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MECHANICAL ENGINEERING Polytechnic TRB

Polytechnic TRB Mechanical Engineering

UNIT 1: ENGINEERING MATHEMATICS

Linear Algebra: Matrix algebra, Systems of linear equations, Eigen values and  eigen vectors. 

Calculus: Functions of single variable, Limit, continuity and differentiability, Mean  value theorems, Evaluation of definite and improper integrals, Partial derivatives,  Total derivative, Maxima and minima, Gradient, Divergence and Curl, Vector  identities, Directional derivatives, Line, Surface and Volume integrals, Stokes, Gauss  and Green’s theorems.  

Differential equations: First order equations (linear and nonlinear), Higher order  linear differential equations with constant coefficients, Cauchy’s and Euler’s  equations, Initial and boundary value problems, Laplace transforms, Solutions of  one dimensional heat and wave equations and Laplace equation. 

Probability and Statistics: Definitions of probability and sampling  theorems, Conditional probability, Mean, median, mode and standard deviation,  Random variables, Poisson, Normal and Binomial distributions.  Numerical Methods: Numerical solutions of linear and non-linear algebraic  equations Integration by trapezoidal and Simpson’s rule, single and multi-step  methods for differential equations.  

UNIT 2: APPLIED MECHANICS AND STRENGTH OF MATERIALS Engineering

Mechanics: Free body diagrams and equilibrium; trusses and  frames; virtual work; kinematics and dynamics of particles and of rigid bodies in  plane motion, including impulse and momentum (linear and angular) and energy  formulations; impact.  

Strength of Materials: Stress and strain, stress-strain relationship and  elastic constants, Mohr’s circle for plane stress and plane strain, thin cylinders; shear  force and bending moment diagrams; bending and shear stresses; deflection of beams;  torsion of circular shafts; Euler’s theory of columns; strain energy methods; thermal  stresses.

UNIT 3: THEORY OF MACHINES AND DESIGN

Theory of Machines: Displacement, velocity and acceleration analysis of  plane mechanisms; dynamic analysis of slider-crank mechanism; gear trains;  flywheels.  

Vibrations: Free and forced vibration of single degree of freedom systems; effect of  damping; vibration isolation; resonance, critical speeds of shafts.  Design of machine elements: Failure theories; principles of design of bolted,  riveted and welded joints, shafts, spur gears, rolling and sliding contact bearings,  brakes and clutches. 

UNIT 4: FLUID MECHANICS AND HYDRAULIC MACHINERY Fluid Mechanics:

Fluid properties; fluid statics, manometry, buoyancy; kinematics  and dynamics of flow; Bernoulli’s equation; viscous flow of incompressible fluids;  boundary layer; elementary turbulent flow; flow through pipes, head losses.  Hydraulic machines, Pelton-wheel, Francis and Kaplan turbines, velocity diagrams.  

UNIT 5: HEAT TRANSFER

Heat Transfer: Modes of heat transfer; one dimensional heat conduction,  resistance concept, electrical analogy, unsteady heat conduction, fins; dimensionless  parameters in free and forced convective heat transfer, various correlations for heat  transfer in flow over flat plates and through pipes; thermal boundary layer; effect of  turbulence; radiative heat transfer, black and grey surfaces, shape factors, network  analysis; heat exchanger performance, LMTD and NTU methods.  

UNIT 6: THERMODYNAMICS

Thermodynamics: Zeroth, First and Second laws of thermodynamics;  thermodynamic system and processes; Carnot cycle. irreversibility and availability;  behaviour of ideal and real gases, properties of pure substances, calculation of  work and heat in ideal processes; analysis of thermodynamic cycles related to  energy conversion.  

Power Engineering: Steam Tables, Rankine, Brayton cycles with regeneration  and reheat. I.C. Engines: air-standard Otto, Diesel cycles. Refrigeration and air conditioning: Vapour refrigeration cycle, heat pumps, gas refrigeration, Reverse  Brayton cycle; moist air: psychrometric chart, basic psychrometric processes. 

UNIT 7: MANUFACTURING ENGINEERING

Engineering Materials: Structure and properties of engineering materials, heat  treatment, stress-strain diagrams for engineering materials.  

Metal Casting: Design of patterns, moulds and cores; solidification and cooling;  riser and gating design, design considerations.  

Forming: Plastic deformation and yield criteria; fundamentals of hot and cold  working processes; load estimation for bulk (forging, rolling, extrusion,  drawing) and sheet (shearing, deep drawing, bending) metal forming  processes; principles of powder metallurgy.  

Joining: Physics of welding, brazing and soldering; adhesive bonding;  design considerations in welding. 

UNIT 8: MACHINING AND MACHINE TOOL OPERATIONS Machining and Machine

Tool Operations: Mechanics of machining, single and  multi-point cutting tools, tool geometry and materials, tool life and wear;  economics of machining; principles of non-traditional machining processes;  principles of work holding, principles of design of jigs and fixtures  Metrology and Inspection: Limits, fits and tolerances; linear and angular  measurements; comparators; gauge design; interferometry; form and finish  measurement; alignment and testing methods; tolerance analysis in  manufacturing and assembly.  

Computer Integrated Manufacturing: Basic concepts of CAD/CAM and their  integration tools.  

UNIT 9: PRODUCTION PLANNING AND CONTROL

Production Planning and Control: Forecasting models, aggregate production  planning, scheduling, materials requirement planning. 

Inventory Control: Deterministic and probabilistic models; safety stock inventory  control systems.  

UNIT 10: OPERATIONS RESEARCH

Operations Research: Linear programming, simplex and duplex method,  transportation, assignment, network flow models, simple queuing models, PERT  and CPM.

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