Geotechnical Engineering (3130606) MCQs

MCQs of Compaction & Consolidation of Soil

Showing 31 to 40 out of 53 Questions
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31.

The Cc for ordinary clay of medium to low sensitivity, the value of Cc corresponding to the field consolidation line is given by ______

(a)

Cc=0.009(wL-10%)
(b)

Cc=0.007(wL-10%)
(c)

Cc=0.007(wL-20%)
(d)

Cc=0.007(wL-30%)
Answer:

Option (a)

32.

The equation for pre-compressed soil given by Hough (1957) is ______

(a)

Cc=0.009(wL-10%)
(b)

 Cc=0.007(wL-10%)
(c)

 Cc=0.3(e0-0.27)
(d)

Cc=0.007(wL-30%)
Answer:

Option (c)

33.

 For a given difference in pressure, the value of av _______ as pressure increases.

(a)

 increases
(b)

decreases
(c)

is same
(d)

becomes unity
Answer:

Option (b)

34.

The coefficient of volume change mv is also known as ______________

(a)

coefficient of compressibility
(b)

coefficient of volume compressibility
(c)

compression index
(d)

expansion index
Answer:

Option (b)

35.

The relation between mv and av is __________

(a)

mv=ave0
(b)

mv=av1+Δσ′
(c)

mv=av1+e0
(d)

mv=1e0av1+e0
Answer:

Option (c)

36.

When the soil is laterally confined, the changes in volume is ______

(a)

 proportional to change in thickness ∆H
(b)

 inversely proportional to change in thickness ∆H
(c)

equal to change in thickness ∆H
(d)

does not depend upon the thickness
Answer:

Option (a)

37.

The change in thickness due to pressure increment is given by ______

(a)

∆H = -mv Ho ∆σ’
(b)

∆H = -mv ∆σ’
(c)

∆H = -mv Ho
(d)

∆H = -Ho ∆σ’
Answer:

Option (a)

38.

The minus sign in the change expression for the change in thickness ∆H = -mv Ho ∆σ’ denotes ______

(a)

thickness decreases with an increase in pressure
(b)

thickness decreases with a decrease in pressure
(c)

thickness increases with an increase in pressure
(d)

thickness does not change with an increase in pressure
View Answer
Answer:

Option (a)

39.

The consolidation settlement can be computed by ______

(a)

using the coefficient of volume change only
(b)

using the voids ratio only
(c)

 using both Using coefficient of volume change and voids ratio
(d)

using compression index only
Answer:

Option (c)

40.

The consolidation settlement ρf for a soil stature of thickness H that has fully consolidated index, a pressure increment ∆σ’ with respect to mv is given by ____________

(a)

 ρf=mv H
(b)

ρf=H∆σ’
(c)

ρf=mv H∆σ’
(d)

ρf=mv ∆σ’
Answer:

Option (c)

Showing 31 to 40 out of 53 Questions
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