MCQOPTIONS
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MCQOPTIONS
This section includes 179 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Foundation knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
A ditch conduits can be installed in a __________ |
| A. | Shallow bedding |
| B. | Shallow ditch |
| C. | Narrow ditch |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 52. |
For a saturated clay of 20KN/m³ and cᵤ=24 kN/m², find the height of tension cracks. |
| A. | 2.4 m |
| B. | 6.9 m |
| C. | 3.5 m |
| D. | 1.7 m |
| Answer» B. 6.9 m | |
| 53. |
For a cohesive backfill with surcharge q, when at depth z₀, pₐ=0, then the depth z₀ is ___________ |
| A. | \(z_0=\frac{q-2c cotα}{γ} \) |
| B. | \(z_0=\frac{2c tanα}{γ}-\frac{q}{γ} \) |
| C. | \(z_0=\frac{2 cotα}{γ}+\frac{q}{γ} \) |
| D. | \(z_0=\frac{cotα}{γ}-\frac{q}{γ} \) |
| Answer» C. \(z_0=\frac{2 cotα}{γ}+\frac{q}{γ} \) | |
| 54. |
The resultant active pressure per unit length of wall for dry backfill with no surcharge acting at _________ above the base of wall. |
| A. | H/2 |
| B. | H |
| C. | H/6 |
| D. | H/3 |
| Answer» E. | |
| 55. |
The coefficient of active earth pressure is_______ than the coefficient of passive pressure. |
| A. | less than |
| B. | greater than |
| C. | equal to |
| D. | insufficient data |
| Answer» B. greater than | |
| 56. |
The coefficient of earth pressure at rest is given by _________ |
| A. | \(K_0=\frac{μ}{1-μ}\) |
| B. | \(K_0=\frac{μ}{1+μ}\) |
| C. | \(K_0=\frac{2μ}{1-μ}\) |
| D. | \(K_0=\frac{1}{1-μ}\) |
| Answer» B. \(K_0=\frac{μ}{1+μ}\) | |
| 57. |
For a submerged backfill, the active earth pressure is given by _________ |
| A. | pₐ=Kₐγ’z |
| B. | pₐ=Kₐγ’z-γwz |
| C. | pₐ=Kₐγ’z+γwz |
| D. | pₐ=Kₐγ’z*γwz |
| Answer» D. pₐ=Kₐγ’z*γwz | |
| 58. |
The total net pressure for a cohesive soil is given by ________ |
| A. | pₐ=\(\frac{1}{2}\) Kₐ γH² cot² α-2c cotα |
| B. | pₐ=γH²-2c cotα |
| C. | pₐ=Kₐ γH²-2c cotα |
| D. | pₐ=Kₐ H²-2c cotα |
| Answer» B. pₐ=γH²-2c cotα | |
| 59. |
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» C. Considering approximate value | |
| 60. |
The ratio between coefficients of passive and active earth pressure is __________ |
| A. | cot² \((45°+\frac{φ}{2})\) |
| B. | cos² \((45°+\frac{φ}{2})\) |
| C. | tan⁴ \((45°+\frac{φ}{2})\) |
| D. | sin² \((45°+\frac{φ}{2})\) |
| Answer» D. sin² \((45°+\frac{φ}{2})\) | |
| 61. |
The recommended value of settlement ratio for embankment, to use in design is __________ |
| A. | +0.5 |
| B. | +1.0 |
| C. | – 0.3 |
| D. | – 0.4 |
| Answer» C. – 0.3 | |
| 62. |
The depth at which the tension is zero for cohesive soils with retaining wall in terms Kₐ is _____ |
| A. | \(z_0=\frac{2cK_a}{γ} \) |
| B. | \(z_0=\frac{2c}{γ} \frac{1}{√K_a } \) |
| C. | \(z_0=\frac{2cK_a}{γ} \) |
| D. | \(z_0=\frac{2c}{γ}(\frac{1}{K_a}) \) |
| Answer» C. \(z_0=\frac{2cK_a}{γ} \) | |
