Related Questions

Strain hardening effect in a metal subjected to cold working is due to the __________ mechanism.
A Fracture
B Dislocation
C Slip
D Twinning
The only suitable method for hardening the low carbon steel is case hardening. Which of the following is a case hardening process?
A Cyaniding
B Sheardising
C Spherodising
D None of these
A cylinderical 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
The increase in hardness of metal due to its cold working is termed as the __________ hardening.
A Work
B Age
C Induction
D Flame
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
Two men and women are entrusted with a task. The second man needs three hours more to cope up with the job than the second man and the woman would need working together. The first man, working alone, would need as much time as second man and the woman working together. The first man working alone, would spend eight hours less than the double period of the time second man would spend working alone. How much time would the two men and the women need to complete the task if they all asked together?
A 1 hour
B 2 hours
C 3 hours
D 4 hours
E 5 hours
Which is false statement about case hardening? Case hardening is done by
A Electroplating
B Cyaniding
C Induction hardening
D Nitriding
A thin cylindrical shell of diameter (d), length ($$l$$) and thickness (t) is subjected to an internal pressure (p). The ratio of longitudinal strain to hoop strain is
A $$\frac{{{\text{m}} - 2}}{{2{\text{m}} - 1}}$$
B $$\frac{{2{\text{m}} - 1}}{{{\text{m}} - 2}}$$
C $$\frac{{{\text{m}} - 2}}{{2{\text{m}} + 1}}$$
D $$\frac{{2{\text{m}} + 1}}{{{\text{m}} - 2}}$$
Steel balls are manufactured by cold heading. After cold forming, they are subjected to
A Tempering
B Normalising
C Stress-relieving
D Artificial ageing

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