Top 1000+ Solved Material Science MCQ Questions Answer
Q. requires more stress to be initiated with respect to
a. slip, twinning
b. twinning, slip
c. grain boundary defect, slip
d. none of the above
Q. as compared to slip the stress required to propogate twin is
a. more
b. lesser
c. constant
d. varies randomly
Q. the appears as a pair of thick lines in the microscopic structure even after polishing
a. slip
b. twinning
c. combination of slip and twinning
d. all of the above
Q. The appears as a single thin line in the microscopic structure
a. slip
b. twinning
c. combination of slip and twinning
d. all of the above
Q. the disappears after polishing
a. slip
b. twinning
c. combination of slip and twinning
d. all of the above
Q. the can be seen in metal even after polishing
a. slip
b. twinning
c. combination of slip and twinning
d. all of the above
Q. the mechanism can be takes place due to thermal treatment
a. slip
b. twinning
c. combination of slip and twinning
d. all of the above
Q. metals with FCC crystal structure are often subjected to
a. slip
b. twinning
c. less of slip and more of twinning
d. all of the above
Q. metals with FCC and BCC crystal structure are often subjected to
a. slip
b. twinning
c. combination of slip and twinning
d. all of the above
Q. number of slip systems in metals decides about
a. hardness of metals
b. strength of metal
c. ductility of metal
d. all of the above
Q. the law is used to determine the value of critical shear stress
a. millers
b. burgers
c. schmids
d. none of the above
Q. the schmids law is used to calculate critical shear stress for _ structure
a. polycrystalli ne
b. single crystal
c. atoms
d. none of the above
Q. slip starts to occur when the value of resolved shear stress
a. reduces below critical shear stress
b. is at critical shear stress
c. increases abive critical shear stress
d. none of the above
Q. FCC metals have value of critical shear stress as compared to BCC metals
a. same
b. lower
c. higher
d. random