STUPIDSID
1 (a)
With neat sketch,explain body centered cubic face centered and closed packed hexagonal srtructures with exampe.
9 M
1 (b)
Derive expresion for atomic packing factor of BCC,FCC and HCP structure
7 M
1 (c)
Briefly explain the different types of point defects
4 M
2 (a)
With the help of stress -strain digram.expalin the behaviour of ductile and brittle materials
8 M
2 (b)
The follwing data have been obatined in hardness test of speciments.calculate the hardness number.assume dia of ball indentor =10mm.
| Material | types | Load (kgf) | impression(mgf) |
| A | brinells | 500 | 4.6 |
| B | vickers | 5 | 0.28 |
6 M
2 (c)
Define the following terms Thoughness,Resiliance ,Proof stress and ductility.
6 M
3 (a)
With neat digram , explain the frature in the following:
Ductile
Brittle
Fatigue
Ductile
Brittle
Fatigue
12 M
3 (b)
Explain the three stages of creep with a neat sketch and its characteristic
8 M
4 (a)
with net diagram ,explain the process of nuclation
4 M
4 (b)
Write a note on Gibbs phase rule with an example
4 M
4 (c)
with the help of cooling curve,explain how solidification process begins in pure metals
6 M
4 (d)
Briefly explain the rules behind the solid solubility
5 M
5 (a)
Construct the Ag-Cu phase diagram using following data;
Melting point of Ag=960.5°c
Melting point of Cu=1085°C
Eutectic point=779.4°c
Eutectic compoistion =28.1%Cu
Maximum solubilty of Ag in Cu and Cu in Ag is 8%
maximum solubilty of Cu in Ag in Cu is 2%.Assume the liquids ,solidus and solves lines are stright .calculate:
Amount of eutectic in 20% Cu,80%Ag alloy at 700°c and
Percentage and composition of solid phase in 60%Cu and 40% Ag alloy 400°C.
Melting point of Ag=960.5°c
Melting point of Cu=1085°C
Eutectic point=779.4°c
Eutectic compoistion =28.1%Cu
Maximum solubilty of Ag in Cu and Cu in Ag is 8%
maximum solubilty of Cu in Ag in Cu is 2%.Assume the liquids ,solidus and solves lines are stright .calculate:
Amount of eutectic in 20% Cu,80%Ag alloy at 700°c and
Percentage and composition of solid phase in 60%Cu and 40% Ag alloy 400°C.
10 M
5 (b)
What is level rule?Explain how it is useful.
5 M
5 (c)
What is phase diagrams?how are they classified?
5 M
6 (a)
Draw Iron -carbon equlibrium diagram and explain primary crystallization of steel hypoeutectic cast iron hypereutectic cast iron
10 M
6 (b)
Define the following anneling ,normalization,tempring ,carburizing and nitriding
10 M
7 (a)
How cast iron classified ?What are the properties of cast iron?
8 M
7 (b)
How generally steels are classified ?consider at least two compostion mixture .mention its application and advantages
6 M
7 (c)
Explain the composition ,properties and used of at least two copper based alloys
6 M
8 (a)
Derive an expresion for load distribution in a composite for longitudianal loading of fiber reinforced composite
10 M
8 (b)
With a neat diagram ,explain the hand laminating process
10 M
More question papers from Material Science & Metallurgy