Soil Mechanics and Foundation Engineering - Section 1 (3)

Directions to Solve

Soil Mechanics and Foundation Engineering - Section 1

Here in this portion, you will get all the
basic and important MCQs which are based on this topic.

17.

If S, L and R are the arc length, long chord and radius of the sliding circle then the perpendicular distance of the line of the resultant cohesive force, is given by

A.
B.
C.
D.	none of these.

Answer: Option A

Explanation:

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18.

Pick up the correct statement from the following :

A.	In soils, the flow index indicates variation in shear strength with water content
B.	Liquid limit minus plastic limit, is known as plasticity index of the soil
C.	Plastic limit minus shrinkage limit, is known as shrinkage index of the soil
D.	The ratio of the plasticity index to the flow limit, is known as toughness index of the soil
E.	All the above.

Answer: Option E

Explanation:

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19.

Pick up the correct statement from the following:

A.	When water table is above the base of a footing, the dry weight m should be used for soil below water table
B.	When water table is located somewhat below the base of a footing, the elastic wedge is partly of moist soil and partly of submerged soil, and a suitable reduction factor is used
C.	When water table is just at the base of the footing, no reduction factor is used
D.	None of these.

Answer: Option B

Explanation:

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20.

Stoke's law sates that the velocity at which a grain settles out of suspension, the other factors remaining constant, is dependent upon

A.	shape of grain
B.	weight of grain
C.	size of grain
D.	shape and size of grain
E.	shape, size and weight of grain.

Answer: Option E

Explanation:

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21.

Accurate determination of water content, is made by

A.	calcium carbide method
B.	sand bath method
C.	alcohol method
D.	oven-drying method.

Answer: Option D

Explanation:

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22.

The water content of soil is defined as the ratio of

A.	volume of water to volume of given soil
B.	volume of water to volume of voids in soil
C.	weight of water to weight of air in voids
D.	weight of water to weight of solids of given mass of soil.

Answer: Option D

Explanation:

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23.

Rankine's theory of active earth pressure assumes

A.	soil mass is homogeneous, dry and cohesionless
B.	ground surface is a plane which may be horizontal or inclined
C.	back of the wall is vertical and smooth
D.	wall yields about the base
E.	all the above.

Answer: Option E

Explanation:

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24.

If the failure of a finite slope occurs through the toe, it is known as

A.	slope failure
B.	face failure
C.	base failure
D.	toe failure.

Answer: Option D

Explanation:

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