March 14, 2010

ME 04 602—MACHINE DESIGN 2008 Calicut University


2008 Calicut University Mechanical Engineering SIXTH SEMESTER B.TECH. (ENGINEERING) DEGREE EXAMINATION Question paper
SIXTH SEMESTER B.TECH. (ENGINEERING) DEGREE EXAMINATION
JUNE 2008
ME 04 602—MACHINE DESIGN (2004 Admissions)

Time : Three Hours Maximum : 100 Marks

Use of design data book is permitted. Any missing data may be assumed suitably by giving proper justification.


1.Part A: (8*5=40 marks)
I. 1- State the use of preferred numbers.
2 What will happen if deformation takes place in gear profiles due to excessive contact stress? 3 Give specifications of Parallel key.
4 Under what circumstances, hollow riveted joints are used?
5 What are the advantages of welded joint over riveted joints?
6 Why leaf springs are made in layers instead of a single plate?
7. Differentiate between shaft and axle.
8. Sketch a flange coupling and mark its major dimensions.

Part B:(4*15=60 marks)
II. (a) A steel member is subjected to 3-dimensional stress system and the resulting principal stresses are 120 N/mm2 tension, 80 N/mm2 and 40 N/mm2 compression. If the proportional limit of the material in simple tension is 280 N/mm2 and its Poisson ratio is 0.3; Determine factor of safety according to (a) maximum principal stress theory; (b) maximum principal strain theory ;(c) maximum shear stress theory.
Or
(b) The resulting principal stresses on a C 15 steel member when subjected to a 3-dimensional stress system are 100 N/mm2 in tension 60 N/mm2 and 20 N/mm2 in compression. Determine the factor of safety according to
(a) maximum principal stress theory.
(b) Maximum shear stress theory.
Assume proportional stress limit of the material in tension and Poisson's ratio.

III. (a) Design a cotter joint to transmit an axial force of 120 kN. Material to be used is C 40. A factor of safety of 2 may be taken at yield point.
Or
(b) Design and prepare working drawings of triple riveted butt joint suitable for longitudinal seam and a double riveted lap joint for the circumferential seam of Lancashire boiler of 2.5 m diameter. Maximum working pressure is 100 N/cm2. Working stresses are 90 N/mm2 for plates in tension, 70 N/mm2 for rivets in shear, 120 N/mm2 for rivets / plates in crushing. Indicate how you will make joints seam tight after riveting.

IV. (a) A 65 mm diameter solid shaft is to be welded to a flat plate by a fillet weld around the circumference of the shaft. Determine the size of the weld if the torque on the shaft is 3 kN-m. The allowable shear stress in the weld is 70 N/mm2.
Or
(b) Design a close coiled helical compression spring for a service load ranging from 3000 N to 4000 N, The axial deflection of the spring for the load range is 10mm. Take spring index as 6. Permissible shear stress is 42 kN/m2 and G = 0.84 x 107 N/cm2. Draw a fully dimensioned sketch.


V.(a) A hollow shaft is used to transmit 15 kW at 250 r.p.m. The loading is such that the maximum bending moment is 150 kN-cm, maximum Torsional moment is 50 kN-cm and the axial compressive load is 20 kN. The shaft is supported on rigid bearings 150 cm apart and is subjected to minor shock load. The maximum allowable stress = 2 kN/cm2. The inside diameter is 0.75 times the outside diameter. Calculate the diameter of the shaft.
Or

(b) A bushed pin type flexible coupling (flange coupling) is required to transmit 10 kW at 1440 r.p.m. of the shaft speed. The diameters of the shafts to be connected are 40 mm. Select suitable dimensions of the coupling and check for the safety. Shafts are made of Cl5 steel.


FEEL USEFUL PLEASE GIVE +1

0 comments :

Post a Comment

Get Syllabus in your Mail

Labels

Accenture Admission Notice - 2010 Admission Notification Anna University Anna University Chennai Anna University Question Papers Anna University Trichy Apparel Technology and Management Aptitude Questions Arts and Science Colleges Biomedical Engineering C and CPP Ebooks Calicut University CBSE Question papers Civil Engineering Civil Service Exams Colleges in India Colleges Result Computer Science Engineering Core Jobs CS R2008 CSE CSIR NET EBooks Download ECE EEE EIE Electives Electrical and Electronics Engineering Electronics and communication Electronics and Instrumentation Engineering Engineering Engineering Colleges in Maharashtra Engineering Colleges in TamilNadu Engineering Admissions Engineering Colleges Engineering Colleges in Karnataka Engineering Jobs Engineering Syllabus Entrance Exam Dates Entrance Exam Results Entrance Examination Exam Time Table Experiencer First Year Syllabus Freshers Full Time Jobs Government jobs in india Hardware and Networking Jobs Hotel Management and Catering Technology IGNOU Information Technology INTEVIEW QUESTIONS IT Jobs JNTU Question Papers Jobs in Bangalore Jobs in Chennai Jobs in Coimbatore Jobs in Delhi Jobs in Hyderabad Jobs in India Jobs in Kerala Jobs in Noida Jobs in Tamilnadu Jobs in TATA Karnataka Educations Lab Manuals Mechanical Engineering Medical Colleges Placement Papers Plus 2 Preparation for exams Private Jobs in India Question Papers Question Papers Download Results Announcement Semester 1 Semester 2 Semester 3 Semester 4 Semester 5 Semester 6 Semester 7 Semester 8 Syllabus Syllabus Download Tamil Movie TCS Placement Papers Teaching Jobs TECH MAHINDRA Textile Technology Top colleges University Results UPSC VICEVESVARAYA TECHNOLOGICAL UNIVERSITY waec Walk-in Interview Web Designers

Followers

Archive

Anna university Engineering Syllabus

Earn Money From Online

Government jobs in india

Admission Notification

Total Pageviews

 

Privacy Policy
http://topengineeringcollegesintamilnadu.blogspot.com use third-party advertising companies to serve ads when you visit our website. These companies may use information (not including your name, address, email address, or telephone number) about your visits to this and other websites in order to provide advertisements about goods and services of interest to you. If you would like more information about this practice and to know your choices about not having this information used by these companies, click here.