| 63. |
The load on a negative conduit is given by the equation __________ |
| A. | Wc = Cn γ Bd |
| B. | Wc = Cn γ Bd2 |
| C. | Wc = γ Bd |
| D. | Wc = Cn Bd2 |
| Answer» C. Wc = γ Bd | |
| 64. |
The relation between Kₚ and Kₐ is _____________ |
| A. | Kₚ=Kₐ |
| B. | Kₚ=1+Kₐ |
| C. | Kₚ=1-Kₐ |
| D. | Kₚ=1/Kₐ |
| Answer» E. | |
| 65. |
The stress component which acts on any point in the surrounding material before the excavation of the shaft can be resolved into __________ parts. |
| A. | 3 |
| B. | 5 |
| C. | 2 |
| D. | 4 |
| Answer» B. 5 | |
| 66. |
The stress component at any point, after the excavation of the shaft, will be equal to ____________ |
| A. | σR = (σZ)1-(σZ)2 |
| B. | σZ = (σZ)1-(σZ)2 |
| C. | σϴ = (σϴ)1-(σϴ)2 |
| D. | σR = (σR)1-(σR)2 |
| Answer» C. σϴ = (σϴ)1-(σϴ)2 | |
| 67. |
If the cohesive backfill carries a surcharge of q per unit area, then the lateral pressure is increased by _________ |
| A. | Kₐ q |
| B. | q |
| C. | Kₐ |
| D. | Kₐ/q |
| Answer» B. q | |
| 68. |
At the ground surface, there will be no passive pressure in the case of cohesive backfill. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 69. |
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» D. 0.7383 | |
| 70. |
For an angle of internal friction of 30°, find the flow value Nφ |
| A. | 4 |
| B. | 10 |
| C. | 3 |
| D. | 0 |
| Answer» D. 0 | |
| 71. |
Compute the active pressure intensity when the backfill has unit weight of 18 KN/m³ and height of wall is 6 m. The angle of internal friction is 30°. |
| A. | 45 KN/m² |
| B. | 36 KN/m³ |
| C. | 87 KN/m² |
| D. | 27 KN/m² |
| Answer» C. 87 KN/m² | |
| 72. |
Which of the following conduit is installed in shallow bedding? |
| A. | Ditch conduits |
| B. | Positive projecting conduits |
| C. | Special conduits |
| D. | Negative projecting conduits |
| Answer» C. Special conduits | |
| 73. |
For backfill with sloping surface, the coefficient of active earth pressure is given by ______ |
| A. | \(K_a=\frac{\sqrt{cos^2 β-cos^2 φ}}{cosβ+\sqrt{cos^2 β-cos^2 φ}} \) |
| B. | \(K_a=\frac{cosβ+\sqrt{cos^2 β-cos^2 φ}}{cosβ-\sqrt{cos^2 β-cos^2 φ}} \) |
| C. | \(K_a=\frac{cosβ-\sqrt{cos^2 β-cos^2 φ}}{cosβ+\sqrt{cos^2 β-cos^2 φ}} \) |
| D. | \(K_a=cosβ\frac{cosβ-\sqrt{cos^2 β-cos^2 φ}}{cosβ+\sqrt{cos^2 β-cos^2 φ}} \) |
| Answer» E. | |
| 74. |
The critical height for an unsupported vertical cut in cohesive soil is given by _____________ |
| A. | \(H_c=\frac{q-2c cotα}{γ} \) |
| B. | \(H_c=\frac{4c tanα}{γ} \) |
| C. | \(H_c=\frac{4 cotα}{γ} \) |
| D. | \(H_c=\frac{cotα}{γ} \) |
| Answer» C. \(H_c=\frac{4 cotα}{γ} \) | |
| 75. |
When the surcharge angle β is reduced to zero, then the coefficient of passive earth pressure is ______ |
| A. | 1 |
| B. | \(\frac{1-sinφ}{1+sinφ} \) |
| C. | \(\frac{1+sinφ}{1-sinφ} \) |
| D. | 0 |
| Answer» D. 0 | |
| 76. |
