MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Compressive stresses don t make a serious problem when applied on brittle materials. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Orowan and Irwin theory is given for cracking in brittle materials. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
What does plastic deformation do on crack propagation? |
| A. | Lowers surface energy |
| B. | Sharpens the tip |
| C. | Reduces required work |
| D. | Increases concentration of stress |
| Answer» B. Sharpens the tip | |
| 4. |
Elastic strain energy ___ with increase in crack length. |
| A. | Increases |
| B. | Decreases |
| C. | Remains constant |
| D. | May increase or decrease |
| Answer» C. Remains constant | |
| 5. |
As length of crack increases, surface energy of crack ___ |
| A. | Increases |
| B. | Decreases |
| C. | Remains constant |
| D. | May increase or decrease |
| Answer» B. Decreases | |