Mechanical Engineering Main 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; simpleproblems 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 bearingstress; material properties for dynamic loading; bending shear and stresses in beams;. determination ofprinciple stresses and strains - analytical and graphical; compound and combined stresses; bi-axialstresses - thin walled pressure vessel; material behaviour and design factors for dynamic load; design ofcircular shafts for bending and torsional load only; deflection of beam for statically determinateproblems; 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-metals- plastics, ceramics, composite materials and nano-materials.

3. Theory of Machines:

Kinematic and dynamic analysis of plane mechanisms. Cams, Gears and epicyclic gear trains,flywheels, governors, balancing of rigid rotors, balancing of single and multicylinder engines, linearvibration analysis of mechanical systems (single degree of freedom), Critical speeds and whirling ofshafts.

4. Manufacturing Science:

4.1 Manufacturing Process:

Machine tool engineering – Merchant's force analysis; Taylor's tool life equation; conventionalmachining; NC and CNC machining process; jigs and fixtures.

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

Forming and welding processes- standard processes.

Metrology - concept of fits and tolerances; tools and gauges; 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 ofengineering economic analysis and break- even analysis for product selection, process selection andcapacity planning; predetermined time standards.

System planning; forecasting methods based on regression and decomposition, design and balancing ofmulti model and stochastic assembly lines; inventory management – probabilistic inventory models fororder time and order quantity determination; JIT systems; strategic sourcing; managing inter plantlogistics.

System operations and control: Scheduling algorithms for job shops; applications of statistical methodsfor product and process quality control - applications of control charts for mean, range, percentdefective, 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 totalquality management, developing and managing flexible, lean and agile organizations.

PAPER-II

1. Thermodynamics, Gas Dynamics and Turbine:

1.1 Basic concept of First –law and second law of Thermodynamics; concept of entropy andreversibility; availability and unavailability and irreversibility.

1.2 Classification and properties of fluids; incompressible and compressible fluids flows; effect ofMach number and compressibility; continuity momentum and energy equations; normal and obliqueshocks; 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 offans and compressors; single problems compresses and turbine cascade; open and closed cycle gasturbines; 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, solidand hollow cylinder & spheres.

2.2 Convection heat transfer- Newton's law of convection; free and forces convection; heat transferduring laminar and turbulent flow of an incompressible fluid over a flat plate; concepts of Nusseltnumber, hydrodynamic and thermal boundary layer their thickness; Prandtl number; analogy betweenheat and momentum transfer- Reynolds, Colbum, Prandtl analogies; heat transfer during laminar andturbulent 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'sdisplacement etc.

2.4 Basic heat exchanger analysis; classification of heat exchangers.

3. I .C. Engines:

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

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

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

4. Steam Engineering:

4.1 Steam generation- modified Rankine cycle analysis; Modern steam boilers; steam at critical andsupercritical pressures; draught equipment; natural and artificial draught; boiler fuels solid, liquid andgaseous fuels. Steam turbines - principle; types; compounding; impulse and reaction turbines; axialthrust.

4.2 Steam nozzles- flow of steam in convergent and divergent nozzle; pressure at throat for maximumdischarge with different initial steam conditions such as wet, saturated and superheated, effect ofvariation 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; eco-friendly refrigerants -R134a,123; Systems like evaporators, condensers, compressor, expansion devices. Simple vapourabsorption systems.

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

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