इन्जिनियरिङ काउन्सिल (NEC) – Engineering Council (NEC) MCQ
इन्जिनियरिङ काउन्सिल (NEC) – लाइसेन्स परीक्षा
Engineering Council (NEC) · Nepal Professional License Exams · ५९७ प्रश्न
५९७ प्रश्न उपलब्ध। मोड छान्नुहोस्:
इन्जिनियरिङ काउन्सिल (NEC): 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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In plane table surveying, finding the position of the instrument station on the sheet by sighting three well-defined points already plotted is called the:
सही उत्तर: क) Three-point problem (resection)
The three-point problem is a resection method that locates the occupied station from three known plotted points.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Retention money deducted from a contractor's running bills is mainly intended to:
सही उत्तर: घ) Secure the employer against defects and non-fulfilment of the contractor's obligations
A percentage is retained from each payment and released after completion and the defects liability period as security for remedying defects.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The soil moisture content held after free drainage of gravity water has practically ceased is called the:
सही उत्तर: ग) Field capacity
Field capacity is the water retained against gravity; available water for plants lies between field capacity and wilting point.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A cross-drainage work in which a natural drain passes OVER an irrigation canal is called a:
सही उत्तर: ख) Super-passage
In a super-passage the drain is carried above the canal; in an aqueduct the canal is carried over the drain.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In Lacey's regime theory, the silt factor f is related to the mean particle diameter mr (in mm) by:
सही उत्तर: क) f = 1.76√mr
Lacey's silt factor is f = 1.76√mr, where mr is the mean diameter of bed particles in millimetres.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Bligh's creep theory is used in the design of:
सही उत्तर: घ) Weirs on permeable foundations against piping
Bligh's theory assumes that seepage water creeps along the base contour of a weir; the creep length must be enough to prevent piping.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In run-of-river hydropower projects in Nepal, the structure after the intake that removes suspended sediment before water enters the headrace or penstock is the:
सही उत्तर: ग) Desanding (settling) basin
A desander slows the flow so that sediment settles out, protecting turbines from abrasion by the heavy silt loads of Himalayan rivers.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a hydropower scheme, a surge tank is provided mainly to:
सही उत्तर: ख) Reduce water hammer pressures in the conduit during sudden load changes
A surge tank absorbs pressure surges when turbine flow changes suddenly, protecting the headrace/penstock from water hammer.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A hydropower plant uses a discharge of 10 m³/s under a net head of 50 m with an overall efficiency of 90%. Its power output is about (ρ = 1000 kg/m³, g = 9.81 m/s²):
सही उत्तर: क) 4.41 MW
P = ηρgQH = 0.9 × 1000 × 9.81 × 10 × 50 ≈ 4,414,500 W ≈ 4.41 MW.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Hydraulic models of spillways, rivers and open channels, where gravity forces dominate, are designed on the basis of similarity of the:
सही उत्तर: घ) Froude number
In free-surface flows gravity and inertia dominate, so model and prototype are made to have equal Froude numbers.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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