सिभिल इन्जिनियरिङ
सिभिल इन्जिनियरिङ
Civil Engineering · ५,१७१ प्रश्न
५,१७१ प्रश्न उपलब्ध। मोड छान्नुहोस्:
सिभिल इन्जिनियरिङ: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
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The instrument used for measuring atmospheric pressure is the:
सही उत्तर: क) Barometer
A barometer measures atmospheric pressure; a Bourdon gauge and piezometer measure gauge pressure.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A mercury–water differential manometer connected across a venturimeter shows a mercury deflection of 100 mm. The difference in piezometric head of water is:
सही उत्तर: घ) 1.26 m
h = x(Sm/S − 1) = 0.1 × (13.6 − 1) = 1.26 m of water.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A pressure head of 2 m of oil of specific gravity 0.8 is equivalent to a head of water of:
सही उत्तर: ग) 1.6 m
Equal pressure: h(water) = h(oil) × S = 2 × 0.8 = 1.6 m.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A pressure of 1 bar (10⁵ Pa) expressed as head of water (g = 9.81 m/s²) is about:
सही उत्तर: ख) 10.2 m
h = p/(ρg) = 10⁵/(1000 × 9.81) ≈ 10.2 m of water.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Standard atmospheric pressure expressed as a head of water is about:
सही उत्तर: क) 10.3 m
101.3 kPa/(1000 × 9.81) ≈ 10.3 m of water (equivalent to 760 mm of mercury).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The excess pressure inside a small liquid droplet of diameter d with surface tension σ is:
सही उत्तर: ग) 4σ/d
For a droplet Δp = 2σ/r = 4σ/d; a soap bubble has two surfaces, so Δp = 8σ/d.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A fluid that is assumed to be incompressible and to have no viscosity is called:
सही उत्तर: ख) An ideal fluid
An ideal fluid has zero viscosity and is incompressible; all real fluids have some viscosity.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Water has its maximum density at a temperature of about:
सही उत्तर: घ) 4 °C
Pure water is densest (about 1000 kg/m³) at about 4 °C; this is why lakes freeze from the top.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Preloading (surcharging) of a soft clay site before construction is done mainly to:
सही उत्तर: ख) Cause most of the consolidation settlement to occur before the structure is built
A temporary surcharge consolidates the clay in advance, so post-construction settlement is reduced and strength increases.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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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)
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।
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