सिभिल इन्जिनियरिङ
सिभिल इन्जिनियरिङ
Civil Engineering · ५,१७१ प्रश्न
५,१७१ प्रश्न उपलब्ध। मोड छान्नुहोस्:
सिभिल इन्जिनियरिङ: 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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A shapefile, a widely used GIS data format, stores:
सही उत्तर: क) Vector features (points, lines or polygons) with their attributes
The Esri shapefile is a vector format made of several files (.shp, .shx, .dbf, etc.).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In GIS, 'attribute data' means:
सही उत्तर: घ) Descriptive (non-spatial) information about features, such as name, type or population
Attributes are stored in tables linked to spatial features, e.g. road class or parcel owner.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A total station measures a slope distance of 200.00 m at a zenith angle of 80°. The horizontal distance is about:
सही उत्तर: ग) 196.96 m
Horizontal distance = slope distance × sin(zenith angle) = 200 × sin 80° ≈ 196.96 m.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The 'ephemeris' broadcast by a GNSS satellite contains:
सही उत्तर: ख) Data describing the satellite's orbit, used to compute its position at any time
Broadcast ephemeris parameters let the receiver calculate where the satellite is when the signal was transmitted.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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'Static' GNSS relative positioning, in which receivers remain stationary on points for long sessions, is mainly used for:
सही उत्तर: क) High-precision control surveys and long baselines
Long simultaneous observations allow ambiguities and errors to be resolved, giving millimetre-to-centimetre accuracy for control networks.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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On a tilted aerial photograph, image displacement due to tilt is radial from the:
सही उत्तर: घ) Isocentre
Tilt displacement is radial from the isocentre, whereas relief displacement is radial from the nadir point.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Compared with the prismoidal formula, the end-area (trapezoidal) formula for earthwork volume generally:
सही उत्तर: ग) Tends to overestimate the volume, so a prismoidal correction is subtracted
For typical earthwork solids such as pyramidal frustums, the end-area method gives a larger volume than the prismoidal formula.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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With a polar planimeter of multiplying constant M = 100 cm², the initial and final readings are 2.400 and 7.200, the zero mark does not pass the index (N = 0) and the anchor is outside the figure (C = 0). The area is:
सही उत्तर: ख) 480 cm²
A = M (F − I) = 100 × (7.200 − 2.400) = 480 cm².
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The point of curvature of a road curve is at chainage 890.80 m, and pegs are to be fixed at every 20 m of through chainage. The length of the first sub-chord is:
सही उत्तर: क) 9.20 m
The next whole 20 m chainage after 890.80 is 900.00, so the first sub-chord = 900.00 − 890.80 = 9.20 m.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Taking the combined curvature and refraction correction as 0.0673 D² (D in km), the maximum distance at which a signal 10 m high can be seen from ground level (ignoring obstructions) is about:
सही उत्तर: घ) 12.2 km
D = √(h/0.0673) = √(10/0.0673) = √148.6 ≈ 12.2 km.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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