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Syllabus of Diploma (RGPV), III Sem, Mechanical Engineering

Syllabus of Diploma (RGPV) Semester-III, Mechanical Engineering

 

 

​BASIC MECHANICAL ENGINEERING, PAPER CODE : 7401, SUBJECT CODE : 301

UNIT-I: Introduction to Thermodynamics

  • Role of Thermodynamics in Engineering and Science, Types of Systems,
  • Thermodynamic Equilibrium, Properties, State, Process and Cycle,
  • Elementary introduction to Zeroth, First and Second laws of thermodynamics,
  • Heat and Work Interactions for various non-flow and flow processes;
  • Concept of Heat Engine, Heat Pump & Refrigerator, Efficiency/ COP;
  • Kelvin-Planck and Clausius Statements, Carnot Cycle, Carnot Efficiency, T-S and P-V Diagrams,
  • Concept of Entropy (Definition only).

Unit-II: Heat transfer & Thermal Power Plant

  • Modes of Heat Transfer;
  • Conduction: Composite Walls and Cylinders, Combined Conduction and Convection
  • Overall Heat Transfer Co-efficient,
  • Simple Numerical Problems: Thermal Power Plant Layout;
  • Rankine Cycle;
  • Fire Tube and Water Tube boilers, Babcock & Wilcox, Cochran Boilers;

Unit-III: Steam Turbines

  • Impulse and Reaction Turbines;
  • Condensers: Jet & Surface Condensers, Cooling Towers;
  • Internal Combustion Engines and Refrigeration: Otto, Diesel and Dual cycles; P-V and T-S Diagrams;
  • IC Engines: 2 – Stroke and 4 – Stroke I.C. Engines, S.I. and C.I. Engines.

Unit-IV: Materials and Manufacturing Processes

  • Engineering Materials, Classification and their Properties;
  • Metal Casting, Moulding, Patterns,
  • Metal Working: Hot Working and Cold Working,
  • Metal Forming: Extrusion, Forging, Rolling, Drawing, Gas Welding, Arc Welding, Soldering, and Brazing.

Unit-V: Machine Tools and Machining Processes

  • Machine Tools: Lathe Machine and types, Lathe Operations,
  • Milling Machine and types, Milling Operations,
  • Shaper and Planer Machines: Differences, Quick-Return Motion Mechanism,
  • Drilling Machine: Operations,
  • Grinding Machine: Operations

 

FLUID MECHANICS AND HYDRAULIC MACHINERY, PAPER CODE : 7402, SUBJECT CODE : 302

UNIT-I: Properties of fluid

  • Density, Specific gravity, Specific Weight, Specific Volume, Dynamic Viscosity, Kinematic Viscosity, Surface tension, Capillarity, Vapour Pressure, Compressibility.
  • Fluid Pressure & Pressure Measurement: Fluid pressure, Pressure head, Pressure intensity,
  • Concept of vacuum and gauge pressures, atmospheric pressure, absolute pressure,
  • Simple and differential manometers, Bourdan pressure gauge,
  • Concept of Total pressure on immersed bodies, center of pressure, Simple problems on Manometers.

Unit-II: Fluid Flow

  • Types of fluid flows, Path line and Stream line, Continuity equation, Bernoulli’s theorem,
  • Principle of operation of Venturimeter, Orifice meter and Pitot tube,
  • Derivations for discharge, coefficient of discharge and numerical problems.
  • Flow Through Pipes: Laminar and turbulent flows;
  • Darcy’s equation and Chezy’s equation for frictional losses,
  • Minor losses in pipes, Hydraulic gradient and total gradient line,
  • Numerical problems to estimate major and minor losses

Unit-III: Impact of jets

  • Impact of jet on fixed vertical, moving vertical flat plates,
  • Impact of jet on curved vanes with special reference to turbines & pumps,
  • Simple Numericals on work done and efficiency.

Unit-IV: Hydraulic Turbines

  • Layout of hydroelectric power plant, Features of Hydroelectric power plant,
  • Classification of hydraulic turbines, Selection of turbine on the basis of head and discharge available,
  • Construction and working principle of Pelton wheel, Francis and Kaplan turbines,
  • Draft tubes – types and construction,
  • Concept of cavitation in turbines,
  • Calculation of Work done, Power, efficiency of turbines, Unit quantities and simple numericals.

