Download AKTU B-Tech 3rd Sem 2015-2016 ME 303 Material Science In Engineering Question Paper

Printed Pages: 3                                                                                                                         608

ME-303

(Following Paper ID and Roll No. to be filled in your Answer Book)

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Paper ID :140313                                                                                                            Roll No.

B. Tech.

(SEM. III) THEORY EXAMINATION, 2015-16

MATERIAL SCIENCE IN ENGINEERING

[Time:3 hours]                                                                                                                                                                                                                         [Total Marks:100]

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Note: Attempt all 3 sections.

Section-A

1. Attempt all parts. All parts carry equal marks. Write answer of each part in short. (2x10=20)
   1. What do you mean by diffusion?
   2. Write two examples of thermoplastic.
   3. Write composition of solder.
   4. What do you mean by true stress?

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   5. What is difference between iron and steel?
   6. What do you mean by unit cell ?
   7. Define the term fatigue.
   8. What do you mean by SS and HSS?
   9. Which is the purest form of iron?

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   10. What do you mean by yielding of a material?

Section-B

Attempt any five questions from this section. (10x5= 50)

2. What do you mean by Creep? Also explain Phases and mechanism.
3. Differentiate between Amorphous and crystalline material.

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4. Write the classification of NDT and explain LPT.
5. Define Ceramics and classify it. Write the properties of ceramics.
6. What are hard and soft magnetic materials? Explain with reference to hysteresis loop.
7. Write short notes on Thermosetting plastic with examples.
8. What do you mean by hardness? Classify different types of hardness measuring methods and explain any one.

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9. Explain the following terms :
   1. Toughness
   2. Brittle material
   3. Compaction

Section-C

Attempt any two questions from this section. (15x2=30)

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10. Explain iron carbon diagram with a neat sketch.
11. Draw the neat sketch of TTT diagram for eutectoid steel and label the regions.
12. Explain stress - strain diagram for mild steel and cast iron with neat sketch.

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