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.
| 1. |
The coefficient of earth pressure at rest is represented as _________ expression given by Jaky. |
| A. | K₀=1-sinφ |
| B. | K₀=sinφ |
| C. | K₀=1-cosφ |
| D. | K₀=cosφ |
| Answer» B. K₀=sinφ | |
| 2. |
If free water stands on both side of a retaining wall, the lateral earth pressure is given by ____ |
| A. | pₐ=Kₐ γ’ z |
| B. | pₐ=Kₐ γ’ z-γw z |
| C. | pₐ=Kₐ γ’ z+γw z |
| D. | pₐ=Kₐ γ’ z*γw z |
| Answer» B. pₐ=Kₐ γ’ z-γw z | |
| 3. |
For an angle of internal friction of 300, the values of coefficients of active and passive earth pressures are given by a _____ and ____ respectively. |
| A. | \(\frac{1}{3}\), 3 |
| B. | \(\frac{1}{5}\), 5 |
| C. | 3, \(\frac{1}{3}\) |
| D. | 5, \(\frac{1}{5}\) |
| Answer» B. \(\frac{1}{5}\), 5 | |
| 4. |
The Rankine’s lateral pressure ratio is given by ________ |
| A. | \(K=\frac{\sqrt{cos^2 β-cos^2 φ}}{cosβ+\sqrt{cos^2 β-cos^2 φ}} \) |
| B. | \(K=\frac{cosβ+\sqrt{cos^2 β-cos^2 φ}}{cosβ-\sqrt{cos^2 β-cos^2 φ}} \) |
| C. | \(K=\frac{cosβ-\sqrt{cos^2 β-cos^2 φ}}{cosβ+\sqrt{cos^2 β-cos^2 φ}} \) |
| D. | \(K=cosβ\frac{cosβ-\sqrt{cos^2 β-cos^2 φ}}{cosβ+\sqrt{cos^2 β-cos^2 φ}} \) |
| Answer» D. \(K=cosβ\frac{cosβ-\sqrt{cos^2 β-cos^2 φ}}{cosβ+\sqrt{cos^2 β-cos^2 φ}} \) | |
| 5. |
Positive projecting conduits are of ___________ types. |
| A. | 2 |
| B. | 5 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 6. |
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» D. No tension should be developed in the wall | |
| 7. |
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=\(\frac{1}{3}.\) Find the pressure intensity. |
| A. | 45.22 KN/m² |
| B. | 18.45 KN/m² |
| C. | 83.24 KN/m² |
| D. | 67.83 KN/m² |
| Answer» D. 67.83 KN/m² | |
| 8. |
Which of the following values of K0 is used to compute the stress in the vicinity of a cylindrical tunnel? |
| A. | K0 = 1 |
| B. | K0 = μ / 1-μ |
| C. | K0 = 0 |
| D. | All of the mentioned |
| Answer» E. | |
| 9. |
If a tension crack is developed at the top of wall to a depth Z₀ in cohesive soils, then the total net pressure is zero for a depth of _________ |
| A. | 2Z₀ |
| B. | 3Z₀ |
| C. | 4Z₀ |
| D. | 5Z₀ |
| Answer» B. 3Z₀ | |
| 10. |
The total earth pressure P₀ at rest per unit length for vertical height H is _______ |
| A. | \(P_0=\frac{1}{2}K_0γH^2\) |
| B. | P₀=γH² |
| C. | P₀=K₀ γH² |
| D. | \(P_0=\frac{1}{2}K_0H^2\) |
| Answer» B. P₀=γH² | |
| 11. |
The tension at the top level of retaining wall reduces to zero at a depth ___________ |
| A. | \(z_0=\frac{q-2c cotα}{γ} \) |
| B. | \(z_0=\frac{2c tanα}{γ} \) |
| C. | \(z_0=\frac{2 cotα}{γ} \) |
| D. | \(z_0=\frac{cotα}{γ} \) |
| Answer» C. \(z_0=\frac{2 cotα}{γ} \) | |
| 12. |
What will be the co-efficient of passive earth pressure, at a depth of 8m in cohesion less soil sand with an angle of internal friction of 30° when the water rises to the ground level? |
| A. | 4 |
| B. | 5 |
| C. | 3 |
| D. | 1 |
| Answer» D. 1 | |
| 13. |
For a saturated clay cᵤ=18KN/m², find the height of tension cracks is 7m. Find the saturated unit weight. |
| A. | 43 KN/m³ |
| B. | 98 KN/m³ |
| C. | 18 KN/m³ |
| D. | 86 KN/m³ |
| Answer» D. 86 KN/m³ | |
| 14. |
For the different value of φ, the backfill is partly submerged to height H₂ and the backfill is moist to a depth H₁. Find the lateral pressure intensity at the base of wall for φ₁>φ₂. |
| A. | pₐ=Kₐ₂ γH₁-Kₐ₂ γ’ H₂+γw H₂ |
| B. | pₐ=Kₐ₂ γH₁+Kₐ₂ γ’ H₂+γw H₂ |
| C. | pₐ=Kₐ₂ γH₁+γw H₂ |
| D. | pₐ=Kₐ₂ γH₁+Kₐ₂ γ’ H₂ |
| Answer» C. pₐ=Kₐ₂ γH₁+γw H₂ | |
| 15. |