Unit-V: Centrifugal Pumps

  • Principle of working and applications,
  • Types of casings and impellers, Concept of multistage,
  • Priming and its methods, Cavitation, Manometric head, Work done,
  • Manometric efficiency, Overall efficiency.
  • Numericals on calculations of overall efficiency and power required to drive pumps.
  • Reciprocating Pumps: Construction, working principle and applications of single and double acting reciprocating pumps,
  • Concept of Slip, Negative slip, Cavitation and separation.

 

MATERIAL SCIENCE AND ENGINEERING, PAPER CODE : 7403, SUBJECT CODE : 303

UNIT-I: Crystal structures and Bonds

  • Unit cell and space lattice:
  • Crystal system: The seven basic crystal systems;
  • Crystal structure for metallic elements: BCC, FCC and HCP;
  • Coordination number for Simple Cubic, BCC and FCC;
  • Atomic radius: definition, atomic radius for Simple Cubic, BCC and FCC;
  • Atomic Packing Factor for Simple Cubic, BCC, FCC and HCP;
  • Simple problems on finding number of atoms for a unit cell.
  • Bonds in solids: Classification – primary or chemical bond, secondary or molecular bond;
  • Types of primary bonds: Ionic, Covalent and Metallic Bonds;
  • Types of secondary bonds: Dispersion bond, Dipole bond and Hydrogen bond.

Unit-II: Phase diagrams, Ferrous metals and its Alloys

  • Isomorphs, eutectic and eutectoid systems;
  • Iron-Carbon binary diagram; Iron and Carbon Steels;
  • flow sheet for production of iron and steel;
  • Iron ores – Pig iron: classification, composition and effects of impurities on iron;
  • Cast Iron: classification, composition, properties and uses;
  • Wrought Iron: properties, uses/applications of wrought Iron; comparison of cast iron, wrought iron and mild steel and high carbon steel;
  • standard commercial grades of steel as per BIS and AISI;
  • Alloy Steels – purpose of alloying; effects of alloying elements – Important alloy steels:
  • Silicon steel, High Speed Steel (HSS), heat resisting steel, spring steel,
  • Stainless Steel (SS): types of SS, applications of SS – magnet steel – composition, properties and uses

Unit-III: Non-ferrous metals and its Alloys

  • Properties and uses of aluminium, copper, tin, lead, zinc, magnesium and nickel;
  • Copper alloys: Brasses, bronzes – composition, properties and uses;
  • Aluminium alloys: Duralumin, hindalium, magnelium – composition, properties and uses;
  • Nickel alloys: Inconel, monel, nicPerome – composition, properties and uses.
  • Anti-friction/Bearing alloys: Various types of bearing bronzes – Standard commercial grades as per BIS/ASME.

Unit-IV: Failure analysis & Testing of Materials

  • Introduction to failure analysis;
  • Fracture: ductile fracture, brittle fracture; cleavage; notch sensitivity;
  • fatigue; endurance limit; characteristics of fatigue fracture;
  • variables affecting fatigue life; creep; creep curve; creep fracture;
  • Destructive testing: Tensile testing; compression testing;
  • Hardness testing: Brinell, Rockwell; bend test; torsion test; fatigue test; creep test.
  • Non-destructive testing: Visual Inspection; magnetic particle inspection; liquid penetrant test; ultrasonic inspection; radiography

Unit-V: Corrosion & Surface Engineering

  • Nature of corrosion and its causes; Electrochemical reactions; Electrolytes;
  • Factors affecting corrosion: Environment, Material properties and physical conditions;
  • Types of corrosion; Corrosion control: Material selection, environment control and design;
  • Surface engineering processes: Coatings and surface treatments; Cleaning and mechanical finishing of surfaces; Organic coatings;
  • Electroplating and Special metallic plating;
  • Electro polishing and photo-etching ;– Conversion coatings: Oxide, phosphate and chromate coatings;
  • Thin film coatings: PVD and CVD; Surface analysis;
  • Hard-facing, thermal spraying and high-energy processes; Process/material selection.
  • Pollution norms for treating effluents as per standards.

 

 

MANUFACTURING ENGINEERING, PAPER CODE : 7404 SUBJECT CODE : 304 

UNIT-I: Cutting Fluids & Lubricants

  • Introduction; Types of cutting fluids, Fluids and coolants required in turning, drilling, shaping, sawing & broaching;
  • Selection of cutting fluids, methods of application of cutting fluid;
  • Classification of lubricants (solid, liquid, gaseous), Properties and applications of lubricants.
  • Lathe Operations: Types of lathes – light duty, Medium duty and heavy duty geared lathe, CNC lathe;
  • Specifications; Basic parts and their functions;
  • Operations and tools – Turning, parting off, Knurling, facing, Boring, drilling, threading, step turning, taper turning.

