माटो र जग – Soil Mechanics & Foundation MCQ
माटो र जग – सिभिल इन्जिनियरिङ
Soil Mechanics & Foundation · Civil Engineering · ४०८ प्रश्न
४०८ प्रश्न उपलब्ध। मोड छान्नुहोस्:
माटो र जग: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
-
Lime stabilisation is most suitable for improving:
सही उत्तर: ख) Clayey soils of medium to high plasticity
Lime reacts with clay minerals (cation exchange, flocculation, pozzolanic reaction), reducing plasticity and increasing strength.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
In the context of geosynthetics, the main function of a geotextile placed between a soft subgrade and a granular sub-base is:
सही उत्तर: ग) Separation, preventing intermixing of the two layers
The geotextile keeps the fine subgrade from pumping into the aggregate and the aggregate from punching into the subgrade; it also filters and drains.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Bishop's simplified method of slope stability analysis is a type of:
सही उत्तर: क) Method of slices for circular slip surfaces
Bishop's simplified method divides the slip mass into slices and considers inter-slice normal forces, giving a better FOS than the ordinary (Fellenius) method.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
For a cohesionless infinite slope (φ = 30°, slope 20°) with steady seepage parallel to the slope and water table at the surface (γsat = 20, γw = 10 kN/m³), the factor of safety is about:
सही उत्तर: घ) 0.79
F = (γ'/γsat)(tanφ/tani) = (10/20)(0.577/0.364) ≈ 0.79, about half the dry value of 1.59.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
A slope 10 m high in clay (c = 24 kPa, φ = 0, γ = 20 kN/m³) has Taylor's stability number Sn = 0.06. The factor of safety with respect to cohesion is:
सही उत्तर: घ) 2.0
Sn = c/(F·γ·H), so F = c/(Sn·γ·H) = 24/(0.06 × 20 × 10) = 2.0.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Thin-walled Shelby tubes are mainly used to obtain:
सही उत्तर: ग) Undisturbed samples of soft to medium cohesive soils
Thin walls give a low area ratio and little disturbance, suiting soft to medium clays.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The seismic refraction method of geophysical exploration is based on the:
सही उत्तर: क) Different velocities of shock waves in different strata
Seismic refraction measures arrival times of refracted waves; layer boundaries are inferred from changes in wave velocity.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The Static Cone Penetration Test (Dutch cone test) measures:
सही उत्तर: ग) Cone tip resistance and sleeve (side) friction as the cone is pushed into the soil
The cone is pushed at a steady rate and records point resistance qc and frictional resistance, giving a continuous soil profile.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
In a soil sampler, the inside clearance is kept at about 1% to 3% mainly to:
सही उत्तर: घ) Reduce friction between the sample and the tube wall as the sample enters
A small inside clearance lets the sample expand slightly and reduces wall friction, lowering disturbance.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Rock Quality Designation (RQD) of a rock core is the percentage of the core run length made up of intact pieces each at least:
सही उत्तर: ग) 100 mm long
RQD = (sum of lengths of core pieces ≥ 100 mm)/(total length of core run) × 100.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।
नमस्ते! पाठ्यक्रम, सामान्य ज्ञान, भाषा परीक्षा वा कुनै प्रश्नको उत्तर बुझ्न सोध्नुहोस्।
AI ले गल्ती गर्न सक्छ। महत्वपूर्ण कुरा आधिकारिक स्रोतमा जाँच्नुहोस्।