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(Syllabus) Maharashtra PSC: Mechanical Engineering : Revised Syllabus for State Services (Main) Examination (Optional)
Maharashtra PSC: Mechanical Engineering: Revised Syllabus for State Services (Main) Examination (Optional)
Mechanical Engineering (Code No :
406) Paper - I
Standard : Degree in Mechanical Engineering
Total Marks : 200
Nature of Paper : Conventional Type
Duration : 3 Hours
Note :
1) Answers to this paper must be written in English only.
2) This paper will test the candidate’s ability to comprehend, to analyse, to
interpret, to criticise and to appraise the subject matter related to the
topics/sub topics mentioned below.
3) For judging candidates’ conceptual understanding, appropriate number of
numerical problems will be asked pertaining to the topics/sub topics mentioned
below.
4) It is expected from candidates to study the latest and recent developments
and happenings pertaining to the topics/sub topics mentioned below.
Section - A ( Marks : 50 ) Materials and Their Behaviour
1) Fundamentals : Force, moment, couple, resultant of forces, Equilibrium of
forces, friction and friction angle, columb friction, rolling friction and belt
friction, frictional torque in pivot and Collar bearings, M.I., Work and energy.
2) Strength of Materials : Normal and Shear stresses, Stress-strain
diagram, thermal stresses, shear force and bending moment diagrams, bending
stresses in solid, hollow and built up sections, deflection of beams, shear
stress distribution, strain energy, torsion of bars, shafts and helical springs,
Deflection of beam under different conditions, impact load.
3) Theory of Machines : Kinematic link, pair, chain, Mechanism and
structure, degrees of freedom, Cams, Gear trains, fluctuation of speed and
energy in flywheel, Gyroscope, Balancing of rigid rotor, Single and
multi-cylinder engines and V-engines, belts and chain drives, Hydrodynamic
bearing.
4) Engineering Materials : Crystalline structure of metals and alloys,
defects in crystalline materials, Iron-Carbon equilibrium diagram, plain carbon
steel, alloy steel, cast iron and types, Brass and Bronze, Aluminum, lead, Tin,
Zinc- their properties and applications, Plastic deformation, bearing materials,
plastics, ceramics, composite materials, Heat treatment of steels.
Section - B ( Marks : 50 ) Machine Design
5) Design of Elements : Theories of failure, factor of safety, combined
stresses. Pressure vessels, struts and columns. Design of Screw and bolt, power
screw, Design of Shafts and springs, keys, couplings.
6) Design of Gears : (Spur, helical, bevel and worm), Design of clutches
and brakes, fatigue consideration in design.
7) System Design : Design of mechanical systems, specification of
components, Design of system including material handling systems, power plants,
refrigeration and air conditioning systems, pneumatic and hydraulic systems,
etc.
8) Dynamics of machines : Inertia force analysis, law of gearing,
interference and minimum number of teeth, Longitudinal - transverse and
torsional vibration, free-forced vibration, critical and whirling speed of
shaft, vibration isolation.
Section - C ( Marks : 50 ) Manufacturing Science and Processes
9) Manufacturing Science : Theory of metal cutting, Merchant's force
analysis, Tool materials, Taylor's tool life equation, Machinability, economics,
cutting fluids, Chip removal, Calculation of cutting force on single point
cutting tools, twist drills, milling cutter, broaches, reamers, Jigs and
fixtures. Recent machining methods - EDM, ECM, PAM, Ultrasonic and Laser, etc.
10) Manufacturing Processes : Casting, moulding- Types, equipments and
defects, hot and cold working of metals - blanking, shearing, punching,
piercing, coining, embossing, drawing, spinning and forging, Metal joining
processes- welding, soldering, brazing, High energy rate forming,
electroplating, surface finishing processes.
11) Manufacturing Management : Production planning and control,
forecasting - Moving average, moving range, exponential smoothening, scheduling,
assembly line balancing, Inventory Control - ABC analysis, EOQ models,
Statistical quality control and TQM, TPM. Elements of cost, job costing, process
costing, estimation of machining time.
