MCQOPTIONS
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MCQOPTIONS
This section includes 88 Mcqs, each offering curated multiple-choice questions to sharpen your Geotechnical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If P is the vertical relation and ρ is the vertical deflection, then the modulus of sub-grade reaction is _______ |
| A. | \(k_s=\frac{P}{ρ}\) |
| B. | \(k_s=\frac{1}{P}\) |
| C. | \(k_s=\frac{ρ}{P}\) |
| D. | \(k_s=\frac{P}{2ρ}\) |
| Answer» B. \(k_s=\frac{1}{P}\) | |
| 2. |
During expansion the under-side of the slab is subjected to _________ |
| A. | tensile stress |
| B. | shearing stress |
| C. | compressive stress |
| D. | bulk stress |
| Answer» D. bulk stress | |
| 3. |
A base under rigid pavements is used for the ___________ |
| A. | preservation of pumping of fine grained soils |
| B. | pumping of fine grained soils |
| C. | surface coating |
| D. | finishing |
| Answer» B. pumping of fine grained soils | |
| 4. |
A base course enables the construction to proceed during wet weather on clays and silts. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 5. |
The temperature in general at the bottom of the slab is __________ |
| A. | constant |
| B. | variant |
| C. | constant during the days only |
| D. | constant during the nights only |
| Answer» B. variant | |
| 6. |
_________is an empirical method based on soil classification and other factor like climate and moisture. |
| A. | Group index method |
| B. | Plate bearing test mathod |
| C. | CBR |
| D. | North Dakota cone method |
| Answer» B. Plate bearing test mathod | |
| 7. |
In general, the CBR values of 2.5mm penetration are smaller than 5mm penetration. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 8. |
In pavements ___________ forms the foundation layer. |
| A. | Base course |
| B. | Sub-base |
| C. | Sub-grade |
| D. | Wearing course |
| Answer» D. Wearing course | |
| 9. |
__________ can take appreciable tensile stress. |
| A. | Flexible pavement |
| B. | Semi-flexible pavement |
| C. | Rigid pavement |
| D. | Tar pavement |
| Answer» D. Tar pavement | |
| 10. |
The modulus of electricity of a semi-flexible pavement is ___________ |
| A. | lower than concrete |
| B. | greater than concrete |
| C. | equal to concrete |
| D. | is always zero |
| Answer» B. greater than concrete | |
| 11. |
In the lower layers of the flexible pavement, lower quality materials are used. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 12. |
The flexible pavement do not distribute the load by ______ |
| A. | distributing through thick layers |
| B. | grain to grain transfer |
| C. | bending action |
| D. | layered system |
| Answer» D. layered system | |
| 13. |
The vertical strain ∈z due to triaxial load (σz,σᵣ,σₜ=σᵣ) under the center of plate is _________ |
| A. | \(∈_z=\frac{1}{E}[σ_z-μ(σ_r)]\) |
| B. | \(∈_z=\frac{1}{E}[σ_z-2μ(σ_r)]\) |
| C. | \(∈_z=\frac{1}{E}[σ_z-23μ(σ_r)]\) |
| D. | \(∈_z=\frac{1}{E}[σ_z-0.43μ(σ_r)]\) |
| Answer» C. \(∈_z=\frac{1}{E}[σ_z-23μ(σ_r)]\) | |
| 14. |
The Boussinesq settlement factor is given by _______ |
| A. | \(F_B=\frac{3}{2} \frac{1}{1+(\frac{z}{a})^2}\) |
| B. | \(F_B=\frac{3}{2} \frac{1}{(1+(\frac{z}{a})^2)^\frac{5}{2}}\) |
| C. | \(F_B=\frac{3}{2} \frac{1}{(1+(\frac{z}{a})^2)^\frac{1}{2}}\) |
| D. | \(F_B=\frac{1}{(1+(\frac{z}{a})^2)^\frac{1}{2}}\) |
| Answer» D. \(F_B=\frac{1}{(1+(\frac{z}{a})^2)^\frac{1}{2}}\) | |
| 15. |
If the load is at the surface of subgrade, the Boussinesq settlement factor is given by ________ |
| A. | 1.5 |
| B. | 2 |
| C. | 2.5 |
| D. | 3 |
| Answer» B. 2 | |
| 16. |
Based on the equal deflection criterion, the expression for the equivalent wheel load Pₑ is _________ |
| A. | \(F_e \sqrt{P_e}=(F_1+F_2)\sqrt{P} \) |
| B. | \(F_e \sqrt{P_e}=(F_1-F_2) \sqrt{P}\) |
| C. | \(F_e \sqrt{P_e}=(F_1*F_2) \sqrt{P}\) |
| D. | \(F_e \sqrt{P_e}=(F_1/F_2) \sqrt{P}\) |
| Answer» B. \(F_e \sqrt{P_e}=(F_1-F_2) \sqrt{P}\) | |
