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.
| 51. |
In CBR test, the standard load is the penetration resistance of plunger into a _________ |
| A. | standard sample of crushed stones |
| B. | clay |
| C. | saturated silt |
| D. | peat |
| Answer» B. clay | |
| 52. |
The flexible pavements consists of _____________ |
| A. | thin wearing surface |
| B. | thick wearing surface |
| C. | no wearing surface |
| D. | wearing surface present at only specific places |
| Answer» B. thick wearing surface | |
| 53. |
For a Poisson’s ratio of 0.5, the elastic strain ∆ is ___________ |
| A. | \(∆=\frac{3pa^2}{2E} \) |
| B. | \(∆=\frac{pa^2}{2E(a^2+z^2)^\frac{1}{2}} \) |
| C. | \(∆=\frac{3pa^2}{2E(a^2+z^2)^\frac{1}{2}} \) |
| D. | \(∆=\frac{a^2}{2E(a^2+z^2)^\frac{1}{2}} \) |
| Answer» D. \(∆=\frac{a^2}{2E(a^2+z^2)^\frac{1}{2}} \) | |
| 54. |
The pressure transmitted to the surface of the pavement by the wheel is ________ |
| A. | differential pressure |
| B. | absolute pressure |
| C. | contact pressure |
| D. | atmospheric pressure |
| Answer» D. atmospheric pressure | |
| 55. |
The base course contains __________ |
| A. | granular material |
| B. | bituminous material |
| C. | silt |
| D. | clay |
| Answer» B. bituminous material | |
| 56. |
The stresses in rigid pavement are due to ________ |
| A. | restrained temperature only |
| B. | external loads only |
| C. | frost action only |
| D. | restrained temperature, external loads and frost action |
| Answer» E. | |
| 57. |
In a day, the top surface of rigid pavement ______ than the bottom of slab. |
| A. | expands |
| B. | contracts |
| C. | remains stable |
| D. | shows no changes |
| Answer» B. contracts | |
| 58. |
A semi-flexible pavement is made of ___________ |
| A. | tar only |
| B. | bitumen only |
| C. | dry-lean concrete |
| D. | aggregates only |
| Answer» D. aggregates only | |
| 59. |
If there is no friction between the slab and the sub-grade, then there are ______ in slab. |
| A. | no stresses |
| B. | small number of stresses |
| C. | large number of stresses |
| D. | temperature gradients |
| Answer» B. small number of stresses | |
| 60. |
The elastic strain ∆ of the subgrade is __________ |
| A. | \(∆=\frac{p}{E}\left[(2-2μ^2)(a^2+z^2)^\frac{1}{2}-\frac{(1+μ) z^2}{(a^2+z^2)^\frac{1}{2}}+(μ+2μ^2-1)z\right]\) |
| B. | \(∆=\frac{p}{2}\left[\frac{2(1+μ)z}{(a^2+z^2)^\frac{1}{2}}+ \frac{z^3}{(a^2+z^2)^\frac{3}{2}}\right]\) |
| C. | \(∆=\frac{p}{2}\left[1-2μ-\frac{2(1+μ)z}{(a^2+z^2)^\frac{1}{2}}+ \frac{z^3}{(a^2+z^2)^\frac{3}{2}}\right]\) |
| D. | \(∆=\frac{p}{2}\left[1+2μ-\frac{2(1+μ)z}{(a^2+z^2)^\frac{1}{2}}+ \frac{z^3}{(a^2+z^2)^\frac{3}{2}}\right]\) |
| Answer» B. \(∆=\frac{p}{2}\left[\frac{2(1+μ)z}{(a^2+z^2)^\frac{1}{2}}+ \frac{z^3}{(a^2+z^2)^\frac{3}{2}}\right]\) | |
| 61. |
The critical stress condition in slab occurs when __________ |
| A. | corners remain unwrapped |
| B. | corners are wrapped upward |
| C. | corners are wrapped downward |
| D. | corners are wrapped laterally |
| Answer» D. corners are wrapped laterally | |
| 62. |
The maximum legal axle wheel load is _________ kg as specified by IRC. |
| A. | 3473 |
| B. | 5466 |
| C. | 8170 |
| D. | 4085 |
| Answer» D. 4085 | |
| 63. |
If the load is at the surface of subgrade, the elastic strain is ________ |
| A. | \(∆=\frac{pa}{E} 1.5\) |
| B. | \(∆=\frac{3pa^2}{2E} 2.5\) |
| C. | \(∆=\frac{a^2}{2E} 3\) |
| D. | \(∆=\frac{pa^2}{2E} 3.5\) |
| Answer» B. \(∆=\frac{3pa^2}{2E} 2.5\) | |
| 64. |
The sub-base is __________ |
| A. | below the base course |
| B. | above the base course |
| C. | below the sub-grade |
| D. | above the wearing course |
| Answer» B. above the base course | |
| 65. |
For a Poisson’s ratio of 0.5, the elastic strain ∆ in terms of Boussinesq settlement factor is __________ |
| A. | \(∆=\frac{pa}{E} F_B\) |
| B. | \(∆=\frac{3pa^2}{2E} F_B\) |
| C. | \(∆=\frac{a^2}{2E} F_B\) |
| D. | \(∆=\frac{pa^2}{2E} F_B\) |
| Answer» B. \(∆=\frac{3pa^2}{2E} F_B\) | |
| 66. |
The CBR is _______ |
| A. | \(\frac{Test \,load}{standard \,load}*100\) |
| B. | \(\frac{standard \,load}{test \,load}*100\) |
| C. | \(\frac{2*Test\, load}{standard \,load}*100\) |
| D. | Test load*100 |
| Answer» B. \(\frac{standard \,load}{test \,load}*100\) | |
| 67. |
In flexible pavement, _______ sub grade is more essential. |
| A. | well – compacted |
| B. | poorly-compacted |
| C. | low quality |
