If in a crystal there exist a point defect of the interstitial atom and if solute atom smaller than the solvent atom, then which is true for the edge dislocation?

Dislocation will always attract to interstitial atom

Dislocation will always repeal to interstitial atom

Compression side of edge dislocation will repeal and will be attracted to the tension side

compression side of edge dislocation will attract and will be repealed to the tension side

In a crystal, there exist a point defect of the interstitial atom. If solute atom is larger than the solvent atom, then which is true for the edge dislocation?

compression side of edge dislocation will attract and will be repealed to the tension side

Dislocation will always attract to interstitial atom

Dislocation will always repeal to interstitial atom

Compression side of edge dislocation will repeal and will be attracted to the tension side

compression side of edge dislocation will attract and will be repealed to the tension side

Which of the following is not a source of dislocation?

Aggregation and the collapse of vacancy

The metallic tiny whisker are _________

single crystal with high dislocation

tiny projection of the metals with zero dislocation

The interaction of two screw dislocation produces ___________

kink of edge orientation in both screw dislocations

jogs of edge orientation in both screw dislocations

kink of edge orientation in both screw dislocations

jogs of screw orientation in both screw dislocations

kink of screw orientation in both screw dislocations

The interaction of screw dislocation and edge dislocation produces ______ on the edge dislocation and _______ on the screw dislocation.

a kink with an edge orientation, a jog with an edge orientation

a jog with an edge orientation, a kink with an edge orientation

a kink with an edge orientation, a jog with an edge orientation

a jog with a screw orientation, a kink with a screw orientation

a kink with a screw orientation, a jog with a screw orientation

To produce the kink from intersection of two dislocations, the necessary condition is ____________

burger vector of the dislocation should be perpendicular to each other

burger vector of the dislocation should be parallel to each other

burger vector of the dislocation should be perpendicular to each other

burger vector of the dislocation should be directionally opposite to each other

burger vector of the dislocation should be at 45 degrees to each other

To produce the jog from the intersection of two dislocations, the necessary condition is ______

burger vector of the dislocation should be directionally opposite to each other

burger vector of the dislocation should be parallel to each other

burger vector of the dislocation should be perpendicular to each other

burger vector of the dislocation should be directionally opposite to each other

burger vector of the dislocation should be at 45 degrees to each other

14 + Mcqs in Multiplication Dislocation in Mechanical Metallurgy Page 1 McqOptions

1.	If in a crystal there exist a point defect of the interstitial atom and if solute atom smaller than the solvent atom, then which is true for the edge dislocation?
A.	Dislocation will always attract to interstitial atom
B.	Dislocation will always repeal to interstitial atom
C.	Compression side of edge dislocation will repeal and will be attracted to the tension side
D.	compression side of edge dislocation will attract and will be repealed to the tension side
Answer» E.

Discussion

2.	In a crystal, there exist a point defect of the interstitial atom. If solute atom is larger than the solvent atom, then which is true for the edge dislocation?
A.	Dislocation will always attract to interstitial atom
B.	Dislocation will always repeal to interstitial atom
C.	Compression side of edge dislocation will repeal and will be attracted to the tension side
D.	compression side of edge dislocation will attract and will be repealed to the tension side
Answer» D. compression side of edge dislocation will attract and will be repealed to the tension side

Discussion

3.	In the Frank-Read dislocation source, if the distance between fixed points is L, then the minimum possible value of dislocation loop radius will be equal to L/2. The shear stress required to achieve this point is ____________
A.	Gb2
B.	2Gb/L
C.	Gb/L
D.	Gb2/L
Answer» D. Gb2/L

Discussion

4.	In the Frank-Read dislocation source, if the distance between fixed points is L, then the minimum possible value of dislocation loop radius will be equal to__________
A.	L
B.	L/2
C.	2L
D.	3L
Answer» C. 2L

Discussion

5.	If there is no source of dislocation multiplication in metal, the cold work of metal will reduce the dislocation density of the given metal.
A.	True
B.	False
Answer» B. False

Discussion

6.	Which of the following is not a source of dislocation?
A.	Grain boundary steps
B.	Aggregation and the collapse of vacancy
C.	ledges
D.	Interstitial atoms
Answer» E.

Discussion

7.	The metallic tiny whisker are _________
A.	bulk metallic glass
B.	single crystal with high dislocation
C.	tiny projection of the metals with zero dislocation
D.	metal foam
Answer» D. metal foam

Discussion

8.	Is it possible to generate dislocation by thermal activation?
A.	Yes
B.	No
Answer» C.

Discussion

9.	Edge dislocation moves slowly in a crystal compared to a screw dislocation of same burger vector.
A.	True
B.	False
Answer» C.

