Top 1000+ Solved Material Science MCQ Questions Answer
Q. Grain boundaries decides of dislocations that can move
a. lenghts
b. magnitude
c. direction
d. none of the above
Q. Lower the degree of deformation, recrystallization temperature is
a. higher
b. lower
c. no effect
d. either higher or lower
Q. Higher the degree of deformation, recrystallization temperature is
a. higher
b. lower
c. no effect
d. either higher or lower
Q. Hot working process is carried out on……….. Recrystallisation temp.
a. equal
b. above
c. below
d. none of the above
Q. If the deformation is carried at 0°C, it is
a. cold working
b. hot working
c. both a and b
d. can’t say
Q. If the deformation is carried at 100°C, it is
a. cold working
b. hot working
c. both a and b
d. can’t say
Q. If the deformation is carried at 500°C, it is
a. cold working
b. hot working
c. both a and b
d. can’t say
Q. If the deformation is carried out above RCT, it is
a. cold working
b. hot working
c. both a and b
d. none
Q. If the deformation is carried out below RCT, it is
a. cold working
b. hot working
c. both a and b
d. none
Q. In case of polycrystalline materials regeneration rate of dislocations
a. increases
b. decreases
c. remains same
d. can’t say