इन्जिनियरिङ सेवा सब-इन्जिनियर (पाँचौँ तह) – प्राविधिक पत्र
इन्जिनियरिङ सेवा – सब-इन्जिनियर (पाँचौँ तह)
Sub-Engineer – 5th 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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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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Water hammer in a pipeline is mainly caused by:
सही उत्तर: ख) Sudden closure of a valve
Sudden stopping of flow creates a pressure surge known as water hammer.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Using the rational formula, the peak runoff from a 100 ha catchment with runoff coefficient 0.5 and rainfall intensity 72 mm/h is:
सही उत्तर: ग) 10 m³/s
Q = CIA/360 = 0.5 × 72 × 100/360 = 10 m³/s (A in ha, I in mm/h).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The SI unit of dynamic viscosity is:
सही उत्तर: क) N·s/m² (Pa·s)
Dynamic viscosity is shear stress divided by velocity gradient, giving N·s/m² or Pa·s.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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For laminar flow in a pipe with Reynolds number 1600, the Darcy friction factor is:
सही उत्तर: ख) 0.04
For laminar flow f = 64/Re = 64/1600 = 0.04.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A Pelton wheel is classified as a/an:
सही उत्तर: ग) Impulse turbine suitable for high heads
In a Pelton wheel the whole available head is converted to jet velocity before striking the buckets, making it an impulse turbine used at high heads.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Water flows through a pipe of diameter 0.2 m and length 100 m at a velocity of 2 m/s. If the Darcy friction factor is 0.02, the head loss due to friction is about:
सही उत्तर: क) 2.04 m
hf = 0.02 × 100 × 2²/(2 × 9.81 × 0.2) ≈ 2.04 m.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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For a vertical rectangular surface with its top edge at the free water surface and height H, the centre of pressure lies at a depth of:
सही उत्तर: घ) 2H/3 below the free surface
The triangular pressure distribution has its resultant at 2H/3 from the free surface.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Reynolds number represents the ratio of:
सही उत्तर: ख) Inertia force to viscous force
Re = ρVD/μ compares inertial forces with viscous forces.
💬 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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