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» B. Road alignment | |
| 77. |
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» E. | |
| 78. |
For a surcharge angle β, the passive earth pressure is __________ |
| A. | \(p_p=γz \frac{\sqrt{cos^2 β-cos^2 φ}}{cosβ+\sqrt{cos^2 β-cos^2 φ}} \) |
| B. | \(p_p=γz \frac{cosβ+\sqrt{cos^2 β-cos^2 φ}}{cosβ-\sqrt{cos^2 β-cos^2 φ}}\) |
| C. | \(p_p=γz \frac{cosβ-\sqrt{cos^2 β-cos^2 φ}}{cosβ+\sqrt{cos^2 β-cos^2 φ}}\) |
| D. | \(p_p=γzcosβ \frac{cosβ+\sqrt{cos^2 β-cos^2 φ}}{cosβ-\sqrt{cos^2 β-cos^2 φ}}\) |
| Answer» E. | |
| 79. |
If the plane of settlement does not fall within the embankment, then such a condition is called _________ |
| A. | Complete ditch condition and Complete project condition |
| B. | Incomplete ditch condition |
| C. | None of the mentioned |
| D. | All of the mentioned |
| Answer» B. Incomplete ditch condition | |
| 80. |
If a backfill has unit weight of 12 KN/m³ and the equivalent height of surcharge as 3m, then find the surcharge. |
| A. | 12 KN/m² |
| B. | 25 KN/m² |
| C. | 36 KN/m² |
| D. | 75 KN/m² |
| Answer» D. 75 KN/m² | |
| 81. |
When the height of retaining wall is 6m, then the distance of point of application of the resultant pressure from the base is ________ |
| A. | 10m |
| B. | 2m |
| C. | 3m |
| D. | 7m |
| Answer» C. 3m | |
| 82. |
The coefficient earth pressure at rest is _______________ |
| A. | less than coefficient of active pressure |
| B. | greater than coefficient of active pressure |
| C. | equal to coefficient of active pressure |
| D. | one |
| Answer» C. equal to coefficient of active pressure | |
| 83. |
In case of cohesive backfill, the total passive pressure is _________ |
| A. | pₚ=\(\frac{1}{2}\) Kₚ γH²+2cH tanα |
| B. | pₚ=γH²+2c tanα |
| C. | pₚ=Kₚ γH²-2c tanα |
| D. | pₚ=Kₚ H²-2c tanα |
| Answer» B. pₚ=γH²+2c tanα | |
| 84. |
For a cohesion less soil, the total passive pressure Pₚ at a depth H is ___________ |
| A. | pₚ=\(\frac{1}{2}\) Kₚ γH² |
| B. | pₚ=γH² |
| C. | pₚ=Kₚ γH² |
| D. | pₚ=Kₚ H² |
| Answer» B. pₚ=γH² | |
| 85. |
When the top tension portion of the wall in cohesive soil is neglected, the total lateral thrust is given by __________ |
| A. | pₐ=\(\frac{1}{2}\)Kₐ γH² cot² α-2c cotα |
| B. | pₐ=\(\frac{1}{2}\)Kₐ γH² cot² α-2c cotα+\(\frac{2c^2}{γ}\) |
| C. | pₐ=\(\frac{1}{2}\)Kₐ γH² cot² α-2c cotα-\(\frac{2c^2}{γ}\) |
| D. | pₐ=Kₐ H²-2c cotα |
| Answer» C. pₐ=\(\frac{1}{2}\)Kₐ γH² cot² α-2c cotα-\(\frac{2c^2}{γ}\) | |
| 86. |
Terzaghi’s experiment show that the value of K (empirical constant) varies from about ________ above the Centre of strip. |
| A. | Unity |
| B. | Zero |
| C. | Less than unity |
| D. | None of the mentioned |
| Answer» B. Zero | |
| 87. |
Both the projection condition and the ditch conditions of a positive projecting conduit may be __________ |
| A. | Complete |
| B. | Incomplete |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 88. |
