STUPIDSID
1 (a) (i)
State the importance of study of "Material Science" and briefly explain engineering requirement of materials.
3 M
1 (a) (ii)
What are slip bands and slip lines? Draw required sketches. What causes the formation of such bands on a metal surface.
4 M
1 (b)
Explain and differentiate Edge dislocation and Screw dislocation with neat sketch.
7 M
2 (a)
What is critical nucleus? In case of crystallization of metals, what is the difference between an embryo and a nucleus. What is the significance of critical radius of a solidifying particle?
7 M
Answer any one question from Q2 (b) & Q2 (c)
2 (b)
Using Gibb's phase rule, explain unary phase diagram with the help of sketch.
7 M
2 (c)
What is cooling curve? Explain and differentiate time temperature cooling curve of an alloy of eutectic composition and pure metal.
7 M
Answer any two question from Q3 (a), (b) & Q3 (c), (d)
3 (a)
Write a short note on: "Iron-iron carbide equilibrium diagram".
7 M
3 (b)
With the aid of an iron- iron carbide equilibrium diagram show and explain eutectic, peretectic and eutectoid transformation. Also mention the significance of these transformations.
7 M
3 (c)
State composition, specific properties and applications of Grey Cast Iron.
7 M
3 (d)
What is phase diagram? Explain Lever rule.
7 M
Answer any two question from Q4 (a), (b) & Q4 (c), (b)
4 (a)
Explain the steps to obtain the TTT-diagram for eutectoid steel and show on it the cooling curve representing annealing and hardening process.
7 M
4 (b)
What are the purpose of Alloying ? Give effects of nickel as an alloying element.
7 M
4 (c)
Describe and compare Austempering and Martempering.
7 M
4 (d)
Enlist the properties of pure aluminium and mention the composition, properties and application of any one aluminium alloy
7 M
Answer any two question from Q5(a), (b) & Q5 (c), (d)
5 (a)
What is Powder Metallurgy? Explain the process of Powder Metallurgy.
7 M
5 (b)
What do you mean by Non-destructive testing? Differentiate destructive and non-destructive testing by stating benefits and limitations.
7 M
5 (c)
Describe with neat sketch how would you carry out a Jominy harden ability test on a steel sample.
7 M
5 (d)
Give specific applications of powder metallurgy parts also describe merits and de-merits of powder metallurgy proess.
7 M
More question papers from Material Science & Metallurgy