MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Powder Metallurgy knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The greater the ______ more will be the driving force for the liquid flow stage in the liquid phase sintering. |
| A. | Wetting |
| B. | Temperature |
| C. | Pressure |
| D. | Diffusion |
| Answer» B. Temperature | |
| 2. |
Liquid phase sintering is advantageous over solid phase sintering due to ______ |
| A. | Temperature |
| B. | Microstructure |
| C. | Kinetics |
| D. | Economy |
| Answer» D. Economy | |
| 3. |
______ amount of liquid phase must be present to penetrate the adjoining grains. |
| A. | Minimum |
| B. | Sufficient |
| C. | Maximum |
| D. | Unlimited |
| Answer» C. Maximum | |
| 4. |
In liquid phase sintering, ______ stresses are developed at the contact point of two particles when the dihedral angle is zero. |
| A. | Bending |
| B. | Shear |
| C. | Tensile |
| D. | Compressive |
| Answer» E. | |
| 5. |
______ dihedral angle, will hinder further densification. |
| A. | Negative |
| B. | Zero |
| C. | Positive |
| D. | Infinite |
| Answer» D. Infinite | |
| 6. |
Initial particle size must be small for liquid phase sintering. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
For liquid phase to sinter successfully, the contact angle should be _______ |
| A. | more than 90 |
| B. | less than 90 |
| C. | equal to 90 |
| D. | equal to 0 |
| Answer» C. equal to 90 | |
| 8. |
Which of the following condition should be satisfied for complete penetration of liquid into the grain boundaries? |
| A. | <sub>GS</sub> < 0.5 <sub>GB</sub> |
| B. | <sub>LG</sub> < 0.5 <sub>GB</sub> |
| C. | <sub>GB</sub> < 0.5 <sub>LS</sub> |
| D. | <sub>LS</sub> < 0.5 <sub>GB</sub> |
| Answer» E. | |