Question Paper: Material Technology Question Paper - May 16 - Mechanical Engineering (Semester 3) - Mumbai University (MU)
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Material Technology - May 16 (Old Syllabus 2012)

Mechanical Engineering (Semester 3)

Total marks: 80
Total time: 3 Hours
INSTRUCTIONS
(1) Question No. 1 is compulsory
(2) Attempt any three questions from remaining five questions
(3) Draw neat diagrams wherever necessary

Write note on any four

1(a) Thermal fatigue of metal
(5 marks) 298

1(b) Andrade's analysis of classical creep curve.
(5 marks) 290

1(c) Effect of Alloy on Eutectiod temperature and composition.
(5 marks) 323

1(d) Critical resolved shear stress.
(5 marks) 280

1(e) Dislocation Interaction
(5 marks) 00

2(a) What do you mean by Nano-materials? Explain their properties and practical applications.
(10 marks) 330

2(b) What is Fatigue? Explain fatigue testing in detail.
(10 marks) 293

3(a) Draw Fe-Fe3C Diagram and Explain cooling of 0.9% C alloy in the Fe-Fe3C Diagram.
(10 marks) 303

3(b) What is the difference between case hardening and surface hardening? Explain pack carbonizing.
(10 marks) 312 316 320

4(a) Draw and explain construction of Time Temperature Transformation (TTT) diagrams of 0.8% C alloy.
(10 marks) 305

4(b) Derive an expression for Griffith theory of brittle fracture. Explain Orowan's Modification.
(10 marks) 291

5(a) What is plastic deformation? Distinguish between slip and twin mechanism of plastic deformation.
(10 marks) 282

5(b) Classify crystal Imperfections. Distinguish between slip and twin mechanism of plastic deformation.
(10 marks) 282

Q6) Write short note on any four

6(a) Composite materials
(5 marks) 332 329

6(b) Ausforming
(5 marks) 319

6(c) Yield point phenomenon
(5 marks) 00

6(d) Harden ability test
(5 marks) 307

6(e) Normalizing
(5 marks) 319

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modified 8 weeks ago  • written 3 months ago by gravatar for Yashbeer Yashbeer ♦♦ 130
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