81. With the increase in the amount of compaction energy
a) optimum water content increases but maximum dry density decreases
b) optimum water content decreases but maximum dry density increases
c) both optimum water content and maximum dry density increase
d) both optimum water content and maximum dry density decrease[ES 93]
Ans:b
82. The maximum dry density upto which any soil can be compacted depends upon
a) moisture content only
b) amount of compaction energy only
c) both moisture content and amount of compaction energy
d) none of the above
Ans:c
83. For better strength and stability, the fine grained soils and coarse grained soils are compacted respectively as
a) dry of OMC and wet of OMC
b) wet of OMC and dry of OMC
c) wet of OMC and wet of OMC
d) dry of OMC and dry of OMC where OMC is optimum moisture content
Ans:b
84. Select the incorrect statement.
a) Effective cohesion of a soil can never have a negative value.
b) Effective angle of internal friction for coarse grained soils is rarely below 30°.
c) Effective angle of internal friction for a soil increases as state of compact-ness increases.
d) Effective angle of internal friction is a complicated function of mineralogy and clay size content.
Ans:a
85. For a loose sand sample and a dense sand sample consolidated to the same effective stress
a) ultimate strength is same and also peak strength is same
b) ultimate strength is different but peak strength is same
c) ultimate strength is same but peak strength of dense sand is greater than that of loose sand
d) ultimate strength is same but peak
Ans:c
86. The shear strength of a soil
a) is directly proportional to the angle of internal friction of the soil
b) is inversely proportional to the angle of internal friction of the soil
c) decreases with increase in normal stress
d) decreases with decrease in normal stress
Ans:d
87. In a consolidated drained test on a normally consolidated clay, the volume of the soil sample during shear
a) decreases
b) increases
c) remains unchanged
d) first increases and then decreases
Ans:a
88. Skempton's pore pressure coefficient B for saturated soil is
a) 1
b) zero
c) between 0 and 1
d) greater than 1
Ans:a
89. Shear strength of a soil is a unique function of
a) effective stress only
b) total stress only
c) both effective stress and total stress
d) none of the above
Ans:a
90. In a deposit of normally consolidated clay
a) effective stress increases with depth but water content of soil and un-drained strength decrease with depth
b) effective stress and water content increase with depth but undrained strength decreases with depth
c) effective stress and undrained strength increase with depth but water content decreases with depth
d) effective stress, water content and undrained strength decrease with depth
Ans:c
Read More Soil Mechanics and Foundation Engineering Questions:
Part1 Part2 Part3 Part4 Part5 Part6 Part7 Part8 Part9 Part10
a) optimum water content increases but maximum dry density decreases
b) optimum water content decreases but maximum dry density increases
c) both optimum water content and maximum dry density increase
d) both optimum water content and maximum dry density decrease[ES 93]
Ans:b
82. The maximum dry density upto which any soil can be compacted depends upon
a) moisture content only
b) amount of compaction energy only
c) both moisture content and amount of compaction energy
d) none of the above
Ans:c
83. For better strength and stability, the fine grained soils and coarse grained soils are compacted respectively as
a) dry of OMC and wet of OMC
b) wet of OMC and dry of OMC
c) wet of OMC and wet of OMC
d) dry of OMC and dry of OMC where OMC is optimum moisture content
Ans:b
84. Select the incorrect statement.
a) Effective cohesion of a soil can never have a negative value.
b) Effective angle of internal friction for coarse grained soils is rarely below 30°.
c) Effective angle of internal friction for a soil increases as state of compact-ness increases.
d) Effective angle of internal friction is a complicated function of mineralogy and clay size content.
Ans:a
85. For a loose sand sample and a dense sand sample consolidated to the same effective stress
a) ultimate strength is same and also peak strength is same
b) ultimate strength is different but peak strength is same
c) ultimate strength is same but peak strength of dense sand is greater than that of loose sand
d) ultimate strength is same but peak
Ans:c
86. The shear strength of a soil
a) is directly proportional to the angle of internal friction of the soil
b) is inversely proportional to the angle of internal friction of the soil
c) decreases with increase in normal stress
d) decreases with decrease in normal stress
Ans:d
87. In a consolidated drained test on a normally consolidated clay, the volume of the soil sample during shear
a) decreases
b) increases
c) remains unchanged
d) first increases and then decreases
Ans:a
88. Skempton's pore pressure coefficient B for saturated soil is
a) 1
b) zero
c) between 0 and 1
d) greater than 1
Ans:a
89. Shear strength of a soil is a unique function of
a) effective stress only
b) total stress only
c) both effective stress and total stress
d) none of the above
Ans:a
90. In a deposit of normally consolidated clay
a) effective stress increases with depth but water content of soil and un-drained strength decrease with depth
b) effective stress and water content increase with depth but undrained strength decreases with depth
c) effective stress and undrained strength increase with depth but water content decreases with depth
d) effective stress, water content and undrained strength decrease with depth
Ans:c
Read More Soil Mechanics and Foundation Engineering Questions:
Part1 Part2 Part3 Part4 Part5 Part6 Part7 Part8 Part9 Part10
No comments:
Post a Comment