Geotechnical Engineering MCQs | Geotechnical Engineering MCQs and Answers for competitive exams

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Questions
81 The maximum dry density upto which any soil can be compacted depends upon
A amount of compaction energy only
B moisture content only
C both moisture content and amount of compaction energy
D none of the above

Answer: both moisture content and amount of compaction energy
82 In a consolidated drained test on a normally consolidated clay, the volume of the soil sample during shear
A remains unchanged
B increases
C decreases
D first increases and then decreases

Answer: decreases
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83 Unconfmed compressive strength test is
A drained test
B consolidated drained test
C consolidated undrained test
D undrained test

Answer: undrained test
84 The angle that Coulomb's failure envelope makes with the horizontal is called
A angle of internal friction
B angle of repose
C cohesion
D none of the above

Answer: cohesion
85 Sensitivity of a soil can be defined as
A ratio of compressive strength of unconfined undisturbed soil to that of soil in a remoulded state
B percentage of volume change of soil under saturated condition
C ratio of volume of voids to volume of solids
D none of the above

Answer: ratio of compressive strength of unconfined undisturbed soil to that of soil in a remoulded state
86 The effect of cohesion on a soil is to
A reduce the active earth pressure in-tensity but to increase the passive earth pressure intensity
B increase both the active earth pressure intensity and passive earth pressure intensity
C increase the active earth pressure in-tensity but to reduce the passive earth pressure intensity
D reduce both the active earth pressure intensity and passive earth pressure intensity

Answer: reduce the active earth pressure in-tensity but to increase the passive earth pressure intensity
87 A 600 mm square bearing plate settles by 15 mm in plate load test on a cohesionless soil under an intensity of loading of 0.2 N/ram2. The settlement of a prototype shallow footing 1 m square under the same intensity of loading is
A 15 mm
B between 15 mm and 25 mm
C greater than 25 mm
D none of the above

Answer: between 15 mm and 25 mm
88 Which of the following types of soil is transported by gravitational forces ?
A talus
B loess
C dune sand
D drift

Answer: talus
89 Rankine's theory of earth pressure assumes that the back of the wall is
A vertical and smooth
B plane and smooth
C vertical and rough
D None of the above

Answer: vertical and smooth
90 If the sand in-situ is in its densest state, then the relative density of sand is
A 1
B between 0 and 1
C greater than 1
D none of the above

Answer: 1

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