सर्भेक्षण – Surveying MCQ
सर्भेक्षण – सिभिल इन्जिनियरिङ
Surveying · Civil Engineering · १,५६५ प्रश्न
१,५६५ प्रश्न उपलब्ध। मोड छान्नुहोस्:
सर्भेक्षण: 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 setting out a simple circular curve by Rankine's method, the total deflection angle from the back tangent to the point of tangency equals:
सही उत्तर: क) Half the deflection angle of the curve (Δ/2)
The tangential angle to any point is half the central angle, so for the end of the curve it is Δ/2.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A vertical curve provided where an ascending gradient meets a descending gradient is called a:
सही उत्तर: घ) Summit curve
A summit (crest) curve is convex upwards; a valley (sag) curve is formed where a falling grade meets a rising grade.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The length of a transition curve is often found from L = v³/(C R). For v = 20 m/s, C = 0.5 m/s³ and R = 400 m, the length is:
सही उत्तर: ग) 40 m
L = 20³/(0.5 × 400) = 8000/200 = 40 m, where C is the rate of change of radial acceleration.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In setting out a circular curve by offsets from chords produced, with full chords of 20 m and a radius of 200 m, the offset for each full chord after the first is:
सही उत्तर: ख) 2.0 m
For full chords, the offset = c²/R = 20²/200 = 2.0 m (the first chord offset is c²/2R).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a mass haul diagram, a horizontal 'balancing line' cutting the curve at two points indicates that between those points:
सही उत्तर: क) The volumes of cut and fill are equal
Between the two intersections the ordinates are equal, so excavation balances embankment within that length.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The trapezoidal rule for computing areas assumes that the boundary between successive ordinates is:
सही उत्तर: घ) A straight line
Trapezoidal rule assumes straight boundaries between ordinates; Simpson's rule assumes parabolic arcs.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The areas enclosed by the 100 m, 102 m and 104 m contours of a hill are 900 m², 400 m² and 100 m² respectively. By the prismoidal (Simpson's) formula, the volume between the 100 m and 104 m contours is about:
सही उत्तर: ग) 1733 m³
V = (h/3)(A1 + 4A2 + A3) = (2/3)(900 + 1600 + 100) = (2/3)(2600) ≈ 1733 m³.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A contour map is used in water resources projects to delineate the:
सही उत्तर: ख) Catchment area of a river or reservoir
The catchment boundary follows the ridge lines identified from the contours.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A ridge line, joining the highest points of the ground and dividing the flow of rainwater to either side, is also called a:
सही उत्तर: क) Watershed line
The ridge line separates drainage, so it is called the watershed; the valley line is called the thalweg.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Where contour lines cross a ridge, they form V or U shapes with the apex pointing:
सही उत्तर: घ) Towards lower ground (downhill)
On a ridge the contours bend outward towards lower ground; in a valley they point uphill.
💬 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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