McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Civil Engineering .
| 151. |
If the sand filled behind the retaining wall with saturated water with water, then the possible lateral pressure is |
| A. | lateral pressure due to submerged weight and lateral pressure due to water |
| B. | lateral pressure due to retaining wall |
| C. | none of the mentioned |
| D. | all of the mentioned |
| Answer» A. lateral pressure due to submerged weight and lateral pressure due to water | |
| 152. |
The earth pressure at rest exerted on a retaining structure can be calculated using |
| A. | theory of plasticity |
| B. | theory of elasticity |
| C. | mohr’s theory of rupture |
| D. | none of the mentioned |
| Answer» B. theory of elasticity | |
| 153. |
Explanation: The earth pressure at rest, exerted on the back of the rigid, unyielding retaining structure, can be calculated using theory of elasticity. |
| A. | 0.6 |
| B. | 0.5 |
| C. | 0.4 |
| D. | 0.8 |
| Answer» C. 0.4 | |
| 154. |
The expression for K0 as given by Jacky is |
| A. | k0 = 1 – sin φ |
| B. | k0 = sin φ |
| C. | k0 = 1 – cos φ |
| D. | k0 = 1 + sin φ |
| Answer» A. k0 = 1 – sin φ | |
| 155. |
What will be the coefficient of earth pressure at rest for a rigid retaining wall, If the backfill consists of cohesion less soil having φ = 26°? |
| A. | 0.1295 |
| B. | 0.6552 |
| C. | 0.5616 |
| D. | 0.7383 |
| Answer» C. 0.5616 | |
| 156. |
The wedge theory of earth pressure is based on the concept of |
| A. | active earth pressure |
| B. | sliding wedge |
| C. | wall friction |
| D. | all of the mentioned |
| Answer» B. sliding wedge | |
| 157. |
Which of the following is a basic assumption of the wedge theory? |
| A. | the slip surface is plane |
| B. | the backfill is dry |
| C. | the backfill is homogeneous |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 158. |
The active lateral pressure of intact saturated clays is calculated by assuming |
| A. | φ=0 and φc=0 |
| B. | φ=90 |
| C. | none of the mentioned |
| D. | all of the mentioned |
| Answer» A. φ=0 and φc=0 | |
| 159. |
The forces acting on the trial wedge which is used for finding Rankine’s active earth pressure is |
| A. | weight w of the wedge |
| B. | resultant force |
| C. | resultant reaction between wedge and sol |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 160. |
In Coulomb’s wedge theory, the angle λ is referred as |
| A. | angle of wall friction |
| B. | surcharge angle |
| C. | critical slip angle |
| D. | none of the mentioned |
| Answer» C. critical slip angle | |
| 161. |
The φ-line in wedge theory can also be called as |
| A. | surcharge line |
| B. | natural slope line and repose line |
| C. | none of the mentioned |
| D. | all of the mentioned |
| Answer» B. natural slope line and repose line | |
| 162. |
The Belli equation at the ground surface is given by |
| A. | pa=γzcot2 α-2c cotα |
| B. | pa=γzcot2 α+2c cotα |
| C. | pa=-2c cotα |
| D. | pa=γzcot2 α/2c cotα |
| Answer» C. pa=-2c cotα | |
| 163. |
The effect of cohesion in the soil is to |
| A. | reduce pressure intensity |
| B. | increase pressure intensity by 3 |
| C. | double the pressure intensity |
| D. | increase pressure intensity by 4 |
| Answer» A. reduce pressure intensity | |
| 164. |
wall to a depth Zo in cohesive soils, then the total net pressure is zero for a depth of |
| A. | 2zo |
| B. | 3zo |
| C. | 4zo |
| D. | 5zo |
| Answer» A. 2zo | |
| 165. |
For an inclined back and surcharge, if P1, is horizontal pressure and W is weight of soil wedge, then the total pressure is given by |
| A. | p=p1+w |
| B. | p = √p 2 + w 2 |
| C. | p=(p1+w)2 |
| D. | p=p1-w |
| Answer» B. p = √p 2 + w 2 | |
| 166. |
The lateral pressure for cohesive backfill with surcharge q is |
| A. | pa=γzcot2 α-2c cotα+qcot2 α |
| B. | pa=γzcot2 α+2c cotα+cot2α |
| C. | pa=-2c cotα-cot2 α |
| D. | pa=γzcot2 α/2c cotα |
| Answer» A. pa=γzcot2 α-2c cotα+qcot2 α | |
| 167. |
Rebhann’s graphical method can be used for the location of |
| A. | slip plane and total active earth pressure |
| B. | passive earth pressure |
| C. | none of the mentioned |
| D. | all of the mentioned |
| Answer» A. slip plane and total active earth pressure | |
| 168. |
Culmann’s solution can be conveniently used for |
| A. | various type of surcharge loads |
| B. | ground surface of any shape |
| C. | backfill of different densities |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 169. |
theory. |
| A. | coulomb’s |
| B. | rebhann’s |
| C. | mohr |
| D. | rankine’s |
| Answer» A. coulomb’s | |
| 170. |
Which of the following effect of line load can be taken into account by Culmann’s graphical method? |
| A. | railway track and long wall of a building |
| B. | road alignment |
| C. | none of the mentioned |
| D. | all of the mentioned |
| Answer» A. railway track and long wall of a building | |
| 171. |
Earth pressure for retaining walls, of less than 6m are obtained by |
| A. | analytical method |
| B. | graphical method |
| C. | considering approximate value |
| D. | all of the mentioned |
| Answer» B. graphical method | |
| 172. |
All available graphs and tables, used for finding earth pressure is based on |
| A. | rankine’s theory |
| B. | coulomb’s theory |
| C. | culmann’s theory |
| D. | rebhann’s graphical method |
| Answer» A. rankine’s theory | |
| 173. |
Which of the following is not one of the criteria, for design of gravity dam? |
| A. | the wall must be safe against sliding |
| B. | the wall must be safe against overturning |
| C. | the wall must be thinner in section |
| D. | no tension should be developed in the wall |
| Answer» C. the wall must be thinner in section | |
| 174. |
For the design of gravity dam, the minimum value of F(factor of safety) against sliding should be |
| A. | 2.0 |
| B. | 1.5 |
| C. | 0.5 |
| D. | 4.0 |
| Answer» B. 1.5 | |
| 175. |
The load carrying capacity of a pile can be determined by which of the following methods? |
| A. | dynamic formulae |
| B. | static formulae |
| C. | plate load test |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 176. |
type of soil. |
| A. | fine grained soil |
| B. | coarse grained soil |
| C. | cohesive soil |
| D. | none of the mentioned |
| Answer» B. coarse grained soil | |
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