heat Transfer : 

2.1 Conduction heat transfer—general conduction equation-Laplace, Poisson and Fourier equations;  Fourier law of conduction; one dimensional steady state heat conduction applied to simple wall, solid and  hollow cylinder and spheres. 

2.2 Convection heat transfer—Newton’s law of convection; free and forces convection; heat transfer during  laminar and turbulent flow of an incompressible fluid over a flat plate; concepts of Nusselt number,  hydrodynamic and thermal boundary layer their thickness; Prandtl number; analogy between heat and  momentum transfer—Reynolds, Colbum, Prandtl analogies; heat transfer during laminar and turbulent  flow through horizontal tubes; free convection from horizontal and vertical plates.

2.3 Black body radiation—basic radiation laws such as Stefan-boltzman, Planck distribution, Wein’s  displacement etc. 

2.4 Basic heat exchanger analysis; classification of heat exchangers. 

3. Engines : 

3.1 Classification, themodynamic cycles of operation; determination of break power, indicated power,  mechanical efficiency, heat balance sheet, interpretation of performance characteristics, petrol, gas and  diesel engines. 

3.2 Combustion in SI and CI engines, normal and abnormal combustion; effect of working parameters on  knocking, reduction of knocking; Forms of combustion chamber for SI and CI engines; rating of fuels;  additives; emission. 

3.3 Different systems of IC engines-fuels; lubricating; cooling and transmission systems. Alternate fuels  in IC engines. 

4. Steam Engineering : 

4.1 Steam generation—modified Ranking cycle analysis; Modern steam boilers; steam at critical and  supercritical pressures; draught equipment; natural and artificial draught; boiler fuels solid, liquid and  gaseous fuels. Steam turbines—Principle; types; compounding; impulse and reaction turbines; axial  thrust. 

4.2 Steam nozzles—flow of steam in convergent and divergent nozzle pressure at throat for maximum  discharge with different initial steam conditions such as wet, saturated and superheated, effect of  variation of back pressure; supersaturated flow of steam in nozzles, Wilson line. 

4.3 Rankine cycle with internal and external irreversibility; reheat factor; reheating and regeneration,  methods of governing; back pressure and pass out turbines. 

4.4 Steam power plants—combined cycle power generation; heat recovery steam generators (HRSG) fired  and unfired, co-generation plants. 

5. Refrigeration and Air-conditioning : 

5.1 Vapour compression refrigeration cycle—cycle on p-H & T-s diagrams; ecofriendly refrigerants—R  134a. 123; Systems like evaporators, condensers, compressor, expansion devices. Simple vapour  absorption systems. 

5.2 Psychrometry—properties; processes; charts; sensible heating and cooling; humidification and  dehumidification effective temperature; air-conditioning load calculation; simple duct design.