Unit-II: Broaching Machines

  • Introduction to broaching;
  • Types of broaching machines – Horizontal type (Single ram & duplex ram), Vertical type, Pull up, pull down, and push down;
  • Elements of broach tool; broach teeth details; Nomenclature; Tool materials.
  • Drilling: Classification; Basic parts and their functions; Radial drilling machine; Types of operations;
  • Specifications of drilling machine; Types of drills and reamers.

Unit-III: Welding

  • Classification; Gas welding techniques; Types of welding flames;
  • Arc Welding – Principle, Equipment, Applications; Shielded metal arc welding; Submerged arc welding;
  • TIG / MIG welding; Resistance welding – Spot welding, Seam welding, Projection welding; Welding defects;
  • Brazing and soldering: Types, Principles, Applications.
  • Milling: Introduction; Types of milling machines: plain, Universal, vertical; constructional details – specifications;
  • Milling operations: simple, compound and differential indexing; Milling cutters – types;
  • Nomenclature of teeth; Teeth materials; Tool signature of milling cutter; Tool & work holding devices.

Unit-IV: Gear Making

  • Manufacture of gears – by Casting, Moulding, Stamping, Coining Extruding, Rolling, Machining;
  • Gear generating methods: Gear Shaping with pinion cutter & rack cutter; Gear hobbing; Description of gear hob;
  • Operation of gear hobbing machine; Gear finishing processes; Gear materials and specification;
  • Heat treatment processes applied to gears.
  • Press working: Types of presses and Specifications,
  • Press working operations – Cutting, bending, drawing, punching, blanking, notching, lancing;
  • Die set components- punch and die shoe, guide pin, bolster plate, stripper, stock guide, feed stock, pilot;
  • Punch and die clearances for blanking and piercing, effect of clearance.

Unit-V: Grinding and finishing processes

  • Principles of metal removal by Grinding;
  • Abrasives – Natural & Artificial; Bonds and binding processes: Vitrified, silicate, shellac, rubber, bakelite;
  • Factors affecting the selection of grind wheels: size and shape of wheel, kind of abrasive, grain size, grade and strength of bond, structure of grain, spacing, kinds of bind material;
  • Standard marking systems: Meaning of letters & numbers sequence of marking,
  • Grades of letters; Grinding machines classification: Cylindrical, Surface, Tool & Cutter grinding machines;
  • Construction details; Principle of centreless grinding; Advantages & limitations of centre less grinding;
  • Finishing by grinding: Honing, Lapping, Super finishing; Electroplating: Basic principles, Plating metals, applications;
  • Hot dipping: Galvanizing, Tin coating, Parkerising, Anodizing; Metal spraying: wire process, powder process and applications;
  • Organic coatings: Oil base Paint, Lacquer base, Enamels, Bituminous paints, rubber base coating; Finishing specifications.

 

THERMAL ENGINEERING-I, PAPER CODE : 7405, SUBJECT CODE : 305

UNIT-I: Sources of Energy

  • Brief description of energy Sources: Classification of energy sources – Renewable,
  • Non-Renewable; Fossil fuels, including CNG,
  • LPG; Solar Energy: Flat plate and concentrating collectors & its applications (Solar Water Heater, Photovoltaic Cell, Solar Distillation);
  • Wind Energy; Tidal Energy; Ocean Thermal Energy; Geothermal Energy; Biogas, Biomass, Bio-diesel; Hydraulic Energy, Nuclear Energy; Fuel cell.

Unit-II: Internal Combustion Engines

  • Assumptions made in air standard cycle analysis; Brief description of Carnot, Otto and Diesel cycles with P-V and T-S diagrams;
  • Internal and external combustion engines; advantages of I.C. engines over external combustion engines; classification of I.C. engines; neat sketch of I.C. engine indicating component parts;
  • Function of each part and materials used for the component parts – Cylinder, crank case, crank pin, crank, crank shaft, connecting rod, wrist pin, piston, cooling pins cylinder heads, exhaust valve, inlet valve;
  • Working of four-stroke and two-stroke petrol and diesel engines; Comparison of two stroke and four stroke engines;
  • Comparison of C.I. and S.I. engines;
  • Valve timing and port timing diagrams for four stroke and two stroke engines.

