Sub Code : 10AU43
IA Marks : 25
Exam Marks: 100
Unit 1: Combustion thermodynamics:
Theoritical (Stoichiometeric) air for combustion of fuels. Excess air, mass balance, actual combustion. Exhaust gas analysis. A./ F ratio, Energy balance for a chemical reaction, enthalpy of formation, enthalpy and internal energy of combustion, Combustion efficiency
Unit 2: I.C.Engine:
Testing of two stroke and four stroke SI and CI engines for performance Related numerical problems, heat balance , Morse test. 06 Hours
Gas power cycle:Air Standard cycles: Carnot, Otto, Diesel, Dual and Stirling cycles,P-V and T-S
diagrams, description, efficiencies and mean effective pressures, Comparision of Otto and Diesel cycles.
Unit 4: Vapour Power Cycles:
Carnot vapour power cycles, drawbacks as a reference cycle, Simple Rankine cycle, description, T- S diagram, analysis for performance , comparision of Carnot and Rankine cycles. Effects of pressure and temperature on Rankine cycle performance. Actual vapour power cycles. Ideal and practical regenerative Rankine cycle, open and closed feed water heaters, Reheat Rankine cycle.
Unit 5: Reciprocating Compressors:
Operation of a single stage reciprocating compressors, work input through P-V diagram and steady state steady flow analysis. Effect of clearance and volumetric efficiency. Adiabatic, isothermal and mechanical efficiencies. Multistage compressor, saving in work, optimum intermediate pressure, inter- cooling, minimum work for compression.
Unit 6: Gas turbine and Jet propulsion:
Classification of Gas turbines, Analysis of open cycle gas turbine cycle. Advantages and disadvantages of closed cycle. Methods to improve thermal efficiency, Jet propulsion and Rocket propulsion.
Unit 7 Refrigeration:
Vapour compression refrigeration system ; description, analysis, refrigerating effect, capacity , power required, units of refrigeration, COP , Refrigerants and their desirable properties. Air cycle refrigeration; reversed Carnot cycle, reversed Brayton cycle, Vapour absorption refrigeration system, steam jet refrigeration.
Unit 8 Psychrometry:
Atmospheric air and psychrometric properties; Dry bulb temperature, wet bulb temperature, dew point temperature; partial pressures, specific and relative humidifies and the relation between the two enthalpy and adiapatic saturation temperature. Construction and use of psychrometric chart . Analysis of various processes; heating, cooling , dehumidifying and humidifying. Adiabatic mixing of moist air. Summer and winter air conditioning.
1. Thermodynamics data hand book, B.T.Nijaguna (to be supplied in the examination)
2. A copy of Psychrometry chart to be given along with answer book to the candidates (if needed)
- 1. Basic and applied Thermodynamics, P.K. Nag, Tata Mc Graw Hill Pub.Co,2002
- 2. Applied Thermodynamics, Rajput, Laxmi Publication
- 3. Applied Thermodynamics, B.K. Venkahna, PHI, New Delhi
- 1. Thermodynamics , An engineering approach, Yunus, A. Cenegal and Michael A.Boies, Tata Me Graw Hill pub. Co., 2002,
- 2. Fundamental of Classical Thermodynamics, G.J. Van Wylen and R.E. Sontang Wiley eastern.
- 3. “Applied Thermodynamics”, B.K Venkanna, PHI New Delhi
ENGINEERING MATHEMATICS – IV
Sub Code : 10MAT41
IA Marks : 25
Exam Marks : 100
KINEMATICS OF MACHINES
Sub Code : 10AU44
IA Marks : 25
Exam Marks : 100
PART – A
UNIT 1: Introduction:
Definitions Link or element, kinematic pairs, Degrees of freedom, Grubler’s criterion (without derivation), Kinematic chain, Mechanism, Structure, Mobility of Mechanism, Inversion, Machine. Kinematic Chains and Inversions: Inversions of Four bar chain; Single slider crank chain and Double
slider crank chain.
UNIT 2: Mechanisms:
Quick return motion mechanisms-Drag link mechanism, Whitworth mechanism and Crank and slotted lever Mechanism. Straight line motion mechanisms Peaucellier’s mechanism and Robert’s mechanism. Intermittent Motion mechanisms -Geneva wheel mechanism and Ratchet and Pawl mechanism. Toggle mechanism, Pantograph, Ackerman steering gear mechanism.
UNIT 3: Velocity and Acceleration Analysis of Mechanisms (Graphical Methods)
Velocity and acceleration analysis of Four Bar mechanism, slider crank mechanism and Simple Mechanisms by vector polygons: Relative velocity and acceleration of particles .in a common link, relative velocity and accelerations of coincident Particles on separate links- Coriolis component of acceleration. Angular velocity and angular acceleration of links, velocity of rubbing.
Velocity Analysis by Instantaneous Center Method: Definition, Kennedy’s Theorem, Determination of linear and angular velocity using instantaneous center method Klein’s Construction: Analysis of velocity and acceleration of single slider crank mechanism.
