नेपाल व्यावसायिक लाइसेन्स फार्मेसी र स्वास्थ्य व्यवसायी काउन्सिल लाइसेन्स तयारी
नेपाल व्यावसायिक लाइसेन्स – फार्मेसी र स्वास्थ्य व्यवसायी काउन्सिल लाइसेन्स
NPC & NHPC License · Nepal Professional License Exams
२,४१४ प्रश्न उपलब्ध। मोड छान्नुहोस्:
लाइसेन्स परीक्षा: 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 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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In a rectangular channel, the loss of energy in a hydraulic jump with sequent depths y1 and y2 is:
सही उत्तर: घ) (y2 − y1)³ / (4 y1 y2)
Combining momentum and energy equations for a rectangular channel gives the head loss EL = (y2 − y1)³/(4 y1 y2).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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When two identical centrifugal pumps are operated in parallel instead of one pump alone, the main effect is that:
सही उत्तर: क) The discharge is increased for the same head
In parallel the pumps work against the same head and their discharges add; series operation adds heads at the same discharge.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Priming of a centrifugal pump means:
सही उत्तर: ख) Filling the suction pipe, casing and impeller with the liquid before starting
A centrifugal pump cannot develop enough suction with air in the casing, so it must be filled with liquid (primed) before starting.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A draft tube is an essential part of which turbines?
सही उत्तर: ख) Reaction turbines such as Francis and Kaplan
In reaction turbines the draft tube allows the runner to be placed above tail water and recovers kinetic energy at exit; impulse turbines discharge to atmosphere.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The specific speed of a hydraulic turbine (N in rpm, power P, net head H) is given by:
सही उत्तर: ग) N√P / H^(5/4)
Turbine specific speed Ns = N√P/H^(5/4); the form N√Q/H^(3/4) is used for pumps.
💬 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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