15ME32T: Mechanics of Machines Mechanical 3rd Sem Syllabus for Diploma DTE Karnataka C15 Scheme

Mechanics of Machines detail DTE Kar Diploma syllabus for Mechanical Engineering (General) (ME), C15 scheme is extracted from DTE Karnataka official website and presented for diploma students. The course code (15ME32T), and for exam duration, Teaching Hr/week, Practical Hr/week, Total Marks, internal marks, theory marks, duration and credits do visit complete sem subjects post given below. The syllabus PDFs can be downloaded from official website.

For all other mechanical 3rd sem syllabus for diploma c15 scheme dte karnataka you can visit Mechanical 3rd Sem Syllabus for Diploma C15 Scheme DTE Karnataka Subjects. The detail syllabus for mechanics of machines is as follows.

Pre-requisites:

Knowledge of basic mathematics and Applied Science, Engineering Graphics

Course Objectives:

1. To provide basic concept of kinematics and kinetics of machine elements.
2. To study basics of power transmission.
3. To study the effect of friction.
4. To Study the essentiality of balancing.
5. To acquaint with working principles of CAM Mechanism.
6. To study the different types of vibration and to understand critical speed of shaft

Course Outcomes:

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UNIT I: BASIC KINEMATICS 10Hrs

Definition-Kinematic link or element-Types of links-Kinematic pair-Types-Types of constrained Motions- Kinematic chain- Definition of Machine, Structure and MechanismDifference between Machine and Structure ,Mechanism-Inversions-Types of Kinematic Chains-Four Bar Chain- Beam Engine-Coupling Rod of Locomotive-Single Slider Crank Chain- Pendulum Pump-Crank and Slotted Lever Quick Return Motion Mechanism-Double Slider Crank Chain-Elliptical trammel-Scotch yoke mechanism-Oldham’s coupling.

UNIT II: TRANSMISSION OF POWER 11Hrs

Belt Drives-types of flat belt drives-open, cross, idler pulley, compound, cone pulley and fast and loose pulley. Velocity Ratio, Slip and creep of belt, length of belt, Ratio of driving Tensions, Centrifugal Tension and Initial Tension-Power Transmitted by belts (Flat and V-Belt) and ropes- Maximum power transmitted by belt (without proof)-Problems on belt drives-Introduction to Gears – Classification of Gears-Spur Gear Terminology-Problems on
gears -(centre distance only) Introduction to Gear Trains-Types of Gear trains -Simple, Compound, Reverted and Epicyclicgear trains- Problems on Gear Trains

UNIT III: FRICTION 10Hrs

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UNIT IV:BALANCING 07 Hrs

Introduction-Static and Dynamic balancing-Balancing of single rotating massby a single mass rotating in the same plane -Balancing of several masses rotating in the same plane-Problems on above (Analytical and Graphical methods).

UNIT V: CAM MECHANISAMS 10Hrs

Cams-Introduction-Classification of followers and cams-Terminology of cam- Displacement diagram for the following Motion of follower-Uniform velocity -Simple Harmonic Motion (SHM)-Uniform Acceleration and Retardation Motion (UARM),Cam profile construction for Knife edge follower and Roller follower.

UNIT VI: MECHANICAL VIBRATIONS 04Hrs

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Text Books:

1. Rattan.S.S, “Theory of Machines”, Tata McGraw -Hill Publishers, New Delhi, 2009.
2. Khurmi R S, Guptha J.K “Theory of machines “, 5 Edition, S.Chand and company ,Delhi ISBN 81-219-2524-X

Reference Books:

1. Thomas Bevan, “Theory of Machines”, CBS Publishers and Distributors, 3rd Edition, 2005.
2. Ramamurti,V., “Mechanism and Machine Theory”,2nd Edition, Narosa Publishing House,2005.
3. Ghosh.A and A.K.Mallick, “Theory of Mechanisms and Machines”, Affiliated East- WestPrivate Limited, New Delhi, 1998.
4. Rao.J.S and Dukkipati R.V, “Mechanism and Machine Theory”,Wiley-Eastern Limited,New Delhi, 1992.

LIST OF SOFTWARES/ LEARNING WEBSITES:

1. http://nptel.iitm.ac.in/video.php?subjectId=112104121
2. http://www.technologystudent.com/gears1/gears7.htm
3. http://kmoddl.library.cornell.edu/model.php?m=20http://www3.ul.ie/~kirwanp/whatisaca mandfollowersyste.htm
4. http://nptel.iitm.ac.in/courses/Webcourse-contents/IIT-Delhi/Kinematics%20of%20Machine/index.htm
5. http://elearning.vtu.ac.in/12/enotes/Des Mac-Ele2/Unit6-RK.pdf
6. www.tecquipment.com/Theory_of_Machines.aspx
7. www.researchgate.net/../0094-114X_Mechanism_and_Machine_Theory
8. www.journals.elsevier.com/mechanism-and-machine-theory/
9. www.iftomm.org/
10. www.wiziq.com/online-tests/44047-mechanical-theory-of-machine
11. www.cs.ubc.ca/~murphyk/Teaching/CS340-Fall07/infoTheory.pdf

Suggested List of Student Activities:

Note: the following activities or similar activities for assessing CIE (IA) for 5 marks (Any one)

