Consolidation Process MCQs : Here you will find MCQ Questions related to "Consolidation Process" in Geotechnical Engineering. These Consolidation Process MCQ Questions Will help you to improve your Geotechnical Engineering knowledge and will prepare you for various Examinations like Competitive Exams, Placements, Interviews and other Entrance Exmaniations.
Question 1
When a compressive load is applied to a soil mass, a _____________ in its volume takes place
A. increase
B. decrease
C. equal
D. Can not say
View Answer
Ans : B
Explanation: When a compressive load is applied to a soil mass, a decrease in its volume takes place. The decrease in volume of soil mass under stress is known as compression.
Question 2
The property of soil mass pertaining to its susceptibility to decrease in volume under pressure is ____________
A. compression
B. compressibility
C. tension
D. consolidation
View Answer
Ans : B
Explanation: When a compressive load is applied to a soil mass, a decrease in its volume takes place. The decrease in volume of soil mass under stress is known as compression and the property of soil mass pertaining to its susceptibility to decrease in volume under pressure is compressibility.
Question 3
Every process involving a decrease in the water content of a saturated soil without replacement of water by air is the process of?
A. consolidation
B. compressibility
C. tension
D. compression
View Answer
Ans : A
Explanation: According to Terzaghi, every process involving a decrease in the water content of a saturated soil without replacement of water by air is the process of consolidation.
Question 4
The pressure that builds up in pore water due to load increment in the soil is termed as?
A. effective pressure
B. seepage pressure
C. excess pore pressure
D. total pressure
View Answer
Ans : C
Explanation: The pressure that builds up in pore water due to load increment in the soil is termed as excess pore pressure. Excess pore pressure is also known as excess hydrostatic pressure or hydrodynamic pressure.
Question 5
The expansion index is also known as swelling index and is represented by ?
A. Ca
B. Cb
C. Cp
D. Cs
View Answer
Ans : D
Explanation: The expansion index is also known as swelling index and is represented by Cs. The expansion curve is a fairly straight line on semi log plot. The expansion index is a measure of volume increase due to the removal of pressure.
Question 6
Which of the following is false?
A. The expansion index is a curve on semi log plot.
B. The compression index is a dimensionless quantity
C. The virgin compression curve is the curve between voids ratio and effective pressure.
D. All of the above
View Answer
Ans : A
Explanation: The expansion index is a fairly straight line on semi log plot. The expansion index is a measure of volume increase due to the removal of pressure. The expansion index is also a dimensionless quantity like the compression index.
Question 7
In a semi logarithmic plot, the virgin compression curve becomes
A. straight line
B. parabolic curve
C. hyperbolic curve
D. elliptical curve
View Answer
Ans : A
Explanation: In a semi logarithmic plot, the virgin compression curve becomes a straight line if the curve is plotted with effective pressure σ’as abscissa and the voids ratio e as ordinate on an arithmetic scale.
Question 8
coefficient of compressibility denoted by?
A. Ax
B. Az
C. Ap
D. Av
View Answer
Ans : D
Explanation: The coefficient of compressibility Av is defined as the decrease in voids ratio per unit increase of pressure. Therefore, for a given difference in pressure, the value of av decreases as pressure increases.
Question 9
The coefficient of volume change mv is also known as ______________
A. coefficient of compressibility
B. compression index
C. coefficient of volume compressibility
D. expansion index
View Answer
Ans : C
Explanation: The coefficient of volume change mv is also known as coefficient of volume compressibility. The compression index is denoted by Cc and the expansion index is denoted by Cs.
Question 10
For an ordinary clay of medium to low sensitivity, the value of Cc corresponding to the field consolidation line is roughly equal to __________ the compression index of remolded sample.
A. 1
B. 1.1
C. 1.2
D. 1.3
View Answer
Ans : D
Explanation: For an ordinary clay of medium to low sensitivity, the value of Cc corresponding to the field consolidation line is roughly equal to 1.3 times the compression index of remolded sample.