 
			 
			MCQOPTIONS
 Saved Bookmarks
				This section includes 10 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. | In the case of plane strain, the relationship between the fracture toughness and crack extension force is given as _______ (where K is the fracture toughness, δ is the crack extension force, ν is the poison’s ratio, and E is the young’s modulus). | 
| A. | K=δE | 
| B. | K2=δE/(1-ν2) | 
| C. | K=(δE)/ν | 
| D. | K=δ/E | 
| Answer» C. K=(δE)/ν | |
| 2. | In the case of plane stress, the relationship between the fracture toughness and crack extension force is given as _______ (where K is the fracture toughness, δ is the crack extension force, and E is the young’s modulus). | 
| A. | K=δE | 
| B. | K2=δE | 
| C. | K=(δE)2 | 
| D. | K=δ/E | 
| Answer» C. K=(δE)2 | |
| 3. | The plane-strain value of critical stress intensity factor KIc is independent of the specimen thickness and describes the fracture toughness of the durable material. Here, in the KIc the I represents _____ | 
| A. | mode of fracture | 
| B. | number of stress state | 
| C. | number of strain state | 
| D. | the magnitude of fracture toughness | 
| Answer» B. number of stress state | |
| 4. | In the Crack Opening Mode-I, the extreme case is the thick plate which shows the condition of ____________ | 
| A. | plane stress | 
| B. | plane strain | 
| C. | uniaxial stress | 
| D. | uniaxial strain | 
| Answer» C. uniaxial stress | |
| 5. | In the Crack opening Mode-I, the extreme case is the thin plate which shows the condition of ____________ | 
| A. | plane stress | 
| B. | plane strain | 
| C. | uniaxial stress | 
| D. | uniaxial strain | 
| Answer» B. plane strain | |
| 6. | The following diagram shows crack deformation mode. Which mode of fracture is shown? | 
| A. | Mode-I | 
| B. | Mode-II | 
| C. | Mode-III | 
| D. | Need more information | 
| Answer» B. Mode-II | |
| 7. | In determining the fracture toughness, the Mode-III is defined as the _____________ | 
| A. | crack opening mode | 
| B. | forward shear mode | 
| C. | parallel shear mode | 
| D. | perpendicular shear mode | 
| Answer» D. perpendicular shear mode | |
| 8. | In determining the fracture toughness, the Mode-II is defined as the _____________ | 
| A. | crack opening mode | 
| B. | forward shear mode | 
| C. | parallel shear mode | 
| D. | perpendicular shear mode | 
| Answer» C. parallel shear mode | |
| 9. | In determining the fracture toughness, the Mode-I is defined as _____________ | 
| A. | crack opening mode | 
| B. | forward shear mode | 
| C. | parallel shear mode | 
| D. | perpendicular shear mode | 
| Answer» B. forward shear mode | |
| 10. | The value of the geometric parameter for a plate of width w loaded in tension with the centrally loaded crack of the length 2a __________ | 
| A. | [w/2π tan(πa/w)]1/2 | 
| B. | [wtan(πa/w)]1/2 | 
| C. | [w/2π tan(πa/w)] | 
| D. | [w/2π] | 
| Answer» B. [wtan(πa/w)]1/2 | |