Mechanical Engineering Syllabus for UPSC Main Exam 2020

Check Out What Covers in the Syllabus of UPSC Mechanical Engineering 2020

There are more than 40 optional subjects that you can choose from in the UPSC Mains exam 2020 this year. As you must know that the optional subject can give you 500 marks divided into 2 papers of 250 each. The scope of the syllabus of Mechanical Engineering is wide. It covers topics that involve the application of concepts like manufacturing, air conditioning, the theory of machines, and alike.

Mechanical Engineering is a good option for Engineering graduates who aspire to become an IAS. The knowledge acquired by them in their graduation years helps a lot and it makes easier for them to score good marks in this optional subject.

Below is the detailed and the latest syllabus of the UPSC mechanical engineering 2020 for you. As we have already mentioned above that there will be 2 papers of 250 marks each. The syllabus is also bifurcated paper wise.

Latest Syllabus of the UPSC Mechanical Engineering 2020 - Paper - I

Topic 1 - Mechanics

This topic is further sub-divided into 2 topics i.e. Mechanics of rigid bodies and Mechanics of deformable bodies. The former part imparts the knowledge of the application of establishing equilibrium in space, fundamental problems for testing the concept of friction. Besides that, it also includes the education of kinematics of particles for plane motions.

In the later part of the topic, it covers the very popular Hooke’s law and how it applies in the real-life situation. The topic of Stress is very vast which includes shear stress, problems on axial stress, stresses in the beam, and bearing stress. In each category, there are many subtopics.

Topic 2 - Engineering Materials

The basic knowledge of all the Engineering materials is covered in this topic. It imparts the idea of the structure of solids, ferrous and non-ferrous materials along with their applications. In addition, it also gives the generalized idea of steels, non-metals, plastics, ceramics, composite materials, and nano-materials.

Topic 3 - Theory of Machines

This is quite an easy topic for the Engineering students which covers Kinematic and dynamic analysis of plane mechanisms and educate the aspirants on the topics like Cams, Gears and epicyclic gear trains, flywheels, governors, balancing of rigid rotors, balancing of single and multicylinder engines, linear vibration analysis of mechanical systems (single degree of freedom), Critical speeds and whirling of shafts.

Topic 4 - Manufacturing Process

It gives knowledge of engineering tools like Merchant’s force analysis, application of lasers and plasmas; Metrology – what is fits and tolerances; tools and gauges; comparators; inspection of length; position; profile and surface finish, Non-conventional machining – EDM, ECM, ultrasonic, water jet machining, etc., Taylor’s tool life equation; conventional machining; NC and CNC machining process; jigs and fixtures.

Topic 5 - Manufacturing Management

This topic gives the idea of system design. System design teaches on the concepts of plant layout, applications of engineering economic analysis and break-even analysis for product selection. It also covers system planning and forecasting, design and balancing of multi model and stochastic assembly lines; inventory management – probabilistic inventory models for order time and order quantity determination. Apart from that, it includes 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.

Latest Syllabus of the UPSC Mechanical Engineering 2020 - Paper - II

Topic 1 - Thermodynamics, Gas Dynamics, and Turbine

It includes the fundamental concepts of laws of Thermodynamics - 1st and 2nd law. The other topics are classification and properties of fluids which include 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 the duct with frictions that transfer. Then, the theory of 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; how work is done in the gas turbine; reheat and regenerators.

Topic 2 - Heat Transfer

This topic covers conduction heat transfer which includes general conduction equation – Laplace, Poisson and Fourier equations; Fourier law of conduction; one-dimensional steady-state heat conduction applied to the simple wall, solid and hollow cylinder & spheres.

Convection heat transfer- Newton’s law of convection; free and forces convection; heat transfer during the laminar and turbulent flow of an incompressible fluid over a flat plate; concepts of Nusselt number, etc.

Blackbody radiation – basic radiation laws such as Stefan-Boltzmann, Planck distribution, Wein’s displacement, etc.

Topic 3 - I. C. Engines

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

Combustion in SI and CI engines, normal and abnormal combustion; effect of working parameters on knocking, reduction of knocking; Forms of the combustion chamber for SI and CI engines; rating of fuels; additives; emission. Different systems of IC engines- fuels; lubricating; cooling and transmission systems, Alternate fuels in IC engines

Topic 4 - Steam Engineering

Steam generation- modified Rankine 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

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

Topic 5 - Refrigeration and Air-conditioning

Vapour compression refrigeration cycle – cycle on p-H & T-s diagrams; eco-friendly refrigerants – R134a,123; Systems like evaporators, condensers, compressor, expansion devices. Simple vapour absorption systems.

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