| 17. |
The maximum stress occurs on __________ |
| A. | vertical plane passing through radial distance of one from the point of load application |
| B. | vertical plane passing through radial distance of two from the point of load application |
| C. | vertical plane passing through the point of load application |
| D. | vertical plane passing through radial distance of three from the point of load application |
| Answer» D. vertical plane passing through radial distance of three from the point of load application | |
| 18. |
The design of flexible pavement is based on ________ |
| A. | slab mechanism |
| B. | grain to grain transfer |
| C. | column mechanism |
| D. | footing mechanism |
| Answer» C. column mechanism | |
| 19. |
The stability of sub-grade in a pavement is influenced by __________ |
| A. | Compaction |
| B. | water contact |
| C. | Materials used |
| D. | Rigidity |
| Answer» C. Materials used | |
| 20. |
The group index method of design of flexible pavement was suggested by __________ |
| A. | O.J. Porter |
| B. | California state highway |
| C. | Highway research board |
| D. | North Dakota state highway |
| Answer» D. North Dakota state highway | |
| 21. |
Which of the following layer of pavement should withstand a high level of deformation? |
| A. | Base course |
| B. | Sub-base |
| C. | Sub-grade |
| D. | Surfacing course |
| Answer» B. Sub-base | |
| 22. |
The base course in rigid pavement provides drainage. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 23. |
For a loaded circular area of radius ‘a’, μ=Poisson’s ratio, the horizontal radial stress is ________ |
| A. | \(σ_r=\frac{p}{2} \left[1+2μ-\frac{2(1+μ)z}{(a^2+z^2)^\frac{1}{2}}\right]\) |
| B. | \(σ_r=\frac{p}{2} \left[\frac{2(1+μ)z}{(a^2+z^2)^\frac{1}{2}}+\frac{z^3}{(a^2+z^2)^\frac{3}{2}}\right]\) |
| C. | \(σ_r=\frac{p}{2} \left[1-2μ-\frac{2(1+μ)z}{(a^2+z^2)^\frac{1}{2}}+\frac{z^3}{(a^2+z^2)^\frac{3}{2}}\right]\) |
| D. | \(σ_r=\frac{p}{2} \left[1+2μ-\frac{2(1+μ)z}{(a^2+z^2)^\frac{1}{2}}+\frac{z^3}{(a^2+z^2)^\frac{3}{2}}\right]\) |
| Answer» E. | |
| 24. |
During the clear, cool night followed by a hot sunny day, the edges and corners of slab will ____________ |
| A. | wrap downward |
| B. | wrap upward |
| C. | wrap upwards and downwards |
| D. | wrap laterally |
| Answer» C. wrap upwards and downwards | |
| 25. |
The strength of sub-grade is increased by _________ |
| A. | compaction |
| B. | swelling |
| C. | bulking |
| D. | addition of excess of water |
| Answer» B. swelling | |
| 26. |
For the loaded circular area of radius a, the vertical stress on a vertical line passing through the center of the loaded area is __________ |
| A. | \(σ_z=p\left[1-\left[\frac{1}{1+(\frac{a}{z})^2}\right]^\frac{3}{2}\right]\) |
| B. | \(σ_z=p\left[1+\left[\frac{1}{1+(\frac{a}{z})^2}\right]^\frac{3}{2}\right]\) |
| C. | \(σ_z=p\left[\frac{1}{1+(\frac{a}{z})^2}\right]^\frac{3}{2}\) |
| D. | \(σ_z=p\left[1-\left[\frac{1}{1+(\frac{a}{z})^2}\right]^\frac{5}{2}\right]\) |
| Answer» B. \(σ_z=p\left[1+\left[\frac{1}{1+(\frac{a}{z})^2}\right]^\frac{3}{2}\right]\) | |
| 27. |
For CBR test, the specimens are submerged in water for 4 days before testing. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 28. |
The wearing course of flexible pavement is made of __________ |
| A. | bituminous materials |
| B. | R.C.C |
| C. | P.C.C |
| D. | OPC |
| Answer» B. R.C.C | |
| 29. |
The CBR mould has internal diameter of ______ |
| A. | 200mm |
| B. | 50mm |
| C. | 100mm |
| D. | 150mm |
| Answer» E. | |
| 30. |
The wearing course is flexible. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 31. |
The critical stress condition in slab occurs when __________ |
| A. | load is applied at exterior of the slab |
| B. | load is applied at exterior and interior of the slab |
| C. | no load is applied |
| D. | load is applied at interior of the slab |
| Answer» E. | |
