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 gauge pressure at a depth of 5 m below the free surface of water (ρ = 1000 kg/m³, g = 9.81 m/s²) is:
सही उत्तर: ख) 49.05 kPa
p = ρgh = 1000 × 9.81 × 5 = 49,050 Pa = 49.05 kPa.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A canal aligned along the watershed (ridge line) of an area has the main advantage that:
सही उत्तर: क) Cross-drainage works are largely avoided
Natural drains originate on either side of the ridge, so a ridge canal seldom crosses them.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A venturimeter is used to measure:
सही उत्तर: ख) Discharge through a pipe
A venturimeter measures pipe discharge from the pressure difference between inlet and throat.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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According to Bligh's creep theory, the minimum creep length required for a weir with a head of 4 m and Bligh's creep coefficient 12 is:
सही उत्तर: घ) 48 m
L = C × H = 12 × 4 = 48 m.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Lines joining points of equal rainfall on a map are called:
सही उत्तर: क) Isohyets
Isohyets are lines of equal rainfall depth.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a hydropower scheme, a surge tank is provided mainly to:
सही उत्तर: ग) Protect the penstock from water hammer pressure
A surge tank absorbs pressure rise from sudden load rejection and reduces water hammer in the penstock.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The Darcy–Weisbach equation for head loss due to friction in a pipe is:
सही उत्तर: घ) hf = fLV²/(2gD)
Darcy–Weisbach gives hf = fLV²/(2gD), with f the Darcy friction factor.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A soil has field capacity 30%, permanent wilting point 12% (by dry weight) and dry unit weight 1.5 times that of water. The maximum depth of available water in a root zone of 0.8 m is:
सही उत्तर: घ) 216 mm
d = (γd/γw) × D × (FC − PWP) = 1.5 × 0.8 × 0.18 = 0.216 m = 216 mm.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A unit hydrograph is the direct runoff hydrograph resulting from:
सही उत्तर: ख) One unit depth (e.g. 1 cm) of effective rainfall of a specified duration spread uniformly over the catchment
A unit hydrograph corresponds to unit depth of excess rainfall of a given duration.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A canal has a CCA of 8000 ha and the intensity of irrigation for the Rabi season is 50%. The area to be irrigated in Rabi is:
सही उत्तर: क) 4000 ha
Area irrigated = CCA × intensity = 8000 × 0.5 = 4000 ha.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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