Q.1
The ratio of ______ is frequently used in the interpretation of recrystallization data.
  • a) yield strength of test specimen and standard specimen
  • b) temperature and time
  • c) rate of nucleation and rate of growth
  • d) rate of recrystallization and polygonization
Q.2
Many nuclei will form before the recrystallization process is completed if the ratio of the rate of nucleation to the rate of growth is _____
  • a) high
  • b) low
  • c) equal to 1
  • d) higher than rate of grain growth
Q.3
The ratio N to G decreases in magnitude with decreasing _____
  • a) temperature
  • b) stress
  • c) strain
  • d) grain size
Q.4
The rate of recrystallization is dependent upon how many variables?
  • a) 2
  • b) 3
  • c) 4
  • d) It is an independent value
Q.5
Which of the following materials has rapid rates of recrystallization?
  • a) Pure metals
  • b) Alloys
  • c) Ductile metals
  • d) Coinage metal
Q.6
The increase in the recrystallization temperature caused due to foreign atoms depends on _____
  • a) nature of foreign atoms
  • b) temperature of foreign atoms
  • c) size of foreign atoms
  • d) electronegativity of foreign atoms
Q.7
Decreasing the grain size increases the _____
  • a) recrystallization time
  • b) nucleation rate
  • c) grain boundary area
  • d) recrystallization temperature
Q.8
_____ is the driving force for grain growth.
  • a) Strain
  • b) Surface energy
  • c) Recrystallization
  • d) Surface hardness
Q.9
Annealing of a slightly deformed metal specimen can lead to a localized, very coarse-grain growth.
  • a) True
  • b) False
Q.10
Foreign atoms lowers the recrystallization rates.
  • a) True
  • b) False
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