From annihilation of dislocations, total energy of system _____

first increases and then decreases

The nature of the interaction of dislocations doesn t depend on _____

relative position of dislocations

The force of attraction or repulsion _____ with decreasing distance of separation.

first increases and then decreases

Explore topic-wise MCQs in Mechanical Behaviour.

This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Behaviour knowledge and support exam preparation. Choose a topic below to get started.

1.	The nature of force between dislocations depends on the relative position of dislocations.
A.	True
B.	False
Answer» B. False

Discussion

2.	Screw dislocations of opposite sign having same Burgers vector ____ each other and two parallel edge dislocations of same sign on same plane ____ each other.
A.	attract, attract
B.	attract, repel
C.	repel, attract
D.	repel, repel
Answer» C. repel, attract

Discussion

3.	From annihilation of dislocations, total energy of system _____
A.	increases
B.	decreases
C.	remains constant
D.	first increases and then decreases
Answer» C. remains constant

Discussion

4.	Screw dislocations always attract each other.
A.	True
B.	False
Answer» C.

Discussion

5.	What is the ratio of elastic strain energies, when two parallel edge dislocations of same sign on the same plane are separated farther apart to when they are very close together?
A.	1:1
B.	1:2
C.	2:3
D.	2:1
Answer» C. 2:3

Discussion

6.	Annihilation due to the attraction between dislocations lying on parallel slip plane gives either ____ or _____
A.	void, interstitialcy
B.	pore, interstitialcy
C.	interstitialcy, vacancy row
D.	crack, vacancy row
Answer» D. crack, vacancy row

Discussion

7.	The nature of the interaction of dislocations doesn t depend on _____
A.	relative position of dislocations
B.	burgers vector
C.	character of dislocations
D.	source of dislocation
Answer» E.

Discussion

8.	Edge dislocations have _____ stress field therefore _____ interactions can occur between parallel edge dislocations.
A.	symmetrical, a number of
B.	symmetrical, less number of
C.	unsymmetrical, a number of
D.	unsymmetrical, less number of
Answer» D. unsymmetrical, less number of

Discussion

9.	Attraction force between dislocations of opposite sign is _____
A.	b
B.	b<sup>1/2</sup>
C.	b<sup>2</sup>
D.	b<sup>3</sup>
Answer» D. b<sup>3</sup>

Discussion

10.	The force of attraction or repulsion _____ with decreasing distance of separation.
A.	increases
B.	decreases
C.	remains constant
D.	first increases and then decreases
Answer» B. decreases

Discussion

11.	Dislocations of opposite sign on the _____ slip plane will _____ each other.
A.	same, attract
B.	same, repel
C.	different, attract
D.	different, repel
Answer» B. same, repel

Discussion

Explore topic-wise MCQs in Mechanical Behaviour.

The nature of force between dislocations depends on the relative position of dislocations.

Screw dislocations of opposite sign having same Burgers vector each other and two parallel edge dislocations of same sign on same plane each other.

From annihilation of dislocations, total energy of system _____

Screw dislocations always attract each other.

What is the ratio of elastic strain energies, when two parallel edge dislocations of same sign on the same plane are separated farther apart to when they are very close together?

Annihilation due to the attraction between dislocations lying on parallel slip plane gives either or _

The nature of the interaction of dislocations doesn t depend on _____

Edge dislocations have _ stress field therefore _ interactions can occur between parallel edge dislocations.

Attraction force between dislocations of opposite sign is _____

The force of attraction or repulsion _____ with decreasing distance of separation.

Dislocations of opposite sign on the _ slip plane will _ each other.

Explore topic-wise MCQs in Mechanical Behaviour.

The nature of force between dislocations depends on the relative position of dislocations.

Screw dislocations of opposite sign having same Burgers vector ____ each other and two parallel edge dislocations of same sign on same plane ____ each other.

From annihilation of dislocations, total energy of system _____

Screw dislocations always attract each other.

What is the ratio of elastic strain energies, when two parallel edge dislocations of same sign on the same plane are separated farther apart to when they are very close together?

Annihilation due to the attraction between dislocations lying on parallel slip plane gives either ____ or _____

The nature of the interaction of dislocations doesn t depend on _____

Edge dislocations have _____ stress field therefore _____ interactions can occur between parallel edge dislocations.

Attraction force between dislocations of opposite sign is _____

The force of attraction or repulsion _____ with decreasing distance of separation.

Dislocations of opposite sign on the _____ slip plane will _____ each other.

Screw dislocations of opposite sign having same Burgers vector each other and two parallel edge dislocations of same sign on same plane each other.

Annihilation due to the attraction between dislocations lying on parallel slip plane gives either or _

Edge dislocations have _ stress field therefore _ interactions can occur between parallel edge dislocations.

Dislocations of opposite sign on the _ slip plane will _ each other.