Manufacturing Processes II Mock Test 9

10%

Question 1 of 10

1. Recrystallization during an isothermal anneal begins very slowly.

True

False

Question 1 of 10

Question 2 of 10

2. The recrystallization temperature is ______

an independent function

a time dependent function

dependent on polygonization rate

a material property

Question 2 of 10

Question 3 of 10

3. The rate of polygonization increases rapidly with _____

grain size

density

temperature

humidity

Question 3 of 10

Question 4 of 10

4. The improved coupling in case of welding of high reflectivity materials using twin beam lasers is due to _____

surface smoothness

surface rippling

surface tension

surface area

Question 4 of 10

Question 5 of 10

5. In case of laser welding of dissimilar metals, there are chances of formation of _____

thin welds

brittle welds

cracks

porous welds

Question 5 of 10

Question 6 of 10

6. In deformed polycrystalline metals, high-temperature recovery is considered to be essentially a matter of polygonization.

True

False

Question 6 of 10

Question 7 of 10

7. The pressure at the centre is a function of the _____

gap tolerance

joint geometries

surface tension

material composition

Question 7 of 10

Question 8 of 10

8. Recrystallization is the formation of a new strain-free grain.

True

False

Question 8 of 10

Question 9 of 10

9. Which of the following lasers is suitable for welding of components made of aluminium?

Nd-YAG laser

Dye laser

Combination of ruby and CO₂ lasers

Combination of CO and Excimer lasers

Question 9 of 10

Question 10 of 10

10. The critical deformation is not dependent on ______

tension

torsion

compression

material properties

Question 10 of 10