MCQOPTIONS
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MCQOPTIONS
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. |
It is possible to have actual strain values more than one for some components and systems. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
The rate of strain hardening and strain hardening exponents in the flow curve is always the same. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
The true local necking strain is defined as __________ |
| A. | strain up to the failure point |
| B. | strain required up to maximum tensile strength point |
| C. | strain from tensile strength point to the failure point |
| D. | strain up to yield point |
| Answer» D. strain up to yield point | |
| 4. |
The total reduction in the area of the specimen is 0.5. Find the true fracture strain of the material? |
| A. | 1 |
| B. | 0.69 |
| C. | 1.33 |
| D. | 2 |
| Answer» C. 1.33 | |
| 5. |
The initial cross-sectional area of a rod is 500 m2 is reduced to 100 m2 at the breaking point. Calculate the true fracture strain of the material? |
| A. | 2 |
| B. | 5.02 |
| C. | 1.6 |
| D. | 0.5 |
| Answer» D. 0.5 | |
| 6. |
Which of the following has the highest toughness? |
| A. | High-carbon spring steel |
| B. | Medium carbon spring steel |
| C. | Stainless steel |
| D. | Cast iron |
| Answer» B. Medium carbon spring steel | |
| 7. |
The necessary property for the structural material is _________ |
| A. | high resilience |
| B. | high toughness |
| C. | low ductility |
| D. | low stiffness |
| Answer» C. low ductility | |
| 8. |
The Resilience is not equal to ____________Where; -is yield stress, e-strain, E-young s modulus |
| A. | 1/2* *e |
| B. | 1/2* <sup>2</sup>/e |
| C. | 1/2* <sup>2</sup>/E |
| D. | 1/2*E*e<sup>2</sup> |
| Answer» C. 1/2* <sup>2</sup>/E | |
| 9. |
The limit of elastic strain is 0.02 of the material having young s modulus 200 MPa. Find the resilience of the material? |
| A. | 10<sup>6</sup> |
| B. | 10 |
| C. | 2*10<sup>6</sup> |
| D. | 4*10<sup>6</sup> |
| Answer» D. 4*10<sup>6</sup> | |
| 10. |
The young modulus of the material is decided by the __________ |
| A. | the shape of the specimen |
| B. | size of the sample |
| C. | binding force between the atoms in the sample |
| D. | it does not depend on one factor |
| Answer» D. it does not depend on one factor | |