Explore topic-wise MCQs in Geotechnical Engineering.

This section includes 214 Mcqs, each offering curated multiple-choice questions to sharpen your Geotechnical Engineering knowledge and support exam preparation. Choose a topic below to get started.

201.

The compression index is given by _________

A. \(C_c=\frac{e_0-e}{log_{10} \frac{σ’}{σ’_0}}\)
B. \(C_c=\frac{e}{log_{10} \frac{σ’}{σ’_0}}\)
C. \(C_c=\frac{e_0-e}{\frac{σ’}{σ’_0}}\)
D. \(C_c=\frac{e_0}{log_{10} \frac{σ’}{σ’_0}}\)
Answer» B. \(C_c=\frac{e}{log_{10} \frac{σ’}{σ’_0}}\)
Discussion
202.

The difference in voids ratio ∆e of initial and increased pressure is given by __________

A. \(∆e=log_{10}\frac{σ’_0+∆σ’}{σ’_0}\)
B. \(∆e=C_c \frac{σ’_0+∆σ’}{σ’_0}\)
C. \(∆e=C_c log_{10} \frac{σ’_0+∆σ’}{σ’_0}\)
D. \(∆e=C_c log_{10} \frac{σ’_0}{σ’_0} \)
Answer» D. \(∆e=C_c log_{10} \frac{σ’_0}{σ’_0} \)
Discussion
203.

The expansion index is a ‘curve’ on semi log plot.

A. True
B. False
C. May be True or False
D. Can't say
Answer» C. May be True or False
Discussion
204.

The expansion index is also known as ___________

A. compressibility index
B. compression index
C. swelling index
D. consolidation index
Answer» D. consolidation index
Discussion
205.

The straight portion of the virgin compression curve is given by the empirical formula _______________

A. \(e = e_0*\frac{C_c log_{10} σ’}{σ’_0}\)
B. \(e = \frac{e_0}{\frac{C_c log_{10} σ’}{σ’_0}}\)
C. \(e = e_0-\frac{C_c log_{10} σ’}{σ’_0}\)
D. \(e = e_0+\frac{C_c log_{10} σ’}{σ’_0}\)
Answer» D. \(e = e_0+\frac{C_c log_{10} σ’}{σ’_0}\)
Discussion
206.

In a semi logarithmic plot, the virgin compression curve becomes

A. straight line
B. parabolic curve
C. hyperbolic curve
D. elliptical curve
Answer» B. parabolic curve
Discussion
207.

The virgin compression curve is the curve between _______________

A. voids ratio and effective pressure
B. effective pressure and total pressure
C. effective pressure and pore pressure
D. total pressure and total pressure
Answer» B. effective pressure and total pressure
Discussion
208.

If a soil is confined in a consolidometer, then at equilibrium stage, the applied pressure is equal to ____________

A. zero
B. effective pressure
C. total pressure
D. pore pressure
Answer» C. total pressure
Discussion
209.

The compression index is a dimensionless quantity.

A. True
B. False
C. May be True or False
D. Can't say
Answer» B. False
Discussion
210.

In finding pre-consolidation pressure, initial portion of curve resembles ___________

A. recompression curve of remolded sample
B. swelling curve
C. expansion curve
D. laboratory virgin curve
Answer» B. swelling curve
Discussion
211.

In determination of one-dimensional consolidation as shown in the figure, the line CD represents ___________

A. at initial time t₀, u̅=∆σ
B. at initial time t₀, u̅=0
C. at final time tf, u̅=∆σ
D. at final time tf, u̅=0
Answer» B. at initial time t₀, u̅=0
Discussion
212.

In the spring analogy of consolidation, cylinder is filled with water up to bottom of piston and spring carries 10 units of load. If external two units of load is applied and the valve closed, then the effective pressure σ’ and hydrodynamic pressure u̅ is given by ___________

A. σ’=0, u̅ =12
B. σ’=0, u̅ =0
C. σ’=10, u̅ =2
D. σ’=12, u̅ =0
Answer» D. σ’=12, u̅ =0
Discussion
213.

In the spring analogy of consolidation, cylinder is filled with water up to bottom of piston and spring carries 10 units of load. If external two units of load is applied and the valve is partly opened, then the effective pressure σ’ and hydrodynamic pressure u̅ is given by ___________

A. σ’=0, u̅ =12
B. σ’=10+∆σ’, u̅ =2-∆σ’
C. σ’=10, u̅ =2
D. σ’=12, u̅ =0
Answer» C. σ’=10, u̅ =2
Discussion
214.

In the spring analogy of consolidation, cylinder is filled with water up to bottom of piston and spring carries 10 units of load. If external two units of load is applied and the valve is opened, then the effective pressure σ’ and hydrodynamic pressure u̅ is given by ___________

A. σ’=0, u̅=12
B. σ’=10+∆σ’, u̅=2-∆σ’
C. σ’=10, u̅=2
D. σ’=12, u̅=0
Answer» E.
Discussion