MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 22 Mcqs, each offering curated multiple-choice questions to sharpen your Waste Water Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
For a high rate filter calculate the diameter of the filter required for a flow of water of 200 m3/h. |
| A. | 7.2m |
| B. | 8.4 m |
| C. | 14 m |
| D. | 13 m |
| Answer» B. 8.4 m | |
| 2. |
Which of these has been used as a medium for high rate filtration? |
| A. | Polyvaniladene |
| B. | Polypropylene |
| C. | Polyacetylene |
| D. | Polyvinyl |
| Answer» B. Polypropylene | |
| 3. |
Which of these does high rate filters not remove? |
| A. | Phosphorous |
| B. | Suspended Solids |
| C. | Colloidal Solids |
| D. | Organic matter(particulat |
| Answer» E. | |
| 4. |
What is the percentage of wash water? |
| A. | >5% |
| B. | >3% |
| C. | >2% |
| D. | <2% |
| Answer» E. | |
| 5. |
What is the life of the media used? |
| A. | 2 years |
| B. | 5 years |
| C. | 8 years |
| D. | 10 years |
| Answer» E. | |
| 6. |
As the compression increases, the porosity in filter bed _____ |
| A. | Increases |
| B. | Decreases |
| C. | Remains constant |
| D. | Alters |
| Answer» C. Remains constant | |
| 7. |
WHAT_IS_THE_LIFE_OF_THE_MEDIA_USED??$ |
| A. | 2 years |
| B. | 5 years |
| C. | 8 years |
| D. | 10 years |
| Answer» E. | |
| 8. |
Which of these does high rate filters not remove?$ |
| A. | Phosphorous |
| B. | Suspended Solids |
| C. | Colloidal Solids |
| D. | Organic matter(particulate) |
| Answer» E. | |
| 9. |
What_is_the_percentage_of_wash_water?$ |
| A. | >5% |
| B. | >3% |
| C. | >2% |
| D. | <2% |
| Answer» E. | |
| 10. |
What is the bed depth of the sand considered in such rapid filters? |
| A. | 500 mm |
| B. | 200- 400 mm |
| C. | 600-760 mm |
| D. | 900- 1000 mm |
| Answer» D. 900- 1000 mm | |
| 11. |
For a high rate filter calculate the diameter of the filter required for a flow of water of 200 m3/h. |
| A. | 7.2m |
| B. | 8.4 m |
| C. | 14 m |
| D. | 13 m |
| Answer» B. 8.4 m | |
| 12. |
While designing a high rate filter what would be the velocity assumed? |
| A. | 12m/h |
| B. | 18 m/h |
| C. | 7 m/h |
| D. | 5 m/h |
| Answer» E. | |
| 13. |
What is the porosity of these synthetic media? |
| A. | 90-92% |
| B. | 92-94% |
| C. | 88-90% |
| D. | 94-96% |
| Answer» D. 94-96% | |
| 14. |
Which_of_these_has_been_used_as_a_medium_for_high_rate_filtration? |
| A. | Polyvaniladene |
| B. | Polypropylene |
| C. | Polyacetylene |
| D. | Polyvinyl |
| Answer» B. Polypropylene | |
| 15. |
As the compression increases, the porosity in filter bed ____? |
| A. | Increases |
| B. | Decreases |
| C. | Remains constant |
| D. | Alters |
| Answer» C. Remains constant | |
| 16. |
Which of the following is not true in case of closing the top of the vessel? |
| A. | Keeps out sunlight |
| B. | Limits algal growth |
| C. | Restricts bug access |
| D. | Eliminates odour |
| Answer» E. | |
| 17. |
The synthetic fibres used are temperature resistant. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 18. |
What is the void ratio of filter media? |
| A. | 60-65 % |
| B. | 65-70 % |
| C. | 75-80 % |
| D. | 80-85 % |
| Answer» E. | |
| 19. |
________ is shifted to keep an ample space for filtering media to rotate. |
| A. | Drain |
| B. | Movable plate |
| C. | Perforated plate |
| D. | Cylinder |
| Answer» C. Perforated plate | |
| 20. |
Filter cycle is interrupted for ______ |
| A. | Air washing |
| B. | Back washing |
| C. | Adding influent |
| D. | Removing effluent |
| Answer» B. Back washing | |
| 21. |
What is the filter media made of? |
| A. | Cotton |
| B. | Synthetic fibre |
| C. | Geotextiles |
| D. | Plastic |
| Answer» C. Geotextiles | |
| 22. |
High rate filtrations cannot be used for wet weather conditions. |
| A. | True |
| B. | False |
| Answer» B. False | |