12) Operation Research : Linear programming - Graphical and simplex
methods, transportation and assignment models, game theory, queuing models, CPM
and PERT, Replacement models, value analysis.
Section - D ( Marks : 50 ) CAD / CAM
13) CAD : Overview and benefits of CAD, primitives, 2D / 3D animation,
Bazier curves and splines, Wire-frame modeling, surface and solid modeling,
kinematic analysis of open and closed loop mechanisms, stiffness matrix, finite
element analysis, optimum design, constrained optimization - Penalty function
method, computer aided optimum design of gears, bearing sand shafts.
14) Product Development : Design materials, human factors in design,
applied ergonomics, product development processes, customer needs, product
specifications, concept generation and selection, product architecture, product
design methods - function analysis, objective trees, QFD, morphological chart
method, weighted objective method, value engineering method. Design for
manufacturing, legal issues in product design, economics.
15) Machine Tool Design : Kinematics of machine Tools, structural and ray
diagrams for speed, stepped and step less regulation of speed, static and
dynamic rigidity of machine tools, Vibration of machine tools, chatter, Slide
ways and guide ways.
16) CAM : Types of automation, Steps in NC manufacturing, manual and NC
part programming, APT, Machining centres, FMS, Computer Aided Process Planning,
CMM, CIMS & its components, Robotics.
Paper - II
Standard : Degree in Mechanical Engineering.
Total Marks : 200
Nature of Paper : Conventional Type
Duration : 3 Hours
Note :
1) Answers to this paper must be written in English only.
2) This paper will test the candidate’s ability to comprehend, to analyse, to
interpret, to criticise and to appraise the subject matter related to the
topics/sub topics mentioned below.
3) For judging candidates’ conceptual understanding, appropriate number of
numerical problems will be asked pertaining to the topics/sub topics mentioned
below.
4) It is expected from candidates to study the latest and recent developments
and happenings pertaining to the topics/sub topics mentioned below.
Section – A ( Marks : 50 ) Thermodynamics, Heat and Mass Transfer
1) Thermodynamics :
1) Fundamentals- Work, Heat, Zeroth law, First law-
application to thermodynamic system components, efficiency, Second law
(theoretical treatment only)- quality of energy, increase of entropy,
availability and irreversibility, applications, Third law.
2) Ideal gas, real gases, compressibility factor, Joule -
Thomson Coefficient. Gas power cycles- Air standard work output and efficiency,
mean effective pressure, indicated power, brake power.
3) Vapour Power Cycles- Carnot and Rankine, Reheating and
regenerative feed heating, Binary vapour cycle, Thermal efficiency and work
ratio.
2) Heat and mass transfer :
1) Various modes of heat transfer, Fourier's, Newton's
and Stefan Boltzman's law, combined modes, overall heat transfer coefficient.
Conduction-Thermal conductivity, factors influencing, measurement, general
differential equation, steady state, linear heat flow through a plain and
composite wall, tube and sphere, conduction with heat sources, heat transfer
from rods, fins of uniform cross section.
2) Convection- Forced and Natural, Heat Exchangers-Types,
performance, analysis restricted to parallel and counter flow exchangers.
Thermal Radiation- Black and non black bodies, Kirchoff's law, grey body
radiation exchange, Mass transfer- mass and mole concentration.
Section - B ( Marks : 50 ) Fluid Mechanics and Machinery, Pneumatics and
Hydraulics, Power Plant Engineering, Energy Engineering
3) Fluid Mechanics : Fluid and flow-definition and types, properties
of ideal and real fluids, Continuum concept, Lagrangian and Eulerian approach.
Fluid statics, Kinematics and Dynamics of fluid, flow in pipes, Laminar flow of
viscous fluids, Turbulent flow, Dimensional analysis, Compressible fluid flow.
