|Mechanical Engineering -
of Part B - Main Examination of Civil Services Exam
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Mechanics of rigid bodies:
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.
Mechanics of deformable bodies:
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
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.
Theory of Machines:
and dynamic analysis of plane mechanisms. 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.
tool engineering – Merchant’s force analysis; Taylor’s tool life equation;
conventional machining; NC and CNC machining process; jigs and fixtures.
machining – EDM, ECM, ultrasonic, water jet machining etc; application of
lasers and plasmas; energy rate calculations.
and welding processes- standard processes.
- concept of fits and tolerances; tools and gauges; comparators; inspection of
length; position; profile and surface finish.
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
planning; forecasting methods based on regression and decomposition, design and
balancing of multi model and stochastic assembly lines; inventory management –
probabilistic inventory models for order time and order quantity determination;
JIT systems; strategic sourcing; managing inter plant logistics.
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.
improvement: Implementation of systems, such as total quality management,
developing and managing flexible, lean and agile organizations.
Thermodynamics, Gas Dynamics and Turbine:
Basic concept of First –law and second law of Thermodynamics; concept
of entropy and reversibility; availability and unavailability and
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.
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.
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 & spheres.
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.
Black body radiation - basic radiation laws such as Stefan-Boltzman,
Planck distribution, Wein’s displacement etc.
Basic heat exchanger analysis; classification of heat exchangers.
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 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.
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- 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.
Rankine cycle with internal and external irreversibility; reheat factor;
reheating and regeneration, methods of governing; back pressure and pass out
Steam power plants - combined cycle power generation; heat recovery steam
generators (HRSG) fired and unfired, co-generation plants.
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.
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