ELEMENTS OF MECHANICAL ENGINEERING
Semester : I/II CIE Marks’: 40
Course Code = 18ME15/25 SEE
Marks: 60
Teaching Hours/week (L:T:P) =:
2:2:0 Exam Hours’: 03 Credits : 03
Course Objectives:
This course (18ME15/25) will enable students to
CLO1 Learn the fundamental concepts of energy, its sources
and conversion.
CLO2 Comprehend the basic concepts of thermodynamics.
CLO3 Understand the concepts of boilers, turbines, pumps,
internal combustion engines and refrigeration
CLO4 Distinguish different metal joining techniques.
CLO5 Enumerate the knowledge of working with conventional
machine tools, their specifications.
MODULE-1
Sources of
Energy : Introduction and application of energy sources like fossil
fuels, hydel, solar, wind, nuclear fuels and bio-fuels; environmental issues
like global warming and ozone depletion.
Basic concepts of Thermodynamics: Introduction,
states, concept of work, heat, temperature; Zeroth, Ist, 2nd and 3rd laws of
thermodynamics. Concept of internal energy, enthalpy and entropy (simple
numericals).
Steam: Formation of steam and
thermodynamic properties of steam (simple numericals).
(RBT : L1, L2 & L3)
MODULE-II
Boilers:
Introduction to boilers, classification, Lancashire boiler, Babcock and Wilcox
boiler. Introduction to boiler mountings and accessories (no sketches).
Turbines:
Hydraulic Turbines — Classification and specification, Principles and operation
of Pelton wheel turbine, Francis turbine and Kaplan turbine (elementary
treatment only). Hydraulic Pumps:
Introduction, classification and specification of pumps, reciprocating pump and
centrifugal pump, concept of cavitation and priming.
(RBT: L1, L2 & L3)
MODULE - Ill
Internal
Combustion Engines Classification, I.C. Engines parts, 2 and 4 stroke
petrol and 4-stroke diesel engines. P-V diagrams of Otto and Diesel cycles.
Simple problems on indicated power, brake power, indicated thermal efficiency,
brake thermal efficiency, mechanical efficiency and specific fuel consumption.
@ Refrigeration and Air conditioning Refrigeration -
Definitions - Refrigerating effect, Ton of Refrigeration, Ice making capacity,
COP, relative COP, Unit of Refrigeration. Refrigerants, Properties of
refrigerants, List of commonly used refrigerants. Principle and working of
vapor compression refrigeration and vapor absorption refrigeration. Domestic
refrigerator. Principles and applications of air conditioners, window and split
air conditioners.
(RBT Levels : L1, L2 & L3)
MODULE IV
Properties,
Composition and Industrial Applications of engineering materials Metals —
Ferrous: cast iron, tool steels and stainless steels and nonferrous:
aluminum, brass, bronze. Polymers - Thermoplastics and thermosetting polymers.
Ceramics - Glass, optical fiber glass, cermets. Composites - Fiber reinforced
composites, Metal Matrix Composites Smart materials — Piezoelectric materials,
shape memory alloys, semiconductors and insulators.
Joining
Processes: Soldering, Brazing and Welding Definitions. Classification
and methods of soldering, brazing and welding. Brief description of arc
welding, oxy-acetylene welding, TIG welding, and MIG welding. Belt drives Open
& crossed belt drives, Definitions -slip, creep, velocity ratio,
derivations for length of belt in open and crossed belt drive, ratio of tension
in flat belt drives, advantages and disadvantages of V belts and timing belts,
simple numerical problems. Gear drives Types—spur, helical, bevel, worm and
rack and pinion. Velocity ratio, advantages and disadvantages over belt drives,
simple numerical problems on velocity ratio.
(RBT Levels : L1, L2 & L3)
MODULE-V
Lathe -
Principle of working of a center lathe. Parts of a lathe. Operations on lathe -
Turning, Facing, Knurling, Thread Cutting, Drilling, Taper turning by Tailstock
offset method and Compound slide swiveling method, Specification of Lathe.
Milling Machine - Principle of milling, types of milling machines. Working of
horizontal and vertical milling machines. Milling processes - plane milling,
end milling, slot milling, angular milling, form milling, straddle milling, and
gang milling. (Layout sketches of the above machines need not be dealt.
Sketches need to be used only for explaining the operations performed on the
machines)
1)
Introduction to Advanced Manufacturing Systems
Computer Numerical Control (CNC): Introduction, components of CNC, open loop
and closed loop systems, advantages of CNC, CNC Machining centers and Turning
centers. Robots: Robot anatomy, joints and links, common robot configurations.
Applications of Robots in material handling, processing and assembly and
inspection.
(RBT Levels : L1, L2 & L3)
Course Outcomes:
Upon completion of this course, students will be able to
Col Identify different sources of energy and their
conversion process.
CO2 Explain the working principle of hydraulic turbines,
pumps, IC engines and refrigeration.
CO3 Recognize various metal joining processes and power
transmission elements.
CO4 Understand the properties of common engineering
materials and their applications in engineering industry.
CO5 Discuss the working of conventional machine tools,
machining processes, tools and accessories.
CO6 Describe the advanced manufacturing systems.
Question paper
pattern:
The SEE question paper will be set for 100 marks and the
marks scored will be proportionately reduced to 60.
° The question paper will have ten full questions
carrying equal marks.
Each full question consisting of 20 marks.
. There will be two full questions (with a maximum of
three sub questions)
from each module.
Each full question will have sub question covering all the
topics under a
module.
° The students will have to answer five full questions,
selecting one full question from each module.
Note
° To illustrate the concepts of operations of turbines,
pumps, conventional machines like lathe, drilling, milling, grinding etc., the
instructions should be blended with video presentations and visit to the
laboratories/ machine shop concerned.
° Demonstration of soldering, brazing and welding should
be arranged in the workshop.
° To illustrate the fundamentals of CNC machining and
turning centers and robots, video presentations should be adapted in addition
to class room instructions.
. The boiler mountings and accessories should be shown in
the engine lab. Assignments should be submitted by students on materials,
sources of energy, global warming, welding processes, robots and their
applications. These assignments should be given due credit in awarding CIE
marks.
Click here to download previous year question paper
Click here to download the question bank
Textbooks:
2:
Elements of Mechanical Engineering, K. R.
Gopalakrishna, Subhas Publications, Bangalore, 2008.
Elements of Mechanical Engineering, Vol.-1 & 2, Hajra
Choudhury, Media Promoters, New Delhi, 2001.
A Text Book of Elements of Mechanical Engineering”, S.
Trymbaka Murthy, 3rd revised edition 2006, I .K. International Publishing House
Pvt. Ltd., New Delhi.
Reference Books:
2:
Elements of Mechanical Engineering, R.K. Rajput,
Firewall Media, 2005.
Elements of Mechanical Engineering, Dr. A. S. Ravindra,
Best Publications, 7th edition, 2009.
CAD/CAM/CIM, Dr. P Radhakrishnan, 3rd edition, New Age
International Publishers, New Delhi.
Introduction to Robotics: Mechanics And Control, Craig, J.
J., 2nd Ed.Addison-Wesley Publishing Company, Readong, MA, 1989. Introduction
to Engineering Materials”, B.K. Agrawal ,Tata McGraHill Publication, New Delhi.
Thermal Science and Engineering”, Dr. D.S. Kumar, S.K.
Kataria & sons Publication, New Delhi.
){kind=link}