Unit-III: I.C. Engine Systems

  • Fuel system of Petrol engines; Principle of operation of simple and Zenith carburettors;
  • Fuel system of Diesel engines; Types of injectors and fuel pumps;
  • Cooling system – air cooling, water cooling system with thermo siphon method of circulation and water cooling system with radiator and forced circulation (description with line diagram).
  • Comparison of air cooling and water cooling system;
  • Ignition systems – Battery coil ignition and magneto ignition (description and working).
  • Comparison of two systems; Types of lubricating systems used in I.C. engines with line diagram;
  • Types of governing of I.C. engines – hit and miss method, quantitative method, qualitative method and combination methods of governing;
  • their applications; Objective of super charging.

Unit-IV: Performance of I.C. Engines

  • Brake power; Indicated power; Frictional power; Brake and Indicated mean effective pressures;
  • Brake and Indicated thermal efficiencies; Mechanical efficiency; Relative efficiency;
  • Performance test; Morse test; Heat balance sheet;
  • Methods of determination of B,P., I.P. and F.P.;
  • Simple numerical problems on performance of I.C. engines.

Unit-V: Air Compressors

  • Functions of air compressor; Uses of compressed air; Types of air compressors;
  • Single stage reciprocating air compressor – its construction and working (with line diagram) using P-V diagram;
  • Multi stage compressors – Advantages over single stage compressors;
  • Rotary compressors: Centrifugal compressor, axial flow type compressor and vane type compressors.
  • Refrigeration & Air-conditioning: Refrigeration; Refrigerant; COP; Air Refrigeration system: components, working & applications;
  • Vapour Compression system: components, working & applications;
  • Air conditioning; Classification of Air-conditioning systems; Comfort and Industrial Air-Conditioning; Window Air-Conditioner;
  • Summer Air-Conditioning system, Winter Air-Conditioning system, Year-round Air-Conditioning system.

 

COMPUTER AIDED MACHINE DRAWING PRACTICE, PAPER CODE : –, SUBJECT CODE : —

UNIT-I: Introduction to CAD software.

 UNIT-II: Drawing aids and editing commands.

 UNIT-III: Basic dimensioning, hatching, blocks and views.

 UNIT-IV: Isometric drawing, printing and plotting

UNIT-V: Machine Drawing practice using Auto CAD: Detailed drawings of following machine parts are to be given to the students to assemble and draw the sectional or plain elevations, plans and side views with dimensioning and bill of materials using cad software (12 exrcises).

1) Sleeve & Cotter Joint

2) Spigot & Cotter Joint

3) Knuckle Joint

4) Stuffing Box

5) Screw Jack

6) Foot Step Bearing

7) Universal Coupling

8) Plummer Block

9) Simple Eccentric

10) Machine Vice

11) Connecting Rod

12) Protected Type Flanged Coupling.

 

 

PROFESSIONAL DEVELOPMENT, PAPER CODE : –, COURSE CODE : — 

Unit – I: Professional and Social Ethics

  • Professional ethics, its need and importance, general code of ethics for engineers, ethical issues for engineers.
  • Need and importance of social skills, social skills for better group performance,
  • important social skills such as social perceptiveness, coordination, negotiation, persuasion etc.

Unit – II: Lifelong learning and Self-directed Learning

  • Lifelong learning, its examples, self-directed learning, its examples, important steps in lifelong learning.
  • Need for planning self-directed learning, planning self-directed learning plan, examples.

Unit – III: Career Planning

  • Importance of career planning, major career opportunities in concerned branch of engineering ,
  • study of the important career opportunities regarding qualification,
  • knowledge, skills, experience required for them, role of personal factors like personal life style, interest areas, desires, personal preferences in career planning.
  • Identification and detailing of important career opportunities in relation to branch of diploma,
  • identification and detailing of important self-personal factors and self-personal preferences, development of self-career plan.

Unit – IV: Industrial Visits

  • Necessity of exposure to environment and practices, lectures by industry experts.
  • Importance of Students’ industrial visits, learning through observing real life industrial systems, planning and organizing the industrial visits.

Unit – V: CV, Resume, Bio-data and Interview

  • Need of presenting self for employment, salient features and formats of bio-data, CV, resume, comparison of the three for their merits, limitations and specific uses,
  • study of cases and examples of bio-data, CV, resume and covering letter by all students for self of for the given cases.
  • Importance of employment related interviews, purpose of interview, dress code, body language and posture of interviewee,
  • do’s and don’ts for interviews, interview checklist,
  • practice of facing employment related interviews for all students.

Unit – VI: Group Discussion

  • Need and importance of group discussion in professional work,
  • ideal group discussion and skills needed to effectively participate in group discussion,
  • practice of group discussion skills.

==End of Syllabus==

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