Download SGBAU B-Tech 4th Sem Material Technology Question Paper

Download SGBAU (Sant Gadge Baba Amravati university) B-Tech/BE (Bachelor of Technology) 4th Sem Material Technology Previous Question Paper

B.Tech. F ourth Semester (F 00d, Pulp & Paper, Oil & Paint & Petro Chem.Tech.) (CGS)
11012 : Material Technology : 4 CT 04
P. Pages : 2 4 AW - 3080
Time : Three Hours lung's?! Max. Marks : 80
Notes ; 1. Answer three question from Section A and three question from Section B.
2. Due credit will be given to neatness and adequate dimensions.
3. Diagrams and chemical equations should be given wherever necessary.
4. Illustrate your answer necessary with the help of neat sketches.
5. Use of cell phone is not allowed.
6. Use of pen Blue/Black ink/re?ll only for writing the answer book
SECTION ? A
1. 3) Explain the difference between Crystalline and non crystalline structure of metals? 7
b) De?ne Co ?? ordinate number and explain the difference between ECG and FCC structure. 7
OR
2. a) What are structure sensitive and structure insensitive properties? Explain with suitable 7
example. '
b) What do you mean by imperfection in crystal? Explain one dimensional defect. 7
3. 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
4. a) How mechanical properties change with changes in temperature? Explain with suitable 7
example.
b) What do you mean by metal failure under service conditions? Explain with suitable 6
example.
5. 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
6. a) How solidi?cation of pure metals occur and discuss the phenomena of nucleation and 7
grain growth in metals.
b) Discuss in details the intersolubility of two different metals in liquid and solid state with 6
some suitable example.
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SECTION ? B
What are the advantages of heat rrcamem oinietals and why is it necessary?
What is annealing and how is it pcrfrmncd? Explain the salient features.
OR
What are the various heat treatment techniques and explain the meaning of case
hardening.
How is nitriding and surface hardening is achieved?
What are refractories? Explain their zmponant properties and applications.
How are elastomcrs produced? Explain their applications.
OR
What are thermosetting materials? Explain lhcir applications.
What are ceramics? State and explain their important properties and applications.
Explain the corrosion mechanism and lhc?Ol?iE?S ofcorrosion.
What are non destructive methods ()f?tcsting?.? Explain in details.
OR
Expla' n the role of protective coatings in prevention of corrosion.
What are the various fomis o?r?cnrrcsion? Explain in details.
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