MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Soil Mechanics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In electro-osmosis method, when direct current is applied to the electrodes, the soil water will _________ |
| A. | travel from positive electrode to negative electrode |
| B. | travel from negative electrode to positive electrode |
| C. | move towards the centre between the electrodes |
| D. | not be affected by the current |
| Answer» B. travel from negative electrode to positive electrode | |
| 2. |
In vacuum method, the vacuum drawn on the well-point stiffened the sub-soil to carry out excavations. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
The velocity of flow towards cathode in electro-osmosis method is given by _________ |
| A. | v<sub>e</sub>=k<sub>e</sub>+i<sub>e</sub> |
| B. | v<sub>e</sub>=k<sub>e</sub>/i<sub>e</sub> |
| C. | v<sub>e</sub>=k<sub>e</sub>-i<sub>e</sub> |
| D. | v<sub>e</sub>=k<sub>e</sub>+i<sub>e</sub> |
| Answer» D. v<sub>e</sub>=k<sub>e</sub>+i<sub>e</sub> | |
| 4. |
The electro-osmosis method of dewatering increases ______ |
| A. | consolidation |
| B. | shear strength |
| C. | both consolidation and shear strength |
| D. | water at anode |
| Answer» D. water at anode | |
| 5. |
The dewatering of soil by electro-osmosis was developed by ______ |
| A. | Darcy |
| B. | Khosla |
| C. | Poiseuille |
| D. | Casagrande |
| Answer» E. | |
| 6. |
The fine grained cohesive soils can be stabilised by ______ |
| A. | well point system |
| B. | ditches and sumps |
| C. | vacuum method |
| D. | electro-osmosis method |
| Answer» E. | |
| 7. |
In vacuum method, the ground surface is subjected to unbalanced atmospheric pressure. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
In vacuum method, the top of bore hole is sealed by __________ |
| A. | soil cement |
| B. | bentonite |
| C. | clay |
| D. | soil cement, bentonite and clay |
| Answer» E. | |
| 9. |
The suction head ____________ capillary head in vacuum method of dewatering. |
| A. | should be greater than |
| B. | should be less than |
| C. | should be equal to |
| D. | does not depend on |
| Answer» B. should be less than | |
| 10. |
For the use of vacuum method, the coefficient of permeability should be __________ |
| A. | greater than 10<sup>-3</sup>cm/s |
| B. | in the range 10<sup>-3</sup> to 10<sup>-5</sup>cm/s |
| C. | less than 10<sup>-5</sup>cm/s |
| D. | independent |
| Answer» C. less than 10<sup>-5</sup>cm/s | |
| 11. |
For the use of vacuum method, the D10 should be __________ |
| A. | 1mm |
| B. | more than 1mm |
| C. | more than 0.5mm |
| D. | less than 0.05mm |
| Answer» E. | |
| 12. |
For successful dewatering in fine, non-cohesive soils, _________ method is used. |
| A. | ditches and sumps |
| B. | electro-osmosis method |
| C. | well point system |
| D. | vacuum method |
| Answer» E. | |