81) With the increase in the amount of compaction energy

optimum water content increases but maximum dry density decreases

optimum water content decreases but maximum dry density increases

both optimum water content and maximum dry density increase

both optimum water content and maximum dry density decrease[ES 93]

Answer is:

optimum water content decreases but maximum dry density increases

Geotechnical Engineering MCQ with Answers

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82) The maximum dry density upto which any soil can be compacted depends upon

moisture content only

amount of compaction energy only

both moisture content and amount of compaction energy

none of the above

Answer is:

both moisture content and amount of compaction energy

83) For better strength and stability, the fine grained soils and coarse grained soils are compacted respectively as

dry of OMC and wet of OMC

wet of OMC and dry of OMC

wet of OMC and wet of OMC

dry of OMC and dry of OMC where OMC is optimum moisture content

Answer is:

wet of OMC and dry of OMC

84) Select the incorrect statement.

Effective cohesion of a soil can never have a negative value.

Effective angle of internal friction for coarse grained soils is rarely below 30°.

Effective angle of internal friction for a soil increases as state of compact-ness increases.

Effective angle of internal friction is a complicated function of mineralogy and clay size content.

Answer is:

Effective cohesion of a soil can never have a negative value.

85) For a loose sand sample and a dense sand sample consolidated to the same effective stress

ultimate strength is same and also peak strength is same

ultimate strength is different but peak strength is same

ultimate strength is same but peak strength of dense sand is greater than that of loose sand

ultimate strength is same but peak

Answer is:

ultimate strength is same but peak strength of dense sand is greater than that of loose sand

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81) With the increase in the amount of compaction energy

optimum water content decreases but maximum dry density increases

Geotechnical Engineering MCQ with Answers

Related Geotechnical Engineering MCQ with Answers

82) The maximum dry density upto which any soil can be compacted depends upon

both moisture content and amount of compaction energy

83) For better strength and stability, the fine grained soils and coarse grained soils are compacted respectively as

wet of OMC and dry of OMC

84) Select the incorrect statement.

Effective cohesion of a soil can never have a negative value.

85) For a loose sand sample and a dense sand sample consolidated to the same effective stress

ultimate strength is same but peak strength of dense sand is greater than that of loose sand

Geotechnical Engineering MCQ with Answers