| 32. |
The contact area of wheel is _______ |
| A. | triangular |
| B. | square |
| C. | rectangular |
| D. | circular |
| Answer» E. | |
| 33. |
The critical stress condition in slab is when _________ |
| A. | temperature and load stresses are multiplicative |
| B. | temperature and load stresses are additive |
| C. | temperature and load stresses oppose each other |
| D. | critical stress condition does not occur in slab |
| Answer» C. temperature and load stresses oppose each other | |
| 34. |
In Burmister analysis, the subgrade layers are non-homogeneous and anisotropic. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 35. |
In Burmister analysis, the subgrade layer is infinite only in vertical direction. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 36. |
The Burmister’s influence coefficient is ________ |
| A. | \(C_B=\frac{σ_z}{p} \) |
| B. | CB=σz-p |
| C. | CB=σz*p |
| D. | CB=σz+p |
| Answer» B. CB=σz-p | |
| 37. |
If F is a dimensionless factor, the defection in rigid plate of radius a is__________ |
| A. | \(∆=\frac{pa}{E} 1.5F\) |
| B. | \(∆=\frac{pa}{E} 1.18F\) |
| C. | \(∆=\frac{a^2}{2E} 1.18F\) |
| D. | \(∆=\frac{pa}{E} 2F\) |
| Answer» B. \(∆=\frac{pa}{E} 1.18F\) | |
| 38. |
Base course and sub-base course are used under flexible pavements for __________ purpose. |
| A. | To provide foundation |
| B. | To increase durability |
| C. | To increase load supporting capacity |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 39. |
During contraction, _________ are induced in the under-side of the slab. |
| A. | tensile stress |
| B. | shearing stress |
| C. | compressive stress |
| D. | bulk stress |
| Answer» B. shearing stress | |
| 40. |
The flexible pavements resist ___________ tensile stresses. |
| A. | only very small |
| B. | large |
| C. | negligible |
| D. | very large |
| Answer» B. large | |
| 41. |
Maximum wheel load is the greatest load transmitted by __________ |
| A. | a single wheel |
| B. | two wheels |
| C. | three wheels |
| D. | four wheels |
| Answer» B. two wheels | |
| 42. |
The CBR values are generally calculated for penetrations of __________ |
| A. | 2.5mm and 5mm |
| B. | 5mm and 7mm |
| C. | 7mm and 9mm |
| D. | 9mm and 10mm |
| Answer» B. 5mm and 7mm | |
| 43. |
The radius of relative stiffness is given by the characteristic equation of _______ |
| A. | \(l=\{\frac{eh^3}{12(1-μ^2 ) k_s}\}^\frac{1}{4}\) |
| B. | \(l=\{\frac{eh^3}{12(1-μ^4 ) k_s}\}^\frac{1}{4}\) |
| C. | \(l=\{\frac{eh^3}{12(1-μ^2 ) k_s}\}^\frac{1}{2}\) |
| D. | \(l=\{\frac{eh^3}{12(1-μ^2 ) k_s}\}^\frac{1}{3}\) |
| Answer» B. \(l=\{\frac{eh^3}{12(1-μ^4 ) k_s}\}^\frac{1}{4}\) | |
| 44. |
The flexible pavement-thickness consists of __________ components. |
| A. | Two |
| B. | Three |
| C. | Four |
| D. | Five |
| Answer» C. Four | |
| 45. |
When load is applied on rigid pavement, it deforms in a _______ |
| A. | bottle shape |
| B. | saucer shape |
| C. | rectangular shape |
| D. | square shape |
| Answer» C. rectangular shape | |
| 46. |
The thickness design of flexible pavement is dependent on _________ |
| A. | uniformity of subgrade |
| B. | thickness of subgrade |
| C. | length of subgrade |
| D. | strength of subgrade |
| Answer» E. | |
| 47. |
The base course must possess low resistance to deformation. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 48. |
The California bearing ratio method was originally devised by ________ |
| A. | O.J. Porter |
| B. | California state highway |
| C. | Highway research board |
| D. | North Dakota state highway |
| Answer» B. California state highway | |
| 49. |
The weaving course is also known as _________ |
| A. | base course |
| B. | surfacing |
| C. | sub-base |
| D. | subgrade |
| Answer» C. sub-base | |
| 50. |
The pavements can be ______ |
| A. | flexible only |
| B. | semi flexible only |
| C. | rigid only |
| D. | flexible, semi flexible and rigid |
| Answer» E. | |