• Each student should do any one of the following type activity or similar activity related to the course and before take up, get it approved from concerned Teacher and HOD.
• Each student should conduct different activity and no repeating should occur
1. List the mechanisms which you are using in your day to day life. Sketch any three from these. Study and submit handwritten report of 500 words
2. Take a photo of a actual kinematic mechanism used in an automobile, study and submit handwritten report of 500 words
3. Analyse the effect of friction in real situation and submit handwritten report of 500 words
4. List the mechanism used in a typical car. study and submit handwritten report of 500 words
5. Identify and measure the dimensions of Flywheel used in automobile. study and submit handwritten report of 500 words
6. Identify the type of clutches and cams used in different automobiles and also the type of brakes in automobile and bicycle. study and submit handwritten report of 500 words
7. Visit the market and collect the data of items which are used in any mechanisms. Data includes specifications, cost, applications, etc. Also name the mechanism/s in which such item/s is/are use .Study and submit handwritten report of 500 words

Course Delivery:

• The course will be delivered through lectures and Power point presentations/ Video
• Teachers can prepare or download PPT of different topics on Mechanisms usage in mechanical engineering application.
• Motivate student to take case study on kinematics, power transmission and to inculcate him forself and continuous learning.

Model Question Paper:

(CIE)

1. Explain lower pair and higher pairs
2. List the different types of constraint motion Explain any one.
3. A shaft rotating at 200 r.p.m. drives another shaft at 300 r.p.m. and transmits 6 kW through a belt. The belt is 100 mm wide and 10 mm thick. The distance between the shafts is 4m.The smaller pulley is 0.5 m in diameter. Calculate the stress in the belt, if it is an open belt drive, Take p = 0.3. OR Two parallel shafts are to be connected by spur gearing. The approximate distance between the shafts is 600 mm. If one shaft runs at 120 r.p.m. and the other at 360 r.p.m., Calculate the number of teeth on each wheel, if the module is 8 mm. Also determine the exact distance apart of the shafts.

Model Question Paper:

PART-A 6×5=30 marks

1. List the different types of constraint motion Explain any one.
2. Explain with a neat sketch bull engine.
3. Explain open belt and cross belt drives.
4. Calculate the power transmitted by a belt running over a pulley of 600 mm diameter at 200 r.p.m. The coefficient of friction between the belt and the pulley is 0.25, angle of lap is 160° and maximum tension in the belt is 2500 N.
5. State the laws of solid friction.
6. Explain the method of balancing of different masses revolving in the same plane.
7. Explain clearly the terms ‘static balancing’ and ‘dynamic balancing’.
8. Construct the displacement and velocity diagram for uniform velocity motion of the follower.
9. Discuss briefly with neat sketches the longitudinal, transverse vibrations

PART-B 7×10=70 marks

1. Explain with a neat sketch beam engine. 06
2. Differentiate between machine and a structure. 04
1. Explain With a neat sketch double crank mechanism. 05
2. Sketch and describe Scotch-yoke mechanism. 05
1. List the advantages & disadvantages of flat belt over v-belt drive. 04
2. Develop the gear when Two parallel shafts, about 600 mm apart are to be connected by spur gears.

One shaft is to runat360r.p.m. and the other at 120 r.p.m., if the circular pitch isto be 25 mm. 06

4. Calculate the width of the belt taking centrifugal tension into account.A leather belt is required to transmit 7.5 kW from a pulley 1.2 m in diameter, running at 250 r.p.m. The angle embraced is 165° and the coefficient of friction between the belt and the pulley is 0.3. If the safe working stress for the leather belt is 1.5 MPa, density of leather 1 Mg/m3and thickness of belt 110 mm, 10
1. Explain with a neat sketch, limiting angle of friction. 05
2. A 60 mm diameter shaft running in a bearing carries a load of 2000 N. If the coefficient of friction between the shaft and bearing is 0.03, Calculate the power transmitted when it runs at 1440 r.p.m.
6. Five masses A, B, C,D and E are attached to a shaft and revolve in the same plane. The masses of A is
7. The angular position of the masses B, C , D and E are 60°, 135°, 2100 and 270° from the mass A. Calculate the magnitude of D and E for complete balance. Solve graphically -10
8. Four masses m1, m2, m3 and m4 are 200 kg, 300 kg, 240 kg and 260 kg respectively. The corresponding radii of rotation are 0.2 m, 0.15 m, 0.25 m and 0.3 m respectively and the angles between successive masses are 45°, 75° and 135°. Calculate the position and magnitude of the balance mass required, if its radius of rotation is 0.2m.(solve Analytically). -10
9. Construct a cam profile to raise a valve with simple harmonic motion through 50 mm in 1/3 of a revolution, keep if fully raised through 1/12 revolution and to lower it with harmonic motion in 1/6 revolution. The valve remains closed during the rest of the revolution. The diameter of the roller is 20 mm and the minimum radius of the cam is 25 mm. The diameter of the camshaft is 25 mm. The axis of the valve rod passes through the axis of the camshaft. -10
10. Define the following terms. -10
1. Base circle,
2. Pitch circle,
3. Pressure angle, and
4. Stroke of the follower.
5. Trace point
1. Explain the term ‘whirling speed’ or ‘critical speed’ of a shaft 05
2. Discuss briefly with neat sketches the transverse and torsional free vibrations 05

For detail syllabus of all other subjects of BE Mechanical, C15 scheme do visit Mechanical 3rd Sem syllabus for C15 scheme.

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