MCQOPTIONS
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MCQOPTIONS
This section includes 13 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 below figure represents the relative size distribution graph. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
________ is the particle size through square grid method where magnification of the objective is x10. a) 0.259 mmb) 0.282 mmc) 0.156 mmd) 2.963 mms 13.________ is the particle size through linear/ horizontal scale method where magnification of the objective is x10. |
| A. | 0.259 mmb) 0.282 mmc) 0.156 mmd) 2.963 mms 13.________ is the particle size through linear/ horizontal scale method where magnification of the objective is x10.a) 0.21mm |
| B. | 0.282 mmc) 0.156 mmd) 2.963 mms 13.________ is the particle size through linear/ horizontal scale method where magnification of the objective is x10.a) 0.21mmb) 2.10mm |
| C. | 0.156 mmd) 2.963 mms 13.________ is the particle size through linear/ horizontal scale method where magnification of the objective is x10.a) 0.21mmb) 2.10mmc) 0.20mm |
| D. | 2.963 mms 13.________ is the particle size through linear/ horizontal scale method where magnification of the objective is x10.a) 0.21mmb) 2.10mmc) 0.20mmd) 0.22mmView Answer |
| Answer» C. 0.156 mmd) 2.963 mms 13.________ is the particle size through linear/ horizontal scale method where magnification of the objective is x10.a) 0.21mmb) 2.10mmc) 0.20mm | |
| 3. |
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 | |
| 4. |
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 | |
| 5. |
_______ 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 | |
| 6. |
_______ 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 | |
| 7. |
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 | |
| 8. |
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 | |
| 9. |
____ 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 | |
| 10. |
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 | |
| 11. |
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 | |
| 12. |
Reynold number can be expressed as R=Vdρf/η. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
Stoke’s law can be represented by which of the following equation? |
| A. | V=(ρp – ρf)d3g/18η |
| B. | V=(ρp – ρf)d2g/18η |
| C. | V=(ρf – ρp)d2g/18η |
| D. | V=(ρp – ρf)d2/18ηg |
| Answer» C. V=(ρf – ρp)d2g/18η | |