MCQOPTIONS
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MCQOPTIONS
This section includes 11 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. |
In Tyler standard screen scale, sieve series having a ratio of ______ is used. |
| A. | ( sqrt{3} ) : 1 |
| B. | ( sqrt{2} ) : 1 |
| C. | ( sqrt{2} ) : 2 |
| D. | ( sqrt[4]{3} ) : 1 |
| Answer» C. ( sqrt{2} ) : 2 | |
| 2. |
The laboratory methods for sizing by _________ can be divided into fractionating and non-fractionation groups. |
| A. | Elutriation method |
| B. | Sedimentation method |
| C. | Adsorption method |
| D. | Permeability method |
| Answer» C. Adsorption method | |
| 3. |
_______ establishes the relationship between the settling velocity of falling particles and particle size. |
| A. | Hess law |
| B. | Continuity equation |
| C. | Stoke s law |
| D. | Bernoulli s equation |
| Answer» D. Bernoulli s equation | |
| 4. |
_______ is the statistical relation between amount and size. |
| A. | Particle size distribution |
| B. | Cumulative weight retained |
| C. | Particle size |
| D. | Packing density |
| Answer» B. Cumulative weight retained | |
| 5. |
The particle size measurement technique based on the settling velocity of particles in stationary fluid medium is called _____ |
| A. | Sedimentation Method |
| B. | Microscopic Method |
| C. | Elutriation Method |
| D. | Permeability Method |
| Answer» B. Microscopic Method | |
| 6. |
Which of the following are the techniques for particle size measurement? |
| A. | Macroscopic analysis |
| B. | Sieve analysis and Absorption method |
| C. | Sieve analysis, microscopic analysis, sedimentation method, and permeability method |
| D. | Filtration method and Sieve analysis |
| Answer» D. Filtration method and Sieve analysis | |
| 7. |
____ particles are smaller than 44-micron but greater than 1-micron aperture. |
| A. | Sieve |
| B. | Sub-sieve |
| C. | Sub-micron |
| D. | Ultra-fine |
| Answer» C. Sub-micron | |
| 8. |
Which system of sieves is used in Germany? |
| A. | DIN system |
| B. | B.S. system |
| C. | AFNOR system |
| D. | Tyler system |
| Answer» B. B.S. system | |
| 9. |
Which of the following is a fractionation method for sizing by sedimentation method? |
| A. | Hydrometer method |
| B. | Pipette method |
| C. | Sedimentation and decantation method |
| D. | Turbidimetry |
| Answer» D. Turbidimetry | |
| 10. |
Reynold number can be expressed as R=Vd f/ . |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
Stoke s law can be represented by which of the following equation? |
| A. | V=( <sub>p</sub> <sub>f</sub>)d<sup>3</sup>g/18 |
| B. | V=( <sub>p</sub> <sub>f</sub>)d<sup>2</sup>g/18 |
| C. | V=( <sub>f</sub> <sub>p</sub>)d<sup>2</sup>g/18 |
| D. | V=( <sub>p</sub> <sub>f</sub>)d<sup>2</sup>/18 g |
| Answer» C. V=( <sub>f</sub> <sub>p</sub>)d<sup>2</sup>g/18 | |