| D. | uniform |
| Answer» C. low quality | |
| 68. |
____________is a relatively stable crust constructed over the natural soil for the purpose of supporting and distributing the wheel loads. |
| A. | pavements |
| B. | wall |
| C. | beam |
| D. | column |
| Answer» B. wall | |
| 69. |
In CBR test, the cylindrical plunger of ________ diameter is used. |
| A. | 5 cm |
| B. | 10 cm |
| C. | 15 cm |
| D. | 20 cm |
| Answer» B. 10 cm | |
| 70. |
The uniform sub grade support is most important in ___________ |
| A. | flexible pavement |
| B. | semi-flexible pavement |
| C. | rigid pavement |
| D. | tar pavement |
| Answer» D. tar pavement | |
| 71. |
The rigid pavement tends to distribute the load by ______ |
| A. | slab mechanism |
| B. | grain to grain transfer |
| C. | column mechanism |
| D. | footing mechanism |
| Answer» B. grain to grain transfer | |
| 72. |
In CBR test, the rate of penetration of plunger is _______ mm/min. |
| A. | 0.25 |
| B. | 1.25 |
| C. | 2.35 |
| D. | 3.25 |
| Answer» C. 2.35 | |
| 73. |
The stress σz at any point (r,z) below the pavement is __________ |
| A. | \(σ_z=\frac{3P}{2πz^2}\left[\frac{1}{1+(\frac{r}{z})^3}\right]^\frac{5}{2}\) |
| B. | \(σ_z=\frac{3P}{2πz^2}\left[\frac{1}{(\frac{r}{z})^2}\right]^\frac{5}{2}\) |
| C. | \(σ_z=\left[\frac{1}{1+(\frac{r}{z})^2}\right]^\frac{5}{2}\) |
| D. | \(σ_z=\frac{3P}{2πz^2}\left[\frac{1}{1+(\frac{r}{z})^2}\right]^\frac{5}{2}\) |
| Answer» E. | |
| 74. |
The thickness design of the flexible pavement is influenced by _________ |
| A. | Distributing load |
| B. | Strength of sub-grade |
| C. | Sub-base |
| D. | Soil properties |
| Answer» C. Sub-base | |
| 75. |
The essential difference between rigid flexible pavements is ___________ |
| A. | Distribution of load over sub-grade |
| B. | Distribution of load over sub-base |
| C. | Materials used |
| D. | Thickness of layers |
| Answer» B. Distribution of load over sub-base | |
| 76. |
IN_PAVEMENTS,____________FORMS_THE_FOUNDATION_LAYER.?$ |
| A. | Base course |
| B. | Sub-base |
| C. | Sub-grade |
| D. | Wearing course |
| Answer» D. Wearing course | |
| 77. |
The flexible pavement-thickness consists of __________ components.$ |
| A. | Two |
| B. | Three |
| C. | Four |
| D. | Five |
| Answer» C. Four | |
| 78. |
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 | |
| 79. |
Which of the following layer of pavement should withstand high level of deformation? |
| A. | Base course |
| B. | Sub-base |
| C. | Sub-grade |
| D. | Surfacing course |
| Answer» B. Sub-base | |
| 80. |
Which of the following pavement can be used, for construction on black cotton soils? |
| A. | Flexible pavement |
| B. | Semi-flexible pavement |
| C. | Rigid pavement |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 81. |
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 | |
| 82. |
The wearing surface of pavement are made of _________ |
| A. | Bituminous materials |
| B. | Portland cement concrete |
| C. | Dry-lean concrete |
| D. | Other materials |
| Answer» B. Portland cement concrete | |
| 83. |
Which of the following pavement is capable of resisting small tensile strength? |
| A. | Semi-flexible pavement |
| B. | Rigid pavement |
| C. | Flexible pavement |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 84. |
Rigid pavement are commonly made of ________ |
| A. | Bitumen |
| B. | Portland cement concrete |
| C. | Dry-lean concrete |
| D. | None of the mentioned |
| Answer» C. Dry-lean concrete | |
| 85. |
The essential difference between rigid flexible pavements is___________ |
| A. | Distribution of load over sub-grade |
| B. | Distribution of load over sub-base |
| C. | Materials used |
| D. | Thickness of layers |
| Answer» B. Distribution of load over sub-base | |
| 86. |
The thickness design of the flexible pavement is influenced by_________ |
| A. | Distributing load |
| B. | Strength of sub-grade |
| C. | Sub-base |
| D. | Soil properties |
| Answer» C. Sub-base | |
| 87. |
Pavements are classified, based on ________ factors. |
| A. | Earth surface |
| B. | Materials used |
| C. | Rigidity of the pavement |
| D. | Distributing loads |
| Answer» D. Distributing loads | |
| 88. |
Which of the following is a classification of pavements? |
| A. | Load pavement |
| B. | Sub-grade pavement |
| C. | Flexible pavement |
| D. | Rigidity pavement |
| Answer» D. Rigidity pavement | |