MCQOPTIONS
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MCQOPTIONS
This section includes 11 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 most suitable instrument for fractography is _________ |
| A. | SEM |
| B. | TEM |
| C. | XRD |
| D. | AFM |
| Answer» B. TEM | |
| 2. |
Which of the following steel will have the highest strength? (Given that the initial composition of raw material is the same for all). |
| A. | Vacuum furnace melted steel |
| B. | Induction furnace melted steel |
| C. | Muffle furnace melted steel |
| D. | Tube furnace melted steel |
| Answer» B. Induction furnace melted steel | |
| 3. |
Which of the following inclusion is most severe for the metal? |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» D. D | |
| 4. |
The formation of microcracks in metal can occur due to _________ |
| A. | inclusion |
| B. | solute atom |
| C. | dislocation |
| D. | vacancy |
| Answer» B. solute atom | |
| 5. |
What is the temperature over which ductile material converts into a brittle material? |
| A. | 100° |
| B. | 10° |
| C. | 50° |
| D. | 2° |
| Answer» E. | |
| 6. |
The mode of fracture is more temperature-dependent in FCC material than in BCC material. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
For ductile material, best way to predict the failure in stress is by examining __________ |
| A. | critical resolved shear stress |
| B. | critical resolved normal stress |
| C. | uniaxial tensile stress |
| D. | uniaxial shear stress |
| Answer» B. critical resolved normal stress | |
| 8. |
The FCC material’s usual mode of fracture is necked down to a point before rupture. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
For the given component the critical resolved shear stress will be equal to _________Given that the load applied is equal to P and the normal and shear angle with loading directions are θ and λ.a) P/Ab) P*cosθc) (P/A)*cosλ*cosθd) (P/ |
| A. | P/A |
| B. | P*cosθ |
| C. | (P/A)*cosλ*cosθ |
| D. | (P/A)*cosθ2 |
| Answer» D. (P/A)*cosθ2 | |
| 10. |
For the given component, the critical resolved normal stress will be equal to _________ given that the load applied is equal to P and the normal and shear angle with loading directions are θ and λ.a) P/Ab) P*cosθc) (P/A)*cosλ*cosθd) (P/ |
| A. | P/A |
| B. | P*cosθ |
| C. | (P/A)*cosλ*cosθ |
| D. | (P/A)*cosθ2 |
| Answer» E. | |
| 11. |
The brittle fracture of single crystal is related with __________________ on the cleavage plane. |
| A. | critical resolved shear stress |
| B. | critical resolved normal stress |
| C. | uniaxial tensile stress |
| D. | uniaxial shear stress |
| Answer» C. uniaxial tensile stress | |