MCQOPTIONS
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MCQOPTIONS
This section includes 15 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. |
WHAT_DOES_DAF_STAND_FOR??$ |
| A. | Dissolved aerobic floatation |
| B. | Dissolved air floatation |
| C. | Dissolved air filtration |
| D. | Deoxygenated anaerobic floatation |
| Answer» C. Dissolved air filtration | |
| 2. |
How many types of DAF are present?$ |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» B. 3 | |
| 3. |
How much time does the circular DAF need to complete the process?$ |
| A. | 2 minutes |
| B. | 3 minutes |
| C. | 4 minutes |
| D. | 5 minutes |
| Answer» C. 4 minutes | |
| 4. |
What is the tank water depth? |
| A. | 10” |
| B. | 15” |
| C. | 18” |
| D. | 22” |
| Answer» D. 22‚Äö√Ñ√∂‚àö√ë‚àöœÄ | |
| 5. |
What is the rotation time of the top bridge of DAF? |
| A. | 1 minute |
| B. | 2 minutes |
| C. | 3 minutes |
| D. | 4 minutes |
| Answer» D. 4 minutes | |
| 6. |
________ is called ‘zero speed’.$ |
| A. | Circular DAF |
| B. | Rectangular DAF |
| C. | DAF |
| D. | Pressure vessel |
| Answer» B. Rectangular DAF | |
| 7. |
Which of the following is not a coagulant? |
| A. | Ferric chloride |
| B. | Aluminium sulphate |
| C. | Aluminium phosphate |
| D. | Sulphuric acid |
| Answer» E. | |
| 8. |
The suspended particles sink to the bottom during the process? |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
The air is dissolved in water or wastewater by natural means. |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
________ is used to limit the cleaning of the screen. |
| A. | Screening devices |
| B. | Suction scanner |
| C. | Alarm systems |
| D. | Range systems |
| Answer» C. Alarm systems | |
| 11. |
Straining refers to the removal of smaller particles from a fluid. |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
The elements that cause a filter to loose hydraulic capacity are referred to as ______ |
| A. | Hydraulic factors |
| B. | Clogging factors |
| C. | Draining factors |
| D. | Filter factors |
| Answer» C. Draining factors | |
| 13. |
The total area of the filter is called effective filter media. |
| A. | True |
| B. | False |
| Answer» C. | |
| 14. |
The smallest particle size requiring removal from the fluid stream is called ______ |
| A. | Reduction |
| B. | Filtration degree |
| C. | Removal degree |
| D. | Fluidization |
| Answer» C. Removal degree | |
| 15. |
What is the size of ionic particles present in wastewater? |
| A. | < 0.1 micron |
| B. | 0.01 micron |
| C. | 0.001 micron |
| D. | 0.0001 micron |
| Answer» D. 0.0001 micron | |