Materials Science Mock Test 5

10%

Question 1 of 10

1. In strain hardening, the body is plastically deformed.

True

False

Question 1 of 10

Question 2 of 10

2. Which of the following isn't a strengthening mechanism?

Solid solution strengthening

Grain size increment

Strain hardening

Grain size reduction

Question 2 of 10

Question 3 of 10

3. Which of the following is not a correct designation of impact strength?

KCW

KCT

KCV

KCU

Question 3 of 10

Question 4 of 10

4. How many slip systems are there in BCC lattice?

Question 4 of 10

Question 5 of 10

5. Which of the following is not improved by grain size reduction?

Elasticity

Hardness

strength

Toughness

Question 5 of 10

Question 6 of 10

6. Factor of safety is used to find out the reliability of the design.

True

False

Question 6 of 10

Question 7 of 10

7. At what angle are Hartmann lines inclined to the tensile axis?

20 degrees

45 degrees

30 degrees

15 degrees

Question 7 of 10

Question 8 of 10

8. Which of the following processes can be used to refine the grain structure?

Grain growth

Recovery

Recrystallization

Such a process does not exist.

Question 8 of 10

Question 9 of 10

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

10¹¹ mm^-2

10¹² mm^-2

10¹⁰ mm^-2

10⁹ mm^-2

Question 9 of 10

Question 10 of 10

10. When a material is plastically deformed at low temperature(around 25 degrees) relative to the melting temperature, which of the following change isn't observed?

Change in grain shape

Decrease in dislocation density

Strain hardening

Increase in dislocation density

Question 10 of 10