Mechanical Engineering
Paper I
1. Theory of Machines
Kinematic and dynamic analysis of planar
mechanisms. Cams, Gears and gear trains, Flywheels, Governors, Balancing of
rigid rotors, Balancing of single and multicylinder engines, Linear vibration
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analysis of mechnical systems (single degree and two degrees of freedom),
Critical speeds and whirling of shafts, Automatic Controls, Belts and chain
drives. Hydrodynamic bearings.
2. Mechanics of Solids :
Stress and strain in two dimensions.
Principal stresses and strains, Mohr�s construction, linear elastic materials,
isotropy and an isotropy, Stress-strain relations, unlaxial loading, thermal
stresses. Beams : Banding moment and shear force diagrams, bending stresses and
deflection of beams, Shear stress distribution. Torsion of shafts, helical
springs. Combined stresses, Thick and thin walled pressure vessels. Struls and
columns, Strain energy concepts and theories of failure. Rotation discs. Shrink
fits.
3. Enginerring Materials :
Basic concepts on structure of solids,
Crystalline materials, Defects in crystalline materials, Alloys and binary phase
diagrams, structure and properties of common engineering materials. Heat
treatment of steels. Plastics, Ceramics and composite Materials, common
applications of various materials.
4. Manufacturing Science :
Marchant�s force analysis, Taylor�s tool
life equation, machinability and machining economics, Rigid, small and flexible
automation, NC, CNC. Recent machining methods- EDM, ECM and ultrasonics.
Application of lasers and plasmas, analysis of forming processes. High energy
rate forming. Jigs, fixtures, tools and gauges, Inspection of length, position,
profile and surface finish.
5. Manufacturing management :
Production Planning and Control,
Forecasting-Moving average, exponential smoothing, Operations sheduling;
assembly line balancing. Product development. Breakeven analysis, Capacity
planning. PERT and CPM.
Control Operations : Inventory control-ABC
analysis. EOQ model. Materials requirement planning. Job design, Job standards,
work measurement, Quality management-Quality control. Operations Research :
Linear programming-Graphical and Simplex methods. Transportation and assignment
models. Single server queuing model.
Value Engineering : Value analysis, for
cost/value. Total quality management and forecasting techniques. Project
management.
6. ELEMENTS OF COMPUTATION :
Computer Organisation, Flow charting.
Features of Common Computer Languages-FORTRAN d Base III, Lotus 1-2-3 C and
elementary programming.
PAPER-II
1. THERMODYNAMICS :
Basic concept. Open and closed systems,
Applications of Thermodynamic Laws, Gas equations, Clapeyron equation,
Availability, Irreversibility and Tds relations.
2. I.C. Engines, Fuels and Combustion :
Spark lgnition and compression ignition
engines, Four stroke engine and Two stroke engines, mechanical, thermal and
volumetric efficiency, Heat balance.
Combustion process in S.I. and C.I.
engines, preignition detonation in S.I. engine Diesel knock in C.I. engine.
Choice of engine fuels, Octance and Cetane retings. Alternate fuels Carburration
and Fuel injection, Engine emissions and control. Solid, liquid and gaseous
fuels, stoichometric air requirements and excess air factor, fuel gas analysis,
higher and lower calorific values and their measurements.
3. HEAT TRANSFER, REFRIGERATION AND AIR
CONDITIONING :
One and two dimensional heat conduction.
Heat transfer from extended surfaces, heat transfer by forced and free
convection. Heat exchangers. Fundamentals for diffusive and connective mass
transfer, Radiation laws, heat exchange between black and non balck surfaces,
Network Analysis. Heat pump refrigeration cycles and systems, Condensers,
evaporators and expansion devices and controls. Properties and choice of
refrigerant, Refrigeration Systems and components, psychometrics, comfort
indices, cooling loading calculations, solar refrigeration.
4. TURBO-MACHINES AND POWER PLANTS :
Continuity, momentum and Energy Equations.
Adiabatic and Isentropic flow, fanno lines, Raylegh lines. Theory and design of
axial flow turbines and compressors, Flow through turbo-machine balde, cascades,
centrifugal compressor. Dimensional analysis and modelling. Selection of site
for steam, hydro, nuclear and stand-by power plants, selection base and peak
load power plants Modern High pressure, High duty boilers, Draft and dust
removal equipment, Fuel and cooling water systems, heat balance, station and
palnt heat rates, operation and maintenance of various power plants, preventive
maintenance, economics of power generation.
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