नेपाल व्यावसायिक लाइसेन्स नेपाल नर्सिङ काउन्सिल लाइसेन्स तयारी
नेपाल व्यावसायिक लाइसेन्स – नेपाल नर्सिङ काउन्सिल लाइसेन्स
NNC License Exam · 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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In fully developed laminar flow through a circular pipe, the maximum velocity at the centre is how many times the mean velocity?
सही उत्तर: घ) 2
The velocity profile in Hagen-Poiseuille flow is parabolic, giving umax = 2 × mean velocity.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The force exerted by a water jet of cross-sectional area A and velocity V striking normally on a stationary flat plate is:
सही उत्तर: क) ρAV²
Force = mass flow rate × change of velocity = (ρAV) × V = ρAV², since the jet's normal velocity is destroyed.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The free surface of a liquid rotating with its container as a forced vortex takes the shape of a:
सही उत्तर: क) Paraboloid of revolution
In a forced vortex the rise of surface is z = ω²r²/(2g), which describes a paraboloid of revolution.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The metacentric height GM of a floating body, with I the second moment of the waterline area about the axis of tilt, V the displaced volume and BG the distance between centres of buoyancy and gravity (G above B), is:
सही उत्तर: ख) I/V − BG
BM = I/V, and with G above B, GM = BM − BG = I/V − BG; the body is stable if GM is positive.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The SI unit of surface tension is:
सही उत्तर: ग) N/m
Surface tension is force per unit length (N/m), equivalently energy per unit area (J/m²); N·s/m² is the unit of dynamic viscosity.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Coulomb's wedge theory of earth pressure differs from Rankine's theory mainly because it:
सही उत्तर: घ) Takes into account friction between the wall and the backfill
Coulomb considers a sliding wedge with wall friction δ and inclined wall faces; Rankine assumes a smooth wall.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A 'pressure bulb' in soil mechanics is:
सही उत्तर: घ) The zone below a loaded area enclosed by a line of equal vertical stress
A pressure bulb (isobar) joins points of equal vertical stress; the zone within the 0.2q isobar is taken as significant for settlement.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In sinking well foundations for bridges, the terms 'tilt' and 'shift' refer to:
सही उत्तर: क) Deviation of the well from vertical and displacement of its position from the intended location
Tilts and shifts are errors in alignment and position that occur while sinking a well; codes limit them (e.g. tilt 1 in 80).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Wash boring as a method of soil exploration involves:
सही उत्तर: ख) Advancing a borehole by chopping and jetting the soil out of the hole with a stream of water
In wash boring, water forced through a chopping bit loosens soil which is carried up the annulus; it gives disturbed samples only.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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For obtaining good quality undisturbed soil samples, the area ratio of a sampling tube should generally not exceed about:
सही उत्तर: ग) 10%
Area ratio = (Do² − Di²)/Di² × 100; a value of 10% or less is recommended to limit disturbance in thin-walled samplers.
💬 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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