PART – B
UNIT 5: Velocity and Acceleration Analysis of Mechanisms (Analytical Methods):
Analysis of four bar chain and slider crank chain using analytical expressions. (Use of complex algebra and vector algebra)
UNIT 6: Spur Gears:
Gear terminology, law of gearing, Characteristics of involute action, Path of contact. Arc of contact, Contact ratio of spur, helical, bevel and worm gears, Interference in involute gears. Methods of avoiding interference, Back lash. Comparison of involute and cycloidal teeth. Profile Modification.
UNIT 7: Gear Trains:
Simple gear trains, Compound gear trains for large speed. reduction, Epicyclic gear trains, Algebraic and tabular methods of finding velocity ratio of epicyclic gear trains. Tooth load and torque calculations in epicyclic gear trains.
UNIT 8: Cams:
Types of cams, Types of followers. Displacement, Velocity and, Acceleration time curves for cam profiles. Disc cam with reciprocating follower having knife-edge, roller and flat-face follower, Disc cam with oscillating roller follower. Follower motions including SHM, Uniform velocity, uniform acceleration and retardation and Cycloidal motion.
- 1. “Theory of Machines”, Rattan S.S, Tata McGraw-Hill Publishing Company Ltd., New Delhi, and 3rd edition -2009.
- 2. “Theory of Machines”, Sadhu Singh, Pearson Education (Singapore) Pvt. Ltd, Indian Branch New Delhi, 2nd Edi. 2006
- 1. “Theory of Machines & Mechanisms”, J.J. Uicker, , G.R. Pennock, J.E. Shigley. OXFORD 3rd Ed. 2009.
- 2. Mechanism and Machine theory, Ambakar, PHI
Graphical Solutions may be obtained either on the Graph Sheets or on the Answer Book itself.
MANUFACTURING PROCESS – II
Sub Code : 06 AU 45
IA Marks : 25
Exam Marks : 100
PART – A
UNIT – 1 Theory of Metal Cutting:
Single point cutting tool nomenclature, geometry. Mechanics of Chip Formation,Types of Chips. Merchants circle diagram and analysis, Ernst Merchant’s solution, shear angle relationship, problems of Merchant’s analysis. Tool Wear and Tool failure, tool life. Effects of cutting parameters on tool life. Tool Failure Criteria, Taylor’s Tool Life equation. Problems on tool life evaluation.
UNIT – 2 Cutting Tool Materials:
Desired properties and types of cutting tool materials – HSS, carbides coated carbides, ceramics. Cutting fluids. Desired properties, types and selection. Heat generation in metal cutting, factors affecting heat generation. Heat distribution in tool and workpiece and chip. Measurement of tool tip temperature.
UNIT – 3 Turning (Lathe), Shaping and Planing Machines:
Classification, constructional features of Turret and Capstan Lathe. Tool Layout, shaping Machine, Planing Machine, Driving mechanisms of lathe, shaping and planing machines, Different operations on lathe, shaping machine and planing machine. Simple problems on machinery time calculations
UNIT – 4 Drilling machines:
Classification, constructional features, drilling & related operations. Types of drill & drill bit nomenclature, drill materials.
Introduction to CNC machines- Principles of operation. Axes of NC machine-Coordinate systems. Basics of Manual part programming methods.
PART – B
UNIT – 5 Milling machines:
Classification, constructional features, milling cutters nomenclature, milling operations, up milling and down milling concepts. Various milling operations.
Indexing: Simple, compound, differential and angular indexing calculations. Simple problems on simple and compound indexing.
UNIT – 6 Grinding machines:
Types of abrasives,Grain size, bonding process, grade and structure of grinding wheels, grinding wheel types. Classification, constructional features of grinding machines (Centreless , cylindrical and surface grinding ). Selection of grinding wheel. Grinding process parameters. Dressiing and truing of grinding wheels.
UNIT – 7: Broaching process –
Principle of broaching. Details of a broach. Types of broaching machines-constructional details. Applications. Advantages and Limitations. Finishing and other Processes Laping and Honing operations – Principles, arrangement of set up and application. Super finishing process, polishing, buffing operation and application.
UNIT – 8 Non-traditional machining processes:
Need for non traditional machining, Principle, equipment & operation of Laser Beam, Plasma Arc Machining, Electro Chemical Machining, Ultrasonic Machining, Abrasive Jet Machining, Water Jet Machining, Electron Beam Machining, Electron Discharge Machining and Plasma Arc Machining.
- 1. Workshop Technology, Hazara Choudhry, Vol-II, Media Promoters & Publishers Pvt. Ltd. 2004
- 2. Production Technology, R.K.Jain, Khanna Publications, 2003.
- 3. Production Technology, HMT, Tata MacGraw Hill, 2001.
- 1. Manufacturing Science, Amitabha Ghosh and Mallik, affiliated East West Press, 2003.
- 2. Fundamentals of Metal Machining and Machine Tools, G. Boothroyd, McGraw Hill, 2000.