This download link is referred from the post: SGBAU B.Tech Last 10 Years 2010-2020 Question Papers || Sant Gadge Baba Amravati university
B.Tech. Fourth Semester (Food, Paint & Petro)
11012 : Material Technology : 4 CT 04
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Pages: 2
Time : Three Hours Max. Marks : 80
Notes:
- Answer three questions from Section A and three questions from Section B.
- Due credit will be given to neatness and adequate dimensions.
- Diagrams and chemical equations should be given wherever necessary.
- Illustrate your answer with the help of neat sketches.
- Use of cell phone is not allowed.
- Use of pen Blue/Black ink/refill only for writing the answer book
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SECTION - A
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- a) Explain the difference between Crystalline and non-crystalline structure of metals? 7
b) Define Co-ordinate number and explain the difference between BCC and FCC structure. 7
OR
- a) What are structure sensitive and structure insensitive properties? Explain with suitable example. 7
b) What do you mean by imperfection in crystal? Explain one dimensional defect. 7
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- a) Explain in details the grain growth in crystals. 7
b) Explain in details recrystallization of metals and its effect on metal structure. 6
OR
- a) How mechanical properties change with changes in temperature? Explain with suitable example. 7
b) What do you mean by metal failure under service conditions? Explain with suitable example. 6
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- a) Differentiate between white cast iron and grey cast iron and the phase diagram for metals. 7
b) How will you prepare iron carbon diagram? Explain in details. 6
OR
- a) How solidification of pure metals occur and discuss the phenomena of nucleation and grain growth in metals. 7
b) Discuss in details the intersolubility of two different metals in liquid and solid state with some suitable example. 6
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- a) What are the advantages of heat treatment of metals and why is it necessary? 7
b) What is annealing and how is it performed? Explain the salient features. 7
OR
- a) What are the various heat treatment techniques and explain the meaning of case hardening. 7
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b) How is nitriding and surface hardening is achieved? 7
- a) What are refractories? Explain their important properties and applications. 7
b) How are elastomers produced? Explain their applications. 7
OR
- a) What are thermosetting materials? Explain their applications. 7
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b) What are ceramics? State and explain their important properties and applications. 7
- a) Explain the corrosion mechanism and theories of corrosion. 7
b) What are non-destructive methods of testing? Explain in details. 7
OR
- a) Explain the role of protective coatings in prevention of corrosion. 7
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b) What are the various forms of corrosion? Explain in details. 7
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This download link is referred from the post: SGBAU B.Tech Last 10 Years 2010-2020 Question Papers || Sant Gadge Baba Amravati university