Two edge dislocation of opposite sign lies in parallel slip angle with an angle of 55 degrees with each other. What will the nature of force between these two dislocations?

Neither attractive nor repulsive

Cannot predict with given information

Two edge dislocation of same sign lies in parallel slip angle with an angle of 30 degrees with each other. What will the nature of force between these two dislocations?

Neither attractive nor repulsive

Cannot predict with given information

It is commonly observed that climb generate jog in dislocation line because ________

a jog is a form of dislocation climb

dislocation climb creates stress in dislocation line to bend it

the extra plane of atoms is highly unlikely to remove from the entire width of dislocation

a jog is a form of dislocation climb

The dislocation climb is least affected by ___________

movement of the atom to dislocation

movement of vacancy to the dislocation

Which of the following is a non-conservative type of movement of dislocation?

The glide of positive edge dislocation on the slip plane

The glide of positive screw dislocation on the slip plane

The climb of an edge dislocation

Explore topic-wise MCQs in Mechanical Metallurgy.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Metallurgy knowledge and support exam preparation. Choose a topic below to get started.

1.	Two edge dislocation of opposite sign lies in parallel slip angle with an angle of 55 degrees with each other. What will the nature of force between these two dislocations?
A.	Attractive
B.	Repulsive
C.	Neither attractive nor repulsive
D.	Cannot predict with given information
Answer» C. Neither attractive nor repulsive

Discussion

2.	Two edge dislocation of same sign lies in parallel slip angle with an angle of 30 degrees with each other. What will the nature of force between these two dislocations?
A.	Attractive
B.	Repulsive
C.	Neither attractive nor repulsive
D.	Cannot predict with given information
Answer» C. Neither attractive nor repulsive

Discussion

3.	No Diffusion of atom is needed to allow ____________ to move from one plane to another plane.
A.	edge dislocation
B.	screw dislocation
C.	jog
D.	kink
Answer» C. jog

Discussion

4.	Dislocation climb is temperature dependent phenomena and present in both edge and screw dislocation.
A.	True
B.	False
Answer» C.

Discussion

5.	The activation for the climb is equal to _____where;Uj = Activation for nucleation of jogUv = Activation for formation of the vacancyUm = Activation for formation of the self diffusionUi = Activation for formation of the interstitial diffusion
A.	Uj+Uv+Um
B.	Uj
C.	Uj+Uv
D.	Uj+Uv+Um+Ui
Answer» B. Uj

Discussion

6.	It is commonly observed that climb generate jog in dislocation line because ________
A.	dislocation climb creates stress in dislocation line to bend it
B.	the extra plane of atoms is highly unlikely to remove from the entire width of dislocation
C.	a jog is a form of dislocation climb
D.	statement is incorrect
Answer» C. a jog is a form of dislocation climb

Discussion

7.	The dislocation climb is least affected by ___________
A.	movement of the atom to dislocation
B.	movement of vacancy to the dislocation
C.	shear stress
D.	high Temperature
Answer» D. high Temperature

Discussion

8.	Which of the following is a non-conservative type of movement of dislocation?
A.	The glide of positive edge dislocation on the slip plane
B.	The glide of positive edge dislocation on the slip plane
C.	The glide of positive screw dislocation on the slip plane
D.	The climb of an edge dislocation
Answer» E.

Discussion

9.	A dislocation always feels the attractive force from the surface of the material.
A.	True
B.	False
Answer» C.

Discussion

10.	The stacking fault energy of aluminium is 200 mJ m-2. Find the equilibrium spacing between partial dislocation of aluminium. If the shear modulus of the material is 27 GPa and lattice parameter is 3.57 A°.
A.	20 A°
B.	1000 A°
C.	1 A°
D.	20 micron
Answer» B. 1000 A°

Discussion

Explore topic-wise MCQs in Mechanical Metallurgy.

Two edge dislocation of opposite sign lies in parallel slip angle with an angle of 55 degrees with each other. What will the nature of force between these two dislocations?

Two edge dislocation of same sign lies in parallel slip angle with an angle of 30 degrees with each other. What will the nature of force between these two dislocations?

No Diffusion of atom is needed to allow ____________ to move from one plane to another plane.

Dislocation climb is temperature dependent phenomena and present in both edge and screw dislocation.

The activation for the climb is equal to _____where;Uj = Activation for nucleation of jogUv = Activation for formation of the vacancyUm = Activation for formation of the self diffusionUi = Activation for formation of the interstitial diffusion

It is commonly observed that climb generate jog in dislocation line because ________

The dislocation climb is least affected by ___________

Which of the following is a non-conservative type of movement of dislocation?

A dislocation always feels the attractive force from the surface of the material.

The stacking fault energy of aluminium is 200 mJ m-2. Find the equilibrium spacing between partial dislocation of aluminium. If the shear modulus of the material is 27 GPa and lattice parameter is 3.57 A°.