MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 6 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. |
The hardness value of the metal ______________ with increase in the temperature. |
| A. | increases |
| B. | decreases |
| C. | remains constant |
| D. | no relationship |
| Answer» C. remains constant | |
| 2. |
For measuring the hardness of the cementite and ferrite in a pearlite colony individually, the Knoop hardness measurement is the best method. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
For the same long diagonal length of indenter of Vickers hardness and Knoop hardness, the Knoop hardness is how much percentage of the Vickers indenter? |
| A. | 50 % |
| B. | 15 % |
| C. | 75 % |
| D. | 100 % |
| Answer» C. 75 % | |
| 4. |
The Knoop hardness number(KHN) is defined as the applied load divided by the unrecovered projected area of the indentation. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
The shape of Knoop indenter is of ___________ |
| A. | rounded end tip |
| B. | square-based pyramid |
| C. | pyramid with major and minor diagonal |
| D. | pyramid with a rounded end |
| Answer» D. pyramid with a rounded end | |
| 6. |
If the hardness of the case carburized steel needs to be measured, the possible method to measure the hardness of the case will be _________ |
| A. | Rockwell |
| B. | Knoop |
| C. | Vickers |
| D. | Brinell |
| Answer» C. Vickers | |