The force acting on a wedge of soil are ____________ |
| A. | Frictional force |
| B. | Weight of the wedge and Active thrust |
| C. | None of the mentioned |
| D. | All of the mentioned |
| Answer» C. None of the mentioned | |
| 16. |
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. | \(P=\sqrt{P_1^2+W^2}\) |
| C. | P=(P₁+W)2 |
| D. | P=P₁-W |
| Answer» C. P=(P₁+W)2 | |
| 17. |
Underground conduits are commonly used for, which of the following purpose? |
| A. | Sewers |
| B. | Gas lines |
| C. | Culverts |
| D. | All of the mentioned |
| Answer» E. | |
| 18. |
Ditch conduits are more commonly used in ___________ |
| A. | Sewers |
| B. | High way |
| C. | Railway culverts |
| D. | All of the mentioned |
| Answer» B. High way | |
| 19. |
The vertical and the lateral pressures have the same angle of obliquity β. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 20. |
For earth pressure at rest, there will be no ______ |
| A. | vertical stress |
| B. | shear stress |
| C. | horizontal stress |
| D. | both vertical and horizontal stress |
| Answer» C. horizontal stress | |
| 21. |
For finding out the active earth pressure for a backfill with sloping surface, the Rankine’s theory makes as additional assumption of ________ |
| A. | vertical and lateral stresses are normal to surcharge |
| B. | vertical and lateral stresses are tangential to surcharge |
| C. | vertical and lateral stresses are conjugate |
| D. | vertical and lateral stresses are negligible |
| Answer» D. vertical and lateral stresses are negligible | |
| 22. |
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» E. | |
| 23. |
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» B. K₀ = sin φ | |
| 24. |
The settlement ratio for a negative projecting conduit is __________ |
| A. | Always positive |
| B. | Always negative |
| C. | Negative in some cases |
| D. | None of the mentioned |
| Answer» C. Negative in some cases | |
| 25. |
If γ is the unit weight of soil, then the lateral earth pressure at depth z of soil mass is ______ |
| A. | \(σ_h=\frac{3}{2} K_0 z\) |
| B. | σₕ=γz |
| C. | σₕ=-K₀ γz |
| D. | σₕ=K₀ γz |
| Answer» E. | |
| 26. |
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» B. Lateral pressure due to retaining wall | |
| 27. |
The pressure distribution diagram for earth pressure at rest is _______ |
| A. | circular |
| B. | triangular |
| C. | rectangular |
| D. | square |
| Answer» C. rectangular | |
| 28. |
Culmann’s solution is based on ___________ theory. |
| A. | Coulomb’s |
| B. | Rebhann’s |
| C. | Mohr |
| D. | Rankine’s |
| Answer» B. Rebhann’s | |
| 29. |
Underground conduits can be classified into ___________ types. |
| A. | 2 |
| B. | 4 |
| C. | 3 |
| D. | 5 |
| Answer» D. 5 | |
| 30. |
If the critical plane settles more than the top of the conduit, the settlement ratio is __________ |
| A. | Zero |
| B. | Negative |
| C. | Positive |
| D. | Unity |
| Answer» D. Unity | |
| 31. |
The method given by Biot for solving the problem of stress distribution was based on ________ |
| A. | Theory of elasticity |
| B. | Method of superposition |
| C. | Westerngaard method |
| D. | All of the mentioned |
| Answer» C. Westerngaard method | |
| 32. |
The resultant active pressure per unit length of wall for dry backfill with no surcharge is _______ |
| A. | \(P_a=\frac{1}{2}K_aγH^2\) |
| B. | Pₐ=γH² |
| C. | Pₐ=Kₐ γH² |
| D. | Pₐ=Kₐ H² |
| Answer» B. Pₐ=γH² | |
| 33. |
The passive earth pressure intensity in terms of coefficient of passive earth pressure is _________ |
| A. | pₚ=Kₚ γH |
