Materials Science Mock Test 5

10%

Question 1 of 10

1. How high can dislocation density of a material be when it is heavily deformed?

10¹² mm^-2

10⁹ mm^-2

10¹⁰ mm^-2

10¹¹ mm^-2

Question 1 of 10

Question 2 of 10

2. Value of critical resolved shear stress for a given material at a given temperature ______

Decreases harshly with time

Decreases with time

Increases with time

Remains constant

Question 2 of 10

Question 3 of 10

3. In strain hardening, there is an increase in density.

True

False

Question 3 of 10

Question 4 of 10

4. Which of the following is fields are not present for edge dislocation?

Compressive

Strain

Tensile

Shear stress

Question 4 of 10

Question 5 of 10

5. For which of the following design factor of safety the design will work properly?

0.9

0.1

Question 5 of 10

Question 6 of 10

6. Strain-relief crystallization takes place when deformed metals are heated.

False

True

Question 6 of 10

Question 7 of 10

7. In edge dislocation, a helical path is traced around the dislocation line.

True

False

Question 7 of 10

Question 8 of 10

8. Which of the following interactions will not continue to act at about 0.6Tm? (where Tm is melting point)

Elastic interaction

Electrical interaction

Modulus interaction

Long range interaction

Question 8 of 10

Question 9 of 10

9. Up till which point will a body regain its original shape?

Fracture limit

Ultimate tensile strength point

Yield point

Elastic limit

Question 9 of 10

Question 10 of 10

10. Slip plane along with the direction of slip is called a slip system.

False

True

Question 10 of 10