Himachal Pradesh Public Service Commission HPAS Syllabus for Mains 2021

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Himachal Pradesh Public Service Commission, known commonly as HPPSC, is a government agency and topmost constitutional body of Government of Himachal Pradesh. Here is a detailed syllabus for HPAS Main Exam Optional Paper Mechanical Engineering.

Optional Paper – Mechanical Engineering

PAPER-I

Engineering Mechanics: Free body diagrams and equilibrium; centre of gravity and moment of inertia, trusses and frames; principal of 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; combined bending and direct stresses, slope and deflection of cantilever and simply supported beams with point loads and UDL; torsion of circular shafts; Euler’s theory of columns; strain energy methods; thermal stresses, failure theories, unsymmetrical bending and shear centre, theories of elastic failure.

Theory of Machines: Displacement, velocity and acceleration analysis of plane mechanisms; dynamic analysis of slider-crank mechanism; laws of gearing, gear trains; analysis of cams, governors, flywheels, static and dynamic balancing, design of machine elements such as bolted, riveted and welded joints, shafts, gears, Free and forced vibration of single degree of freedom systems; effect of damping,

Manufacturing and Industrial Engg.: Engg. Materials and their mechanical behaviour, common ferrous and non-ferrous materials, Structure and properties of engineering materials, fatigue and creep, heat treatment, metal casting, design of patterns, moulds and cores; solidification and cooling; riser and gating design, design considerations, plastic deformation and yield criteria; fundamentals of hot and cold working processes; forging, rolling, extrusion, drawing, metal forming processes; welding, brazing and soldering, powder technology.

Mechanics of machining, single and multi-point cutting tools, tool geometry and materials, tool life and wear; machining processes, principles of work holding, jigs and fixtures.

Design of cutting tools, 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, unconventional machining processes, EDM, ECM, USM, LBM, EBM, non-destructive testing.

Production Planning and Control, work and time study, forecasting models, inventory control, inspection and quality control, TQM, aggregate production planning, scheduling, materials requirement planning, Linear programming, simplex and duplex method, transportation, assignment, network flow models, simple queuing models, PERT and CPM.

PAPER-II

Thermodynamics: Zeroth, First and Second laws of thermodynamics; basic concepts of system, control volume, processes; Carnot cycle, behaviour of ideal and real gases, properties of pure substances, steam table and Mollier Diagram, calculation of work and heat in ideal processes; analysis of thermodynamics cycles related to energy conversion: Rankine, Otto, Diesel, Dual, Brayton cycle

Fluid Mechanics: Fluid properties; fluid statics, manometry, buoyancy; control-volume analysis of mass, momentum and energy; applications of linear momentum equation, forces on flat and curved beams, fluid acceleration; differential equations of continuity and momentum; rotation and vorticity, circulation, velocity potential, stream function, Bernoulli’s equation and its application; dimensional analysis, viscous flow of incompressible fluids; boundary layer, flow separation; flow through pipes, major and minor losses, compressible flow, stagnation properties, area velocity relationship, , normal shock waves, flow through converging diverging nozzle.

Heat-Transfer: Modes of heat transfer; one dimensional heat conduction, Fourier’s Law, resistance concept, electrical analogy, critical thickness of insulation, fins, unsteady heat conduction, velocity and thermal boundary layer, dimensionless parameters in free and forced convective heat transfer, various correlations for heat transfer in flow over flat plates and through pipes, boiling and condensation heat transfer, radiative heat transfer, black and grey surfaces, emissive power, shape factors, network analysis; heat exchanger performance, LMTD and NTU methods of design of single and multiple pass heat exchangers.

Energy conversion and environment control: Rankine, Brayton cycles with regeneration and reheat. boilers and condensers, I.C. Engines, working of two stroke and four stroke engines,  combustion in SI and CI engines, knocking and detonation and their control, performance of SI and CI engines, turbo machinery, centrifugal pumps and compressors, steam turbines, velocity and pressure compounding, degree of reaction, Pelton-wheel, Francis and Kaplan turbines – impulse and reaction principles, velocity diagrams, cavitation, Refrigeration and airconditioning: Vapour compression refrigeration cycle, refrigerants, heat pumps, gas refrigeration, aircraft refrigeration, vapour absorption system, moist air properties, psychometric chart, basic psychometric processes, summer air-conditioning, alternate sources of energy, utilization of solar, wind energy, air pollution and its control.

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