MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Soil Mechanics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The intensities of pressure below a point load where r=0 on axis of loading is ____________ |
| A. | \(σ_z=\frac{0.4775Q}{z^2} \) |
| B. | \(σ_z=\frac{0.7Q}{z^2} \) |
| C. | \(σ_z=\frac{0.4775Q}{z^3} \) |
| D. | \(σ_z=\frac{0.8Q}{z}\) |
| Answer» B. \(σ_z=\frac{0.7Q}{z^2} \) | |
| 2. |
The Boussinesq influence factor is given by ____________ |
| A. | \(K_B=\frac{3Q}{2πz} \left[\frac{1}{1+(\frac{r}{z})^2} \right]^{5/2}\) |
| B. | \(K_B=\frac{3Q}{2π} \left[\frac{1}{1+(\frac{r}{z})^2} \right]^{\frac{5}{2}}\) |
| C. | \(K_B=\frac{3}{2π} \left[\frac{1}{1+(\frac{r}{z})^2} \right]^{\frac{5}{2}}\) |
| D. | \(K_B=\frac{3}{2πz} \left[\frac{1}{1+(\frac{r}{z})^2} \right]^{\frac{5}{2}}\) |
| Answer» D. \(K_B=\frac{3}{2πz} \left[\frac{1}{1+(\frac{r}{z})^2} \right]^{\frac{5}{2}}\) | |
| 3. |
The Boussinesq equation representing the tangential stress is ___________ |
| A. | \(τ_{rz}=\frac{3}{2πz^3} \left[\frac{1}{1+(\frac{r}{z})^2} \right]^{5/2}\) |
| B. | \(τ_{rz}=\frac{3Qr}{2π} \left[\frac{1}{1+(\frac{r}{z})^2} \right]^5\) |
| C. | \(τ_{rz}=\frac{3Qr}{2πz^3} \left[\frac{1}{1+(\frac{r}{z})^2} \right]^{\frac{5}{2}}\) |
| D. | \(τ_{rz}=\frac{3Q}{2πz^3} \left[\frac{1}{1+(\frac{r}{z})^2} \right]^2\) |
| Answer» D. \(τ_{rz}=\frac{3Q}{2πz^3} \left[\frac{1}{1+(\frac{r}{z})^2} \right]^2\) | |
| 4. |
The Boussinesq equation representing the vertical stress is ___________ |
| A. | \(σ_z=\frac{3}{2π} \left[\frac{1}{1+(\frac{r}{z})^2} \right]^{5/2}\) |
| B. | \(σ_z=\frac{3Q}{2π} \left[\frac{1}{1+(\frac{r}{z})^2} \right]^5\) |
| C. | \(σ_z=\frac{3Q}{2πz^2}\left[\frac{1}{1+(\frac{r}{z})^2} \right]^{\frac{5}{2}}\) |
| D. | \(σ_z=\frac{3Q}{2π} \left[\frac{1}{1+(\frac{r}{z})^2} \right]^2\) |
| Answer» D. \(σ_z=\frac{3Q}{2π} \left[\frac{1}{1+(\frac{r}{z})^2} \right]^2\) | |
| 5. |
The Boussinesq equation representing the polar radial stress is ___________ |
| A. | \(σ_R=\frac{3Q}{2} \frac{cosβ}{R^2} \) |
| B. | \(σ_R=\frac{3Q}{2π} \frac{cosβ}{R^2}\) |
| C. | \(σ_R=\frac{3Q}{2π} \frac{cosβ}{R}\) |
| D. | \(σ_R=\frac{3Q}{2π} \frac{cosβ}{R^3} \) |
| Answer» C. \(σ_R=\frac{3Q}{2π} \frac{cosβ}{R}\) | |
| 6. |
The assumption of Boussinesq equation is that the soil is ______________ |
| A. | elastic |
| B. | semi-elastic |
| C. | plastic |
| D. | semi-plastic |
| Answer» B. semi-elastic | |
| 7. |
The assumption made by Boussinesq in the solutions is by the ____________ |
| A. | theory of plasticity |
| B. | theory of elasticity |
| C. | yield point |
| D. | failure point |
| Answer» C. yield point | |
| 8. |
The problems due to stress distribution in soils due to a concentrated load was studied by _____________ |
| A. | G.B Airy |
| B. | Terzaghi |
| C. | Darcy |
| D. | Boussinesq |
| Answer» E. | |