Discussion

10.	The interaction of two screw dislocation produces ___________
A.	jogs of edge orientation in both screw dislocations
B.	kink of edge orientation in both screw dislocations
C.	jogs of screw orientation in both screw dislocations
D.	kink of screw orientation in both screw dislocations
Answer» B. kink of edge orientation in both screw dislocations

Discussion

11.	The interaction of screw dislocation and edge dislocation produces ______ on the edge dislocation and _______ on the screw dislocation.
A.	a jog with an edge orientation, a kink with an edge orientation
B.	a kink with an edge orientation, a jog with an edge orientation
C.	a jog with a screw orientation, a kink with a screw orientation
D.	a kink with a screw orientation, a jog with a screw orientation
Answer» B. a kink with an edge orientation, a jog with an edge orientation

Discussion

12.	To produce the kink from intersection of two dislocations, the necessary condition is ____________
A.	burger vector of the dislocation should be parallel to each other
B.	burger vector of the dislocation should be perpendicular to each other
C.	burger vector of the dislocation should be directionally opposite to each other
D.	burger vector of the dislocation should be at 45 degrees to each other
Answer» B. burger vector of the dislocation should be perpendicular to each other

Discussion

13.	To produce the jog from the intersection of two dislocations, the necessary condition is ______
A.	burger vector of the dislocation should be parallel to each other
B.	burger vector of the dislocation should be perpendicular to each other
C.	burger vector of the dislocation should be directionally opposite to each other
D.	burger vector of the dislocation should be at 45 degrees to each other
Answer» C. burger vector of the dislocation should be directionally opposite to each other

Discussion

14.	A ________ is a sharp break in the dislocation line by moving it out of the slip plane. A _______ is a sharp break in the dislocation line, but it remains in the slip plane.
A.	jog, kink
B.	kink, jog
C.	jog, jog
D.	kink, kink
Answer» B. kink, jog

Discussion

Explore topic-wise MCQs in Mechanical Metallurgy.

If in a crystal there exist a point defect of the interstitial atom and if solute atom smaller than the solvent atom, then which is true for the edge dislocation?

In a crystal, there exist a point defect of the interstitial atom. If solute atom is larger than the solvent atom, then which is true for the edge dislocation?

In the Frank-Read dislocation source, if the distance between fixed points is L, then the minimum possible value of dislocation loop radius will be equal to L/2. The shear stress required to achieve this point is ____________

In the Frank-Read dislocation source, if the distance between fixed points is L, then the minimum possible value of dislocation loop radius will be equal to__________

If there is no source of dislocation multiplication in metal, the cold work of metal will reduce the dislocation density of the given metal.

Which of the following is not a source of dislocation?

The metallic tiny whisker are _________

Is it possible to generate dislocation by thermal activation?

Edge dislocation moves slowly in a crystal compared to a screw dislocation of same burger vector.

The interaction of two screw dislocation produces ___________

The interaction of screw dislocation and edge dislocation produces on the edge dislocation and _ on the screw dislocation.

To produce the kink from intersection of two dislocations, the necessary condition is ____________

To produce the jog from the intersection of two dislocations, the necessary condition is ______

A __ is a sharp break in the dislocation line by moving it out of the slip plane. A _ is a sharp break in the dislocation line, but it remains in the slip plane.

Explore topic-wise MCQs in Mechanical Metallurgy.

If in a crystal there exist a point defect of the interstitial atom and if solute atom smaller than the solvent atom, then which is true for the edge dislocation?

In a crystal, there exist a point defect of the interstitial atom. If solute atom is larger than the solvent atom, then which is true for the edge dislocation?

In the Frank-Read dislocation source, if the distance between fixed points is L, then the minimum possible value of dislocation loop radius will be equal to L/2. The shear stress required to achieve this point is ____________

In the Frank-Read dislocation source, if the distance between fixed points is L, then the minimum possible value of dislocation loop radius will be equal to__________

If there is no source of dislocation multiplication in metal, the cold work of metal will reduce the dislocation density of the given metal.

Which of the following is not a source of dislocation?

The metallic tiny whisker are _________

Is it possible to generate dislocation by thermal activation?

Edge dislocation moves slowly in a crystal compared to a screw dislocation of same burger vector.

The interaction of two screw dislocation produces ___________

The interaction of screw dislocation and edge dislocation produces ______ on the edge dislocation and _______ on the screw dislocation.

To produce the kink from intersection of two dislocations, the necessary condition is ____________

To produce the jog from the intersection of two dislocations, the necessary condition is ______

A ________ is a sharp break in the dislocation line by moving it out of the slip plane. A _______ is a sharp break in the dislocation line, but it remains in the slip plane.

The interaction of screw dislocation and edge dislocation produces on the edge dislocation and _ on the screw dislocation.

A __ is a sharp break in the dislocation line by moving it out of the slip plane. A _ is a sharp break in the dislocation line, but it remains in the slip plane.