Q.1
Polygonization is essentially completed before the start of ______
  • a) solidification
  • b) recrystallization
  • c) cooling
  • d) grain growth
Q.2
The recrystallized grain size is the crystal size immediately at the end of ______
  • a) polygonization
  • b) deformation
  • c) recrystallization
  • d) 1 hr from the start of the recrystallization
Q.3
The grain size grows rapidly with decreasing ______
  • a) temperature
  • b) deformation
  • c) yield strength
  • d) hardness
Q.4
The critical amount of cold work is the ______
  • a) minimum amount of cold work that allows recrystallization
  • b) maximum amount of cold work that allows recrystallization
  • c) amount of cold work need to recover the specimen
  • d) amount of cold work needed to increase the yield strength by 10 MPa
Q.5
The critical deformation is not dependent on ______
  • a) material properties
  • b) tension
  • c) torsion
  • d) compression
Q.6
Plastic deformation occurs without roughing of the surface if the grain size of the metal is less than _____ in diameter.
  • a) 0.002 mm
  • b) 0.05 mm
  • c) 0.1 mm
  • d) 1 mm
Q.7
If the diameter of the average grain is large, cold working produces _____
  • a) smooth surface
  • b) roughened surface
  • c) highly tensed surface
  • d) cracks
Q.8
Which of the following is responsible for the orange-peel effect?
  • a) Large diameter
  • b) Isotropic nature of the material
  • c) Anisotropic nature of the material
  • d) Deformation
Q.9
Critical deformation may exceed several hundred percent in case of deformation due to easy glide.
  • a) True
  • b) False
Q.10
In metal that is cold-rolled, it is relatively easy to avoid a critical amount of cold work.
  • a) True
  • b) False
0 h : 0 m : 1 s