इन्जिनियरिङ सेवा सिभिल इन्जिनियर (सातौँ तह) – प्राविधिक पत्र
इन्जिनियरिङ सेवा – सिभिल इन्जिनियर (सातौँ तह)
Civil Engineer – 7th Level · Engineering Service
१,९४० प्रश्न उपलब्ध। मोड छान्नुहोस्:
प्राविधिक पत्र: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ५ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
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The Lambert conformal conic projection is particularly suitable for mapping regions that:
सही उत्तर: क) Have a large east-west extent in the middle latitudes
A cone secant along two standard parallels keeps scale error small for mid-latitude regions elongated east-west.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The 'spectral resolution' of a remote sensing sensor refers to:
सही उत्तर: घ) The number and width of the wavelength bands it records
Finer spectral resolution means more and narrower bands, allowing better discrimination of materials.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The 'temporal resolution' of a satellite remote sensing system is:
सही उत्तर: ग) How often it can image the same area (revisit interval)
Temporal resolution is the revisit period, e.g. 16 days for a single Landsat satellite.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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'Topology' in a vector GIS refers to:
सही उत्तर: ख) The spatial relationships among features, such as connectivity, adjacency and containment
Topology records how features relate, e.g. which lines connect at nodes and which polygons share boundaries.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In GIS, the Inverse Distance Weighting (IDW) method is used to:
सही उत्तर: क) Interpolate values at unsampled locations, giving nearer sample points more influence
IDW estimates a value as a weighted average of nearby samples, with weights decreasing with distance.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In carrier-phase GNSS positioning, the 'integer ambiguity' refers to:
सही उत्तर: घ) The unknown whole number of carrier wavelengths between the satellite and receiver at the start of tracking
The receiver measures only the fractional phase; the initial whole number of cycles must be resolved to obtain precise range.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In GNSS carrier-phase surveying, a 'cycle slip' is:
सही उत्तर: ग) A sudden jump by an integer number of cycles in the accumulated carrier phase, due to temporary loss of lock
When the receiver briefly loses the signal (e.g. due to obstruction), the integer cycle count jumps and must be detected and repaired.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The 'swath width' of a satellite imaging sensor is:
सही उत्तर: ख) The width of the strip of ground imaged in a single pass
Swath width is the across-track width of the ground strip covered as the satellite moves along its orbit.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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'Selective Availability', the intentional degradation of the GPS civilian signal, was switched off by the United States in:
सही उत्तर: क) 2000
Selective Availability was discontinued in May 2000, improving civilian GPS accuracy greatly.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A vertical photograph is taken with a camera of focal length 150 mm from 3000 m above mean sea level over ground at an elevation of 500 m. The photo scale for that ground is:
सही उत्तर: घ) 1 : 16,667
Scale = f / (H − h) = 0.15 / (3000 − 500) = 1/16,667.
💬 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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