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Manufacturing Engineering Ii
Manufacturing Science Basic
Quiz 1
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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
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