इन्जिनियरिङ सेवा असिस्टेन्ट सब-इन्जिनियर (चौथो तह) – प्राविधिक पत्र
इन्जिनियरिङ सेवा – असिस्टेन्ट सब-इन्जिनियर (चौथो तह)
Assistant Sub-Engineer – 4th Level · Engineering Service
५०३ प्रश्न उपलब्ध। मोड छान्नुहोस्:
प्राविधिक पत्र: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ५ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
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For the most economical rectangular channel section, the bottom width (b) and depth of flow (y) are related as:
सही उत्तर: क) b = 2y
Minimising wetted perimeter for a given area gives b = 2y, i.e. R = y/2.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The amount of water held in the soil after excess gravity water has drained away is called:
सही उत्तर: ख) Field capacity
Field capacity is the moisture remaining after free drainage of gravitational water.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The discharge through a non-modular canal outlet depends on:
सही उत्तर: ग) The difference between water levels in the distributary and the watercourse
A non-modular outlet's discharge varies with the head difference between the distributary and the watercourse.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The total hydrostatic force per metre width on a vertical wall retaining water to a depth of 4 m (ρ = 1000 kg/m³, g = 9.81 m/s²) is:
सही उत्तर: ग) 78.48 kN
F = ρgH²/2 = 9.81 × 16/2 = 78.48 kN per metre width.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The available moisture for plants lies between:
सही उत्तर: ग) Field capacity and permanent wilting point
Available water is the moisture between field capacity and permanent wilting point.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Culturable commanded area (CCA) of a canal is:
सही उत्तर: घ) Gross commanded area minus unculturable area
CCA excludes roads, villages, ponds and other unculturable land from the GCA.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The profile of an ogee spillway crest is shaped to follow the:
सही उत्तर: क) Lower nappe of a free-falling jet over a sharp-crested weir
Matching the lower nappe keeps the overflowing water in contact with the crest without excessive negative pressure.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The discharge over a triangular (V) notch is proportional to the head H raised to the power:
सही उत्तर: क) 5/2
For a V-notch Q = (8/15) Cd √(2g) tan(θ/2) H^(5/2).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Among the following crops, the one with the largest delta (water requirement) is generally:
सही उत्तर: ख) Rice (paddy)
Paddy needs standing water for much of its growth and has a much larger delta than these cereals or oilseeds.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The power output of a hydropower plant with discharge 10 m³/s, net head 50 m and overall efficiency 80% (g = 9.81 m/s²) is about:
सही उत्तर: ग) 3.92 MW
P = ρgQHη = 1000 × 9.81 × 10 × 50 × 0.8 ≈ 3.92 MW.
💬 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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