GATE GG-1 Engineering properties of rocks and soils PYQs & Answers — Exam Papers

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Engineering properties of rocks and soils

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Questions 1–9 of 9. Imported answers require independent review unless marked reviewed.

Topic practice 9 questionsPage 1 of 1

A cylindrical sample of granite (diameter = 54.7 mm; length = 137 mm) shows a linear relationship between axial stress and axial strain under uniaxial compression up to the peak stress level at which the specimen fails. If the uniaxial compressive strength of this sample is 200 MPa and the axial strain corresponding to this peak stress is 0.005, the Young’s modulus of the sample in GPa is ______ (in integer).

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The mass and volume of a fully dried soil sample are 220 gm and 1100 cm³, respectively. If the specific gravity of the soil particles is 2.5 and water density is 1 gm/cm³, the void ratio of the soil is ________. [round off to 2 decimal places]

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In a soil sample, specific gravity of soil particles is 2.5 and the void ratio is 0.5. The density of the soil sample when it is fully saturated with water is ______ kg/m³. (Assume density of water = 1000 kg/m³, and no volume change of the soil sample with saturation)

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A cylindrical specimen (diameter = 54.7 mm; length = 110 mm) of basalt shows linear elastic behavior under uniaxial compression. At an axial stress of 100 Mega-Pascal (MPa), the absolute value of the measured axial strain is 0.2%. The Young’s modulus is calculated to be ______ Giga-Pascal (GPa).

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For a dam site investigation, drilling was carried out up to a depth of 20 m. The total length of recovered core pieces, each over 100 mm, add up to 16 m. The Rock Quality Designation (RQD) of the foundation rock mass is ______%.

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The shear wave velocity in an igneous rock with a density of 2.7 gm/cc and rigidity modulus of 24.3 GPa is ______ km/s. (round off to 1 decimal place).

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The unit of shear modulus (rigidity modulus) is

Your answerChoose one option.

A.

kg m

s

B.

m

s

C.

kg m

s

D.

m

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If the total porosity of a soil is 20%, its void ratio (%) is ________.

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Los Angeles abrasion test was conducted for a granite aggregate with an initial weight of 4800 grams. After the test, the aggregate weighed 3504 grams. The Los Angeles abrasion value is ________ %.

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