31. Which one of the following refers to the ability of a material to absorb energy when deformed elastically?
32. The preferred alloying for low temperature application of steel is
33. A soft magnetic material should have
34. Match the cast irons with applications.
P. Grey cast iron
1. S.G iron pipes
Q. White cast iron
2. Chemical processing equipments requiring high corrosion, erosion and heat resistance
R. Nodular cast iron
3. Bases or beds of industrial equipments
S. Ni resist cast iron
4. Manufacture of malleable cast iron
| P. Grey cast iron | 1. S.G iron pipes |
| Q. White cast iron | 2. Chemical processing equipments requiring high corrosion, erosion and heat resistance |
| R. Nodular cast iron | 3. Bases or beds of industrial equipments |
| S. Ni resist cast iron | 4. Manufacture of malleable cast iron |
35. As compared to the engineering stress-engineering strain curve, the true stress-true strain curve for a given material
36. Match the materials listed in Group I with the most appropriate applications listed in Group II.
Group I
Group II
P. Iron-silicon alloy
1. Heating element
Q. GaAs
2. Ultrasonic generator
R. Nichrome
3. Transformer core
S. Quartz crystals
4. Light emitting diode
| Group I | Group II |
| P. Iron-silicon alloy | 1. Heating element |
| Q. GaAs | 2. Ultrasonic generator |
| R. Nichrome | 3. Transformer core |
| S. Quartz crystals | 4. Light emitting diode |
37. Wood is a naturally occuring . . . . . . . . material.
38. Match the following materials to their specific applications.
P. White cast irons
1. Damping capacity
Q. Age hardened Al alloys
2. Wear resistance
R. Grey cast irons
3. High temperature applications
S. Superalloys
4. Aerospace structural applications
| P. White cast irons | 1. Damping capacity |
| Q. Age hardened Al alloys | 2. Wear resistance |
| R. Grey cast irons | 3. High temperature applications |
| S. Superalloys | 4. Aerospace structural applications |
39. Match the material/application in the following cases.
P. Grey cast iron
1. Lathe bed
Q. Austenitic stainless steel
2. Oil piplines
R. High strength low alloy steel
3. Gas turbine engines components
S. Nickel base superalloy
4. Cryogenic service
| P. Grey cast iron | 1. Lathe bed |
| Q. Austenitic stainless steel | 2. Oil piplines |
| R. High strength low alloy steel | 3. Gas turbine engines components |
| S. Nickel base superalloy | 4. Cryogenic service |