A. Fracture
B. Dislocation
C. Slip
D. Twinning
Related Mcqs:
- Strain hardening effect in metals subjected to cold working is due to the _______________ mechanism?
A. Slip
B. Fracture
C. Winning
D. Dislocation - A cylindrical rod subjected to a tensile strain within the elastic limit undergoes a volume change. If the volume strain is equal to half the tensile strain, then the Poisson’s ratio of the rod is___________________?
A. 0
B. 0.33
C. 0.44
D. 0.25 - To counteract the bad effects of strain hardening on a cold formed part, it must be ______________________?
A. Tempered
B. Normalised
C. Annealed
D. Hardened - Cold working of a material results in increase in hardness, which is termed as the ______________ hardening ?
A. Cold
B. Work
C. Age
D. Induction - A metal having a Poisson’s ratio = 0.3 is elastically deformed under uniaxial tension. If the longitudinal strain = 0.8, then the magnitude of thickness strain is________________?
A. -0.8
B. 0.8
C. +0.08
D. -0.24 - ______________ circuit is most commonly used to measure strain with the help of a strain gauge?
A. Ballast
B. Voltage balancing potentiometric
C. Simple current sensitive
D. None of these - Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part ?
A. Anodising
B. Tempering
C. Carburising
D. Annealing - The mechanism involved in the removal of metal in drilling operation is by_________________?
A. Compression
B. Extrusion
C. Shearing
D. Both B & C - The elastic strain in copper is due to the__________________?
A. Motion of dislocations
B. Stretching of atomic bonds
C. Breakage of atomic bonds
D. None of the above - Solidification time of a molten metal in a casting is proportional to (where, V = volume of metal & A = its surface area; in the casting) ?
A. V/A
B. V/A2
C. V2/A
D. V2/A2
