Top 1000+ Solved Material Science MCQ Questions Answer

From 136 to 150 of 923

Q. The displacement distance for atoms around the dislocation is the

a. edge dislocation

b. screw dislocations

c. burger vector

d. none of the above

  • c. burger vector

Q.                        dislocations can glide & climb

a. screw

b. edge

c. twinning

d. cross

  • b. edge

Q.                       dislocations can glide only

a. screw

b. edge

c. twinning

d. cross

  • a. screw

Q.                    plays an important role in crystal growth.

a. edge dislocation

b. screw dislocations

c. twinning

d. none of the above

  • b. screw dislocations

Q. work hardening reduces :

a. hardness

b. toughness

c. ductility

d. none of the above

  • c. ductility

Q. Chances of cracks propagation is more in :

a. hot working

b. cold working

c. welding

d. machining

  • b. cold working

Q. In working refinement of crystal occurs.

a. hot

b. cold

c. welding

d. machining

  • a. hot

Q. working is always accompanied by strain hardening

a. hot

b. cold

c. rolled

d. none of the above

  • b. cold

Q.                  working increases ultimate tensile strength.

a. hot

b. cold

c. rolled

d. none of the above

  • b. cold

Q. Miller indices are the same for :

a. parallel planes

b. perpendicul ar planes

c. orthogonal planes

d. none of the above

  • a. parallel planes

Q. 0.68 is atomic factor of

a. sc

b. bcc

c. fcc

d. hcp

  • b. bcc

Q. 4 is avg. atoms per unit cell for

a. sc

b. bcc

c. fcc

d. hcp

  • c. fcc
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