College : Psg Polytechnic College
Degree : DME (Diploma in Mechanical Engineering)
Semester : III
Subject : M12304/D12304 Engineering Materials & Applications
Document Type : Model Question Paper
Website : psgpolytech.ac.in
Download Model/ Sample Question Papers :
https://www.pdfquestion.in/uploads/psgpolytech.ac.in/6190-M12304%20%20ENGINEERING%20MATERIALS%20AND%20APPLICATIONS.pdf
Engineering Materials & Applications Question Paper :
Instructions :
1. Group A and Group B questions should be answered in the Main Answer book.
2. Answer any TEN questions in Group A. Each question carries three marks.
Related : PSG Polytechnic College M12303/D12303 Hydraulics & Hydraulic Machines DMEQuestion PaperModel : www.pdfquestion.in/6189.html
3. Answer ALL questions either (a) subdivision or (b) subdivision in Group B. Each question carries 14 marks.
PSG POLYTECHNIC COLLEGE, COIMBATORE – 641 004
M12304/D12304 Engineering Materials And Applications
Model Question Paper
Time : 3 Hours Max. Marks: 100
Group – A Marks : 10 x 3 = 30
1. Distinguish between Crystalline & Amorphous materials
2. Explain with a sketch BCC structure
3. What are the uses of rubber-
4. Mention the various types of iron ore available
5. Write the composition & applications of wrought iron
6. Write the properties & uses of mild steel
7. Discuss the uses of HSS
8. State the purpose of alloying
9. Give the uses of Stainless Steel
10. What are the advantages of using non-ferrous metals in engineering applications?
11. Give the properties and uses of Nickel
12. How is copper extracted- Give its uses
13. Why is heat treatment done-
14. Explain the use of annealing briefly
15. What are the different processes of heat treatment carried
Group– B Marks : 5 x 14 = 70
16. a) Compare between thermoplastic & thermosetting plastics
(OR)
b) With a neat sketch explain the procedure for producing plastic laminated sheets
17. a) How is steel classified? Give a flow chart & explain
(OR)
b) Explain the properties and uses of medium carbon steel
18. a) Give a detailed account of all the three types of stainless steels
(OR)
b) Illustrate the properties and applications of Molybdenum Alloys
19. a) Describe the composition and uses of Titanium Alloys
(OR)
b) Discuss the Standard Commercial sizes of Non Ferrous Metals.
20. a) What are the different processes of heat treatment carried on tool steels. Explain in brief.
(OR)
b) Write the reasons & explain the process of case hardening
Manufacturing Processes Question Paper :
Time : 3 Hours
Max.Marks : 100
Group – A Marks : 10 x 3 = 30
1. What are the common materials used for pattern-making-
2. Draw a sketch of a typical mould and name its principal parts.
3. Classify different types of moulds.
4. Name the common materials used for forging.
5. Describe press forging.
6. What is the difference between the hammer and press forging-
7. What are the common forging defects-
8. List out the applications of welding
9. What are the functions of coatings on shielded electrodes-
10. Describe resistance welding.
11. What is meant by hot spinning.
12. Specify the merits of different kinds of rolling mills.
13. What is a press- Where it is used-
14. Name various parts of power press.
15. What is meant by Sintering-
Group– B Marks : 5 x 14 = 70
16. a.i] How are patterns classified? Describe them with neat sketches and state the uses of each of them. (7)
ii] Write short notes on core making process. (7)
(OR)
b) i] Sketch a cupola and label the essential parts. Describe the operation of a cupola Furnace. (7)
ii] State the methods of cleaning castings. Explain any one method. (7)
17.a) i] What do you understand by gas welding? Describe in brief the equipment required for oxy- Acetylene welding? (7)
ii] How are neutral, oxidizing and reducing flames obtained in a welding torch? (7)
(OR)
b)Describe and explain the following welding methods giving their advantages, limitations and specific applications:
(i) MIG (ii) TIG
18.a)i)State the difference between ‘smithing and forging. List the advantage and disadvantage of each. (7)
ii) Explain roll forging and its principal uses. (7)
(OR)
b )i) Describe press forging. How does it differ from drop forging? (7)
ii) explain with neat sketches the following operations:
1)upsetting 2)punching 3)bending 4) drawing down (7)
19.a)Explain briefly with neat sketches different processes of extrusion and also discuss their relative merits and demerits.