Course Objective
To impart basic knowledge in mechanical engineering
Thermodynamics: Basic concepts and definitions, Gas laws, specific heat –Universal gas constantIsothermal, adiabatic and polytrophic processes, work done, heat transferred, internal energy and entropy - Cycles: Carnot, Otto and Diesel- Air standard efficiency. Basic laws of heat transfer (Fourier’s law of heat conduction, Newton’s law of cooling Steffen Boltzmann’s law)
I.C. Engines: Classification of I.C Engines, Different parts of I.C engines, Working of two stroke and four stroke engines-petrol and diesel engines-air intake system, exhaust system, fuel supply system, ignition system, lubrication system, cooling system and engine starting system-Performance of I.C. engines, advantage of MPFI and CRDI over conventional system. Refrigeration: Unit of refrigeration, COP, Block diagram and general descriptions of air refrigeration system, vapour compression and vapour absorption systems- Required properties of a refrigerant, important refrigerants– Domestic refrigerator- Ice plant. Air conditioning system: Concept of Air conditioning, psychometry, psychometric properties, psychometric chart, psychometric processes, human comfort– winter and summer air conditioning systems, air conditioning application.
Power transmission elements: Belt Drive - velocity ratio of belt drive, length of belt, slip in belt- simple problems– Power transmitted– Ratio of tensions– Centrifugal tension Initial tension– Rope drive, chain drive and gear drive-Types of gear trains.
Power plants: General layout of hydraulic, diesel, thermal and nuclear power plants-nonconventional energy sources. Hydraulic turbines and pumps : Classifications of hydraulic turbines –types of hydraulic turbines – runaway speed, specific speed, draft tube, cavitations, selection of hydraulic turbines .Classification of pumps– positive displacement and rotodynamic pumps (description only)- applications Steam turbines: Classification of steam turbines, description of common types of steam turbines: Impulse and reaction, compounding methods.
Description of general purpose machines like lathe, shaping machines, drilling machines, grinding machines and milling machines, Basic concepts of CNC, DNC, CIM and CAD/CAM Manufacturing Processes: Moulding and casting, forging, rolling, welding- arc welding-gas welding.