STUPIDSID
Solve any one question from Q1 and Q2
1 (a)
With a neat diagram show the cooling curve of eutectic
diagram and show the application of Gibb's phase rule in each region.
4 M
1 (b)
What is nucleation ? What are its types ?
2 M
1 (c)
Draw the steel region of Iron-Carbon equilibrium diagram and
explain Austenite and Pearlite phase in detail.
6 M
2 (a)
Explain classification of tool steel in detail.
4 M
2 (b)
What do you mean by weld decay ?
2 M
2 (c)
What is coring ? Which alloys shows coring ?
4 M
2 (d)
Explain the following:
i) Phase
ii) Variable.
i) Phase
ii) Variable.
2 M
Solve any one question from Q3 and Q4
3 (a)
Draw and show the following heat treatments on TTT curve and state the transformed product:
(i) Martempering
(ii) Austempering
(iii) Ausforming.
(i) Martempering
(ii) Austempering
(iii) Ausforming.
6 M
3 (b)
Explain in detail stress corrosion and pitting corrosion with the remedies to avoid it.
7 M
4 (a)
What are the various transformation products of austenite? Explain any one in detail with respect to transformation mechanism, temp, characteristics and structure.
7 M
Write short note on:
4 (b) (i)
Intergranular corrosion
3 M
4 (b) (ii)
Electroplating.
6 M
Solve any one question from Q5 and Q6
5 (a)
Compare gray cast iron and white cast iron with respect to composition, microstructure, application.
6 M
5 (b)
What are the advantages of cast iron over steel? Explain the role of Si and Phosphorous in cast iron.
7 M
6 (a)
Suggest the suitable cast iron for the following applications and justify:
i) Jaw crusher
ii) Automobile shaft
iii) Bearing.
i) Jaw crusher
ii) Automobile shaft
iii) Bearing.
6 M
6 (b)
Explain in detail production of modular and malleable cast iron.
7 M
Solve any one question from Q7 and Q8
7 (a)
Suggest suitable non-ferrous material for the following applications and write its composition:
i) Imitation Jewellery
ii) Bell
iii) Coins.
i) Imitation Jewellery
ii) Bell
iii) Coins.
6 M
7 (b)
Explain the role of Sn in brass.
2 M
7 (c)
Describe the classification of Brasses.
4 M
8 (a)
Enlist type of non-ferrous bearings. Why are they used in bearing? Explain any one in detail.
6 M
8 (b)
Explain with a neat diagram how the strength of Al-Cu alloy can be increased.
6 M
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