MCQOPTIONS
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MCQOPTIONS
This section includes 8 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. |
A screw-driven constant head velocity machine for tensile testing machine are _________ |
| A. | load controlled machine |
| B. | displacement controlled machine |
| C. | stress controlled machine |
| D. | modulus controlled machine |
| Answer» C. stress controlled machine | |
| 2. |
When the strain rate sensitivity is equal to 1. The cross-sectional area of sample will _________ on applying load. |
| A. | increase |
| B. | decrease |
| C. | remain constant |
| D. | no relationship |
| Answer» D. no relationship | |
| 3. |
The strain rate sensitivity in a Newtonian viscous solid is _______ |
| A. | 0 |
| B. | 1 |
| C. | 0.5 |
| D. | 0.1 |
| Answer» C. 0.5 | |
| 4. |
The strain rate sensitivity of metal is in the range of __________ at room temperature. |
| A. | 1-5 |
| B. | 5-10 |
| C. | <0.1 |
| D. | >0.5 |
| Answer» D. >0.5 | |
| 5. |
The relationship between the stress and strain rate is given as =C m, where m is strain rate sensitivity. The strain rate sensitivity _____________ with increase in temperature. |
| A. | increases |
| B. | decreases |
| C. | remains constant |
| D. | no relationship |
| Answer» B. decreases | |
| 6. |
The relationship between the flow stress and the strain rate is given in empirical form ______ where strain rate= , = flow stress, C & m = constant. |
| A. | =C |
| B. | =C <sup>m</sup> |
| C. | =C<sup>m</sup> |
| D. | =C/ |
| Answer» C. =C<sup>m</sup> | |
| 7. |
The homologous temperature is defined as of __________ |
| A. | melting point/test temperature |
| B. | test temperature/melting point |
| C. | 0.5 * melting |
| D. | 2*test temperature |
| Answer» C. 0.5 * melting | |
| 8. |
In the case of the FCC metal, the yield strength is more temperature-dependent than the tensile strength of the given metal. |
| A. | True |
| B. | False |
| Answer» C. | |