| B. | pₚ=γH |
| C. | pₚ=Kₚ H |
| D. | pₚ=Kₚ γ |
| Answer» B. pₚ=γH | |
| 34. |
For a cohesion less soil with surcharge Q, the passive pressure intensity is ___________ |
| A. | pₚ=Kₚ γz+Kₚ q |
| B. | pₚ=Kₚ γz-Kₚ q |
| C. | pₚ=Kₚ γz*Kₚ q |
| D. | pₚ=Kₚ γz/Kₚ q |
| Answer» B. pₚ=Kₚ γz-Kₚ q | |
| 35. |
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» C. Mohr’s theory of rupture | |
| 36. |
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» D. None of the mentioned | |
| 37. |
A backfill of a retaining wall consists of γ=19 kN/m³ which is 6 m high. Find the lateral earth pressure per meter length. Given coefficient of earth pressure at rest is 0.5. |
| A. | 43 kN/m² |
| B. | 57 kN/m² |
| C. | 48 kN/m² |
| D. | 76 kN/m² |
| Answer» C. 48 kN/m² | |
| 38. |
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» B. increase pressure intensity by 3 | |
| 39. |
A backfill of a retaining wall consists of γ=19 kN/m³ which is 6 m high. Find the total earth pressure per meter length. Given coefficient of earth pressure at rest is 0.5. |
| A. | 165 kN/m |
| B. | 178 kN/m |
| C. | 171 kN/m |
| D. | 345 kN/m |
| Answer» D. 345 kN/m | |
| 40. |
The Rankine’s active earth pressure can also be found out by method of _____________ |
| A. | Trial wedges |
| B. | Graphical method |
| C. | Sliding wedge |
| D. | Theoretical calculation |
| Answer» B. Graphical method | |
| 41. |
Compute the passive pressure intensity when the backfill has unit weight of Kₐ=\(\frac{1}{3}\) and height of wall is 6 m. The coefficient of active earth pressure Kₐ=\(\frac{1}{3}.\) |
| A. | 176 KN/m³ |
| B. | 154 KN/m³ |
| C. | 324 KN/m³ |
| D. | 476 KN/m³ |
| Answer» D. 476 KN/m³ | |
| 42. |
In case of passive state of plastic state of equilibrium, the lateral pressure is the _________ |
| A. | minor principal stress |
| B. | major principal stress |
| C. | major principal plane |
| D. | minor principal plane |
| Answer» C. major principal plane | |
| 43. |
When the surcharge angle reduces to zero, the coefficient of active earth pressure is given by |
| A. | Kₐ=1 |
| B. | \(K_a=\frac{1-sinφ}{1+sinφ}\) |
| C. | \(K_a=\frac{1+sinφ}{1-sinφ}\) |
| D. | Kₐ=0 |
| Answer» C. \(K_a=\frac{1+sinφ}{1-sinφ}\) | |
| 44. |
Based on the assumptions of Rankine’s theory, the soil mass is __________ |
| A. | Stratified |
| B. | Submerged |
| C. | Homogeneous |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 45. |
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» B. pₐ=γzcot² α+2c cotα+cot²α | |
| 46. |
Critical plane in conduit is located at ___________ |
| A. | Tangential to the top of the conduit |
| B. | Tangential to the bottom of the conduit |
| C. | Centre of the conduit |
| D. | All of the mentioned |
| Answer» B. Tangential to the bottom of the conduit | |
| 47. |
When the high value of σϴ in the vicinity of the walls of a shaft exceeds the compressive strength it results in __________ |
| A. | Plastic flow of soil |
| B. | Non uniform stress distribution |
| C. | Increase fluid pressure |
| D. | All of the mentioned |
| Answer» B. Non uniform stress distribution | |
| 48. |
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» C. 0.5 | |
| 49. |
Find the critical height of an unsupported vertical cut in cohesive soil of C= 10KN/m² and γ=20KN/m². |
| A. | 5m |
| B. | 2m |
| C. | 8m |
| D. | 9m |
| Answer» C. 8m | |
| 50. |
For a dry backfill with no surcharge, the active earth pressure intensity is _________ |
| A. | pₐ=Kₐ γH |
| B. | pₐ=γH |
| C. | pₐ=Kₐ H |
| D. | pₐ=Kₐ γ |
| Answer» B. pₐ=γH | |