MCQOPTIONS
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MCQOPTIONS
This section includes 17 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. |
Calculate the area of the tube settlers for the given data:Flow: 1500 mm3/hSurface loading rate: 7 m2/m3/h |
| A. | 215 m2 |
| B. | 300 m2 |
| C. | 400 m2 |
| D. | 500 m2 |
| Answer» B. 300 m2 | |
| 2. |
What is the mathematical representation when many plates are used? |
| A. | V=Q/Nwb |
| B. | V= Q x Nwb |
| C. | V= Q/Nw |
| D. | V=Q x Nw |
| Answer» B. V= Q x Nwb | |
| 3. |
Tube settlers are operated in which mode? |
| A. | Concurrent |
| B. | Countercurrent |
| C. | Cross flow |
| D. | Hindered settling |
| Answer» C. Cross flow | |
| 4. |
What is the nominal spacing between the plates? |
| A. | 1 inch |
| B. | 2 inch |
| C. | 3 inch |
| D. | 4 inch |
| Answer» C. 3 inch | |
| 5. |
WHAT_IS_THE_NOMINAL_SPACING_BETWEEN_THE_PLATES??$ |
| A. | 1 inch |
| B. | 2 inch |
| C. | 3 inch |
| D. | 4 inch |
| Answer» C. 3 inch | |
| 6. |
What is the mathematical representation when many plates are used?$ |
| A. | V=Q/N<sub>wb</sub> |
| B. | V= Q x N<sub>wb</sub> |
| C. | V= Q/N<sub>w</sub> |
| D. | V=Q x N<sub>w</sub> |
| Answer» B. V= Q x N<sub>wb</sub> | |
| 7. |
Tube settlers are operated in which mode?$ |
| A. | Concurrent |
| B. | Countercurrent |
| C. | Cross flow |
| D. | Hindered settling |
| Answer» C. Cross flow | |
| 8. |
Calculate the area of the tube settlers for the given data: |
| A. | |
| B. | |
| Answer» B. | |
| 9. |
Which of these represent the settling velocity of tubesettlers? |
| A. | 11-15 m<sup>2</sup>/mm<sup>3</sup> |
| B. | 20-25 m<sup>2</sup>/mm<sup>2</sup> |
| C. | 40-45 m<sup>2</sup>/mm<sup>2</sup> |
| D. | 30-35 m<sup>2</sup>/mm<sup>2</sup> |
| Answer» B. 20-25 m<sup>2</sup>/mm<sup>2</sup> | |
| 10. |
What would happen if the tube settler is inclined at an angle lesser than 45 degrees? |
| A. | Solids will accumulate in the plates |
| B. | Efficiency Increases |
| C. | It becomes 100 percent efficient |
| D. | You don’t require a flocculator prior to it |
| Answer» B. Efficiency Increases | |
| 11. |
What would happen if the tube settler is inclined greater than 60 degrees? |
| A. | The efficiency will increase |
| B. | The efficiency will decrease |
| C. | Colour will be removed |
| D. | Odour will be removed |
| Answer» C. Colour will be removed | |
| 12. |
What is the angle at which a tube settler is usually inclined at? |
| A. | 45-60 degree |
| B. | 45 degree |
| C. | 60 degree |
| D. | >60 degree |
| Answer» B. 45 degree | |
| 13. |
The settling depth provided by tube settlers is _________ than the actual settling depth. |
| A. | Less |
| B. | Greater |
| C. | Equal |
| D. | Nearer |
| Answer» B. Greater | |
| 14. |
The fine flocs escape and cannot b captured by tube settlers. |
| A. | True |
| B. | False |
| Answer» C. | |
| 15. |
What is the angle of slope in tube settlers? |
| A. | 30Àö |
| B. | 60Àö |
| C. | 90Àö |
| D. | 180Àö |
| Answer» C. 90‚àö√Ñ‚àö‚àÇ | |
| 16. |
A floc particle must settle after agglomerating to form larger particles. |
| A. | True |
| B. | False |
| Answer» C. | |
| 17. |
Tube settlers are used to increase the settling capacity of ______ |
| A. | Flocculation unit |
| B. | Clarifier |
| C. | Sand filter bed |
| D. | Flash mixing unit |
| Answer» C. Sand filter bed | |