इन्जिनियरिङ काउन्सिल (NEC) – Engineering Council (NEC) MCQ

इन्जिनियरिङ काउन्सिल (NEC): प्रश्न र उत्तर

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सही: ० / ०

41. Coulomb's wedge theory of earth pressure differs from Rankine's theory mainly because it:

    कAssumes the wall back is perfectly smooth and vertical खApplies only to cohesive soils गIgnores the weight of the soil wedge घTakes into account friction between the wall and the backfill
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

42. A 'pressure bulb' in soil mechanics is:

    कAn instrument for measuring pore water pressure खThe zone of failure under a footing at ultimate load गThe capillary zone above the water table घThe zone below a loaded area enclosed by a line of equal vertical stress
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    टिप्पणी जाँचपछि मात्र देखिन्छ।

43. In sinking well foundations for bridges, the terms 'tilt' and 'shift' refer to:

    कDeviation of the well from vertical and displacement of its position from the intended location खSettlement of the well under service loads गThe two stages of concreting the well steining घScour depth below the riverbed
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    छलफल / प्रश्न उत्तरमा गल्ती छ

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    टिप्पणी जाँचपछि मात्र देखिन्छ।

44. Wash boring as a method of soil exploration involves:

    कDriving a closed-end cone and measuring its resistance खAdvancing a borehole by chopping and jetting the soil out of the hole with a stream of water गExcavating an open pit to the required depth घRotating a core barrel with a diamond bit into rock
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45. For obtaining good quality undisturbed soil samples, the area ratio of a sampling tube should generally not exceed about:

    क25% ख50% ग10% घ1%
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    छलफल / प्रश्न उत्तरमा गल्ती छ

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    टिप्पणी जाँचपछि मात्र देखिन्छ।

46. If the water table rises from great depth up to the base of a shallow footing on sand, the Nγ term of its ultimate bearing capacity is reduced by about:

    क25% ख75% ग50% घ100%
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    टिप्पणी जाँचपछि मात्र देखिन्छ।

47. For a strip footing on a purely cohesive soil (φ = 0), Terzaghi's bearing capacity factor Nc is:

    क5.14 ख1.0 ग9.0 घ5.7
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48. The triaxial test in which drainage is permitted during both the consolidation stage and the shearing stage is the:

    कConsolidated drained (CD) test खUnconsolidated undrained (UU) test गConsolidated undrained (CU) test घUnconfined compression test
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49. A 'quick sand' (boiling) condition develops in a cohesionless soil when:

    कThe soil is dried below its shrinkage limit खUpward seepage pressure reduces the effective stress to zero गDownward seepage increases the effective stress घThe soil contains a high proportion of clay minerals
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50. Increasing the compactive effort applied to a given soil generally:

    कIncreases the maximum dry density and increases the optimum moisture content खIncreases the maximum dry density and decreases the optimum moisture content गDecreases the maximum dry density and decreases the optimum moisture content घHas no effect on the compaction curve
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    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।