4) Fluid Machinery : Introduction-Classification, energy transfer between
fluid and rotor, flow through machines, ideal and actual slip. Hydraulic
turbines, pumps, compressors and blowers.
5) Pneumatics and Hydraulics : Production of compressed air, Pneumatic
control-Components and Systems, electro Pneumatic logic circuits, Pneumatic
counters, Typical applications, Circuits, Sensors.
6) Power Plant Engineering : Sources of energy, variable load problem,
power plant economics and selection. Steam power plant- boilers, general layout,
different systems, turbine auxiliary systems, heat balance and efficiency. Gas
turbine power plant - regeneration, reheating, cogeneration, auxiliary systems,
operation, Nuclear Power Plants - basic components, power stations. Hydro
electric power plant - site selection, arrangement, operation. Electrical
systems and instrumentation.
7) Energy Engineering : Energy conservation methods, audit. Solar energy
- collectors, area calculations, Solar Systems - power plants, driers, cookers,
refrigeration systems. Wind energy - rotors, system design, site selection.
Biogas plants - Types, plant performance, Cogeneration Plants, Geothermal
Plants. Direct Energy Conversion - Fuel Cells, Thermoelectric, Thermionic and
MHD systems, Govt. policies and programmes for energy and environment
conservation.
Section - C ( Marks : 50 ) I.C. Engines, Automobile Engineering,
Refrigeration and Air Conditioning
8) I.C. Engines :
1) Fuel air cycles, real cycles, volumetric efficiency
and thermal efficiency, S.I. Engines - carburetion, combustion, combustion
chambers, C.I. Engines - fuel injection, combustion, combustion chambers.
Detonation - Knock rating of fuels, parameters. Emission Control Systems.
Supercharging - effect of altitude on power output, types of superchargers.
2) Cooling, lubrication and ignition systems, testing of I.C.
engines. Compressors - centrifugal and axial, performance. Gas turbines - Ideal
cycles, intercooling, regeneration, reheating. Jet propulsion.
9) Automobile Engineering : Testing of automobiles, resistances to motion,
power requirement for propulsion, Automobile engines, frames, transmission
systems, drive line and rear axle, wheels and tyres, steering systems,
suspension systems, brakes, starter motors, emission norms.
10) Refrigeration and Air Conditioning : Refrigeration and heating systems,
vapour compression and vapor absorption refrigeration systems, refrigeration
equipments, psychrometrics, solar radiation, estimating requirements, ducting
systems, automotive air conditioning.
Section - D ( Marks : 50 ) Measurement and Metrology, Numerical Analysis and Computer Programming, Numerical Control of Machine Tools, Automatic Control.
11) Mechanical Measurement :
1) Measuring instruments, generalised measuring systems,
static and dynamic performance characteristics of devices, calibration, error -
sources and analysis. Sensors and Tranducers, Measurement of - displacement,
angular velocity, pressure, strain, force and torque, temperature, flow,
vibration and noise. Data acquisition systems.
2) Metrology : Standards of linear measurement, Limits and
Fits, Limit gauges, Measurement of geometric forms, Interferometry, Comparators,
Measurement of screw threads and gears, surface texture.
12) Numerical Analysis and Computer Programming :
Approximations and round of errors, truncation errors and Taylor series,
determination of roots of polynomials and transcendental equations, Programming
using C and C++ languages for - Solutions of linear simultaneous algebraic
equations, curve fitting, Backward, forward and Central Difference relations,
Numerical solution of ordinary differential equations.
13) Numerical Control of Machine Tools : Components, open and closed loop
control, actuation and feedback systems, Point to Point, linear and contouring
systems, Tooling for NC systems, Computer numerical control, Direct and
distributed numerical control, adaptive control.
14) Automatic Control : Components of automation - actuators, sensors,
vision systems, controllers, Logic control and PLCs, Factory communication,
Mathematical models, transfer function, Block diagrams, proportional controls,
derivative and integral control, steady state and transient response analysis,
different inputs, root locus, frequency response methods, speed control systems.