Gail India Ltd Executive Trainee/Graduate Engineer Written Test Syllabus For Mechanical

Gail India Ltd Executive Trainee/Graduate Engineer Written Exam Syllabus For MECHANICAL

Indicative Syllabus
1 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.
2 Engineering Materials: Structure and properties of engineering materials and their applications, heat treatment, stress-strain diagrams for engineering materials.
3 Strength of Materials: Stress and strain, stress-strain relationship and elastic constants, Mohr’s circle for plane stress and plane strain, thin cylinders, thick-walled vessels; shear force and bending moment diagrams; bending and shear stresses; deflection of beams; torsion of circular members; columns and struts; strain energy and impact loading; thermal stresses; Rotating Rims & Discs; Bending of Curved Bars.
4 Theory of Machines: Displacement, velocity and acceleration analysis of plane mechanisms, kinematic synthesis of mechanisms; dynamic analysis of slider-crank mechanism; gear trains; flywheels; static and dynamic force analysis; balancing of rotating components; governors.
5 Thermodynamics: Thermodynamic system and processes; Zeroth, First and Second laws of thermodynamics;; Carnot cycle. irreversibility and availability; behaviour of pure substances, ideal and real gases; calculation of work and heat in ideal and real processes; Rankine and Brayton cycles with modifications, analysis of thermodynamic cycles related to energy conversion; vapour refrigeration cycle, heat pumps, gas refrigeration, reverse Brayton cycle; moist air: psychrometric chart, basic psychrometric processes. Refrigerant compressors, expansion devices, condensers and evaporators,
6 Energy Conversion: Fuels and combustion; high pressure steam boilers; flow through nozzles; Gas turbines with intercooling, reheat and regenerators, Steam turbines, velocity diagram, power output and efficiency, maximum blade efficiency of single stage impulse turbine, blade friction, compounding of impulse turbine; reaction turbine, degree of reaction, velocity diagram, power output, efficiency; losses in steam turbines, stage efficiency, overall efficiency and reheat factor; governing of steam turbines; steam condensers, condenser vacuum, sources of air leakage & its disadvantages. Steam engines
7 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.
8 Fluid Mechanics: Fluid properties; fluid statics, manometry, buoyancy; control-volume analysis of mass, momentum and energy; fluid acceleration; differential equations of continuity and momentum; Bernoulli’s equation; viscous flow of incompressible fluids; boundary layer; elementary turbulent flow; flow through pipes, head losses in pipes, bends etc.
9 Vibrations: Free and forced vibration of single degree of freedom systems; effect of damping; harmonically excited and transient vibrations; introduction to multi-degree of freedom systems; vibration isolation; resonance, critical speeds of shafts.
10 Design: Design for static and dynamic loading; failure theories; fatigue strength and the S-N diagram; principles of the design of machine elements such as bolted, riveted and welded joints, shafts, spur gears, rolling and sliding contact bearings, keys, couplings, brakes and clutches; Selection of Materials.
11 Fluid Machines: Pelton, Francis, propeller and Kaplan turbines; performance characteristics and governing of hydraulic turbines; introduction to Deriaz and Bulb turbines; selection of turbines; Centrifugal & axial pumps and fans, reciprocating pumps.
12 Joining: Chemistry of welding, design of welding joints, pre- and post-heat treatment of welded joints; brazing and soldering; adhesive bonding.
13 Machining and Machine Tool Operations: Mechanics of metal cutting and chip formation, single and
multi-point cutting tools, tool geometry and materials, tool life and wear; principles of nonconventional machining processes; principles of work clamping, principles of design of jigs and fixtures.
14 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.
15 Computer Integrated Manufacturing: Basic concepts of CAD/CAM and their integration tools.
16 Production Planning and Control: Forecasting models, aggregate production planning, scheduling, materials requirement planning.
17 Inventory Control: Deterministic and probabilistic models; safety stock inventory control systems, economic order quantity.
18 Operations Research: Linear programming, simplex and duplex method, transportation, assignment, network flow models, simple queuing models, PERT and CPM.
19 Product Design and Development: Principles of good product design, tolerance design; quality and cost considerations; product life cycle; standardization, simplification, diversification, value engineering and analysis, concurrent engineering.
20 Industrial Safety: Introduction, types of accidents, causes and common sources of accidents, methods of safety, first aid.
21 Engineering Economy and Costing: Elementary cost accounting and methods of depreciation; breakeven analysis, techniques for evaluation of capital investments, financial statements.
22 Management Information System: Value of information; information storage and retrieval system – database and data structures; knowledge based systems.
23 I.C. Engines: (I.C. Engines: air-standard Otto, Diesel cycles, Requirements and suitability of fuels in IC engines, fuel ratings, fuel- air mixture requirements, normal combustion in SI and CI engines, engine performance calculations.
Air Compressor: (Reciprocating, Centrifugal and axial flow compressors, Isothermal, adiabatic and polytrophic compression, staging the compression process, intercooling and aftercooling, minimum work requirement, volumetric efficiency.
Metal casting: (Casting processes- Design of patterns / pattern making, moulds and cores, solidification and cooling, design of casting, riser and gating design casting defects)
Metal working: (Stress-strain diagrams for ductile and brittle material, Plastic deformation and yield criteria, fundamentals of hot and cold working processes-forging, rolling, extrusion, wire drawing, sheet metal working, punching, blanking, bending, deep drawing, coining and spinning

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