1. Dimpling and flaring
2. Welding and soldering
3. Threading and boring
4. Hobbing and swaging
Hobbing and swaging
1. strain hardening
2. shrinkage
3. surface decolouring
4. surface roughness
strain hardening
1. dies are of exact dimention
2. no shrinkage occurs
3. strength increases
4. higher deforming force is applied
no shrinkage occurs
1. annealed
2. tempered
3. hardened
4. normalized
annealed
1. grain refinement takes place
2. strength and hardness increase
3. no consequent heat treatment is needed
4. force required is relatively small
strength and hardness increase
1. all deformations occur in the direction of stretch
2. all forces are applied in the direction of stretch
3. advantage is taken of plastic state induced due to stretch
4. no dies are used
advantage is taken of plastic state induced due to stretch
1. thicker metal, smaller bend angle, smaller bend radius
2. harder metal, smaller bend angle, larger bend radius
3. thinner metal, smaller bend angle larger bend radius
4. thicker metal, larger bend angle, smaller bend radius
harder metal, smaller bend angle, larger bend radius
1. I and II are correct and II is the reason for I
2. I and II are independently correct
3. I is correct and II is not
4. II is correct and I is not
II is correct and I is not
1. Bottom bending
2. Three point bending
3. Air bending
4. none of the above
Bottom bending
1. Bottom bending
2. Air bending
3. Three point bending
4. All of the above
Air bending