The lateral strain in the horizontal direction is _______ |
| A. | \(∈_h=\frac{1}{E} [σ_h-μ(σ_v)] \) |
| B. | \(∈_h=\frac{1}{E} [σ_h-μ(σ_h-σ_v)]\) |
| C. | \(∈_h=\frac{1}{E} [σ_h-μ(σ_h+σ_v)]\) |
| D. | \(∈_h=\frac{1}{E} [σ_h-(σ_h-σ_v)]\) |
| Answer» C. \(∈_h=\frac{1}{E} [σ_h-μ(σ_h+σ_v)]\) | |
| 89. |
The water table is at the ground level and backfill has saturated unit weight as 22KN/m³. The height of wall is 6m and Kₐ=1/3. Find the pressure intensity, if free water stands on other face of wall. |
| A. | 45.82 KN/m² |
| B. | 78.28 KN/m² |
| C. | 24.38 KN/m² |
| D. | 56.27 KN/m² |
| Answer» D. 56.27 KN/m² | |
| 90. |
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» C. Wall friction | |
| 91. |
For cohesion-less soil, the angle of internal friction is 45°, find the K₀. |
| A. | 0.429 |
| B. | 0.784 |
| C. | 0.293 |
| D. | 0.334 |
| Answer» D. 0.334 | |
| 92. |
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» D. pₐ=γzcot² α/2c cotα | |
| 93. |
After excavating the shaft, the shearing stresses along the walls of the shaft will be equal to ___________ |
| A. | Zero |
| B. | Normal stress |
| C. | Circumferential stress |
| D. | All of the mentioned |
| Answer» B. Normal stress | |
| 94. |
If the angle of internal friction decreases, then Kₐ ___________ |
| A. | decreases |
| B. | increases |
| C. | equal to zero |
| D. | does not change |
| Answer» C. equal to zero | |
| 95. |
The Belli equation of lateral pressure of cohesive soil is ____________ |
| A. | pₐ=γzcot² α-2c cotα |
| B. | pₐ=γzcot² α+2c cotα |
| C. | pₐ=-2c cotα |
| D. | pₐ=γzcot² α/2c cotα |
| Answer» B. pₐ=γzcot² α+2c cotα | |
| 96. |
In active state, the minor principal stress σ₃ is _________ |
| A. | horizontal direction |
| B. | vertical direction |
| C. | can be both vertical and horizontal direction |
| D. | in no direction |
| Answer» B. vertical direction | |
| 97. |
During the passive state of plastic equilibrium, the retaining wall moves _______ |
| A. | towards the fill |
| B. | away from the fill |
| C. | does not change its position |
| D. | remains in equilibrium |
| Answer» B. away from the fill | |
| 98. |
In active state of plastic equilibrium, the earth pressure on the wall ________ |
| A. | increases |
| B. | decreases |
| C. | is zero |
| D. | is constant |
| Answer» C. is zero | |
| 99. |
In passive state of plastic equilibrium, the earth pressure on the wall ________ |
| A. | increases |
| B. | decreases |
| C. | is zero |
| D. | is constant |
| Answer» B. decreases | |
| 100. |
The coefficient of earth pressure for active state of plastic equilibrium is given by ___________ |
| A. | \(K_a=\frac{1}{tan^2 (45°+\frac{φ}{2})} \) |
| B. | \(K_a=tan^2 (45°+\frac{φ}{2}) \) |
| C. | \(K_a=sin^2 (45°+\frac{φ}{2}) \) |
| D. | \(K_a=\frac{1}{cot^2 (45°+\frac{φ}{2})} \) |
| Answer» B. \(K_a=tan^2 (45°+\frac{φ}{2}) \) | |