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UPSC Mains Optional

Mechanical Engineering Optional test series

26 tests (12 sectional + 14 full-length), each evaluated by experts within 2 hours, with model answers written around your own style.

₹9,999for all 26 tests

26tests
2 hoursevaluation
1500+question bank
330+target score

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Everything is delivered and submitted on WhatsApp. Evaluated reports and analytics appear on your dashboard.

Test series

Mechanical Engineering test series

12 sectional + 14 full-length tests

₹9,999

  • Expert evaluation within 2 hours
  • Model answers built on your writing style
  • Your score vs UPSC weightage graphs
  • 12 years of topic and subtopic analytics
  • Personalise your test dates after joining

Daily practice

3 questions per day for 6 months

₹9,000

  • Same-day evaluation and feedback
  • Weak-area analysis
  • Model solutions
  • Delivered and submitted on WhatsApp

Topic-wise PYQs

Last 10 years, organised by topic

₹250

  • Average yearly weightage per topic
  • UPSC focus areas highlighted
  • Quick reference for revision

PYQ solutions

2014-2024 model solutions, topic-wise

₹1,250

  • Detailed, easy-to-follow solutions
  • Learn how strong answers are structured
  • Built to lift your score toward 330+

Test schedule

12 sectional tests followed by 14 full-length mocks.

TestTypeTopicDate
1 Sectional – Paper I Engineering Mechanics 03-Oct
2 Sectional – Paper I Engineering Materials 04-Oct
3 Sectional – Paper I Theory of Machines 10-Oct
4 Sectional – Paper I Manufacturing Science 11-Oct
5 Sectional – Paper I Manufacturing Management 17-Oct
6 Sectional – Paper I Industrial Engineering 18-Oct
7 Sectional – Paper II Thermodynamics 24-Oct
8 Sectional – Paper II Gas Dynamics 25-Oct
9 Sectional – Paper II Heat Transfer 31-Oct
10 Sectional – Paper II Internal Combustion Engines 01-Nov
11 Sectional – Paper II Steam Engineering 07-Nov
12 Sectional – Paper II Refrigeration and Air-conditioning 08-Nov
13 Full-Length Test Paper I – Full Syllabus 14-Nov
14 Full-Length Test Paper II – Full Syllabus 15-Nov
15 Full-Length Test Paper I – Full Syllabus 21-Nov
16 Full-Length Test Paper II – Full Syllabus 22-Nov
17 Full-Length Test Paper I – Full Syllabus 28-Nov
18 Full-Length Test Paper II – Full Syllabus 29-Nov
19 Full-Length Test Paper I – Full Syllabus 05-Dec
20 Full-Length Test Paper II – Full Syllabus 06-Dec
21 Full-Length Test Paper I – Full Syllabus 12-Dec
22 Full-Length Test Paper II – Full Syllabus 13-Dec
23 Full-Length Test Paper I – Full Syllabus 19-Dec
24 Full-Length Test Paper II – Full Syllabus 20-Dec
25 Full-Length Test Paper I – Full Syllabus 26-Dec
26 Full-Length Test Paper II – Full Syllabus 27-Dec

Dates don't suit you? You can personalise your test schedule after joining.

Mechanical Engineering Optional syllabus

The UPSC syllabus this test series covers, topic by topic.

Mechanical Engineering - Paper I

Engineering Mechanics
Mechanics of rigid bodies including equations of equilibrium in space and their application. First and second moments of area. Friction and simple problems involving friction. Kinematics of particles in plane motion. Elementary particle dynamics. Generalized Hooke’s law and its applications. Axial stress, shear stress, bearing stress. Bending and shear stresses in beams. Principal stresses and strains. Compound and combined stresses. Bi-axial stresses in thin-walled pressure vessels. Circular shafts under torsion and bending. Beam deflection for statically determinate beams. Theories of failure.
Engineering Materials
Structure of solids. Properties of common ferrous and non-ferrous materials. Heat treatment of steels. Properties and uses of plastics, ceramics, and composite materials. Introduction to nano-materials.
Theory of Machines
Kinematic and dynamic analysis of plane mechanisms. Cams, gears, and epicyclic gear trains. Flywheels and governors. Balancing of rigid rotors and engines. Vibration analysis of single degree of freedom systems. Critical speeds and whirling of shafts.
Manufacturing Science
Merchant’s force analysis and Taylor’s tool life equation. Machining processes including turning, milling, grinding, and drilling. CNC machine tools and part programming. Non-conventional machining processes such as EDM, ECM, ultrasonic machining, water jet machining, lasers, and plasmas. Metal forming and welding processes. Metrology including limits, fits, tolerances, gauges, comparators, and inspection methods.
Manufacturing Management
Plant location and layout planning methods. Product and process selection using engineering economics. Capacity planning and forecasting. Work measurement and time standards. Assembly line balancing and inventory control models. Just-in-time (JIT) systems, sourcing and logistics. Scheduling algorithms and quality control techniques. Control charts for variables and attributes. Cost of quality, project management, total quality management (TQM). Concepts of flexible, lean, and agile manufacturing.
Industrial Engineering
Principles of productivity and work study. Methods engineering and work simplification techniques. Facility layout and materials handling systems. Ergonomics and human factors engineering. Production planning and control. Value engineering and operations research basics.

Mechanical Engineering - Paper II

Thermodynamics
First and Second Laws of Thermodynamics. Thermodynamic properties and relations. Entropy, reversibility, irreversibility, availability. Thermodynamic cycles including Carnot, Rankine, Otto, Diesel, Brayton, and Stirling. Gas mixtures and psychrometrics. Combustion and stoichiometry. Fuel properties and calorimetry.
Gas Dynamics
Classification and properties of compressible flow. Mach number and isentropic flow relations. Shock waves and expansion waves. Fanno and Rayleigh flows. Flow with friction and heat transfer. Design and performance of fans, blowers, compressors. Axial and centrifugal compressors. Gas turbines with reheat and regeneration.
Heat Transfer
Modes of heat transfer-conduction, convection, radiation. One-dimensional steady and unsteady conduction. Heat transfer from extended surfaces. Free and forced convection including boundary layer theory. Heat exchanger types and effectiveness. Radiation laws-Stefan–Boltzmann, Planck, Wien’s. View factors and radiation shields.
Internal Combustion Engines
Classification and working of IC engines. Thermodynamic cycles and performance parameters. Combustion in SI and CI engines. Ignition and injection systems. Detonation and knocking in petrol and diesel engines. Combustion chamber design. Fuels and fuel additives. Emissions and alternative fuels.
Steam Engineering
Rankine cycle and its modifications with regeneration and reheat. Steam generators, types of boilers, boiler performance. Draught systems. Steam turbines and compounding techniques. Nozzle flow and supersaturation. Wilson line and irreversibilities. Governing methods and efficiency improvements. Combined cycle and cogeneration systems.
Refrigeration and Air conditioning
Vapour compression refrigeration system and p-h, T-s diagrams. Properties and classification of refrigerants (R134a, R123, etc.). System components-evaporators, condensers, compressors, expansion valves. Vapour absorption systems. Psychrometry-properties of moist air, psychrometric chart. Processes-heating, cooling, humidification, dehumidification. Effective temperature and thermal comfort. Cooling load estimation and duct design.

Free 2014 PYQ solutions

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