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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The Blaney-Criddle method is used to estimate:
सही उत्तर: क) Consumptive use (evapotranspiration) of crops
Blaney-Criddle relates consumptive use to mean temperature and percentage of daytime hours with a crop coefficient.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In river training works, groynes (spurs) are structures that:
सही उत्तर: क) Project from the bank into the river to deflect the current away from the bank
Groynes are built transverse to the flow from the bank to keep the main current away and encourage silting near the bank.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A structure built across a canal to raise and control the water level upstream so that off-taking channels can draw their supply is a:
सही उत्तर: ख) Cross regulator
A cross regulator controls the water level in the parent canal; the head regulator at the off-take controls the flow into the branch.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A canal outlet whose discharge remains constant within limits, independent of the water levels in both the distributary and the watercourse, is a:
सही उत्तर: ग) Rigid module
A rigid module gives a constant discharge regardless of upstream and downstream levels; a semi-module is independent only of the watercourse level.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The first watering given to a crop after it has grown a few centimetres high, which usually governs canal design capacity, is called:
सही उत्तर: घ) Kor watering
Kor watering is the first watering after sowing when the plants are a few centimetres high; the kor depth and period fix the outlet discharge.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The ratio of the area actually irrigated in a crop season to the culturable command area, expressed as a percentage, is called the:
सही उत्तर: घ) Intensity of irrigation
Intensity of irrigation is the percentage of the CCA proposed or actually irrigated in a season; duty relates area to discharge.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The Gumbel extreme value distribution is widely used in hydrology for:
सही उत्तर: क) Frequency analysis of annual maximum floods
Gumbel's method fits annual maximum series to estimate floods of given return periods, such as the 100-year flood.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The transmissivity T of a confined aquifer of saturated thickness b and hydraulic conductivity K is:
सही उत्तर: ख) T = K b
Transmissivity is the rate of flow through a unit width of the full aquifer thickness under unit gradient, T = Kb (units m²/day).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Horton's equation in hydrology describes the:
सही उत्तर: ग) Decrease of infiltration capacity with time during a storm
Horton's equation f = fc + (f0 − fc)e^(−kt) gives infiltration capacity decaying exponentially from an initial to a constant rate.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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For the most economical (efficient) trapezoidal channel section, the hydraulic radius is equal to:
सही उत्तर: ग) Half the depth of flow
For the best trapezoidal (and rectangular) section, R = y/2, and the sloping sides are tangential to a semicircle centred on the water surface.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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