# Civil Engineering - Soil Mechanics and Foundation Engineering

### Exercise :: Soil Mechanics and Foundation Engineering - Section 1

11.

Minimum size of the particles of silt soil, is

 A. 0.002 mm B. 0.04 mm C. 0.06 mm. D. 0.08 mm E. 1 mm

Explanation:

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12.

The maximum value of effective stress in the past divided by the present value, is defined as over consolidation ratio (OCR). The O.C.R. of an over consolidated clay is

 A. less than 1 B. 1 C. more than 1 D. None of these.

Explanation:

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13.

If Nf, Nd and H are total number flow channels, total number of potential drops and total hydraulic head differences respectively, the discharge q through the complete flow is given by (where K is a constant)

 A. B. C. D. Explanation:

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14.

A flow line makes angles θ1 and θ2 with the normal to the interface of the soils having permeabilities k1, k2 before and after deflection. According to the law of deflection of the flow lines at the interface of the dissimilar soils

 A. B. C. D. Explanation:

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15.

Under-reamed piles are generally

 A. driven piles B. bored piles C. precast piles D. all the above.