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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The permissible angular misclosure of a closed traverse is commonly expressed in the form K√N, where N is:
सही उत्तर: ग) The number of angles (stations) measured
Since random angular errors accumulate with the square root of the number of angles, the allowable misclosure is K√N.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The error in a measured horizontal angle caused by inaccurate centring of the theodolite over the station is greatest when:
सही उत्तर: ख) The sights are short
A given centring error subtends a larger angle at short distances, so short sights need very careful centring.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In precise levelling, lines of sight are kept well above the ground surface (e.g. not below about 0.5 m on the staff) mainly to reduce errors due to:
सही उत्तर: क) Refraction, which is irregular close to the heated ground
Air near the ground has strong temperature gradients, making refraction large and variable.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In an EDM instrument, the zero (additive) error and the scale error differ in that:
सही उत्तर: घ) The zero error is constant for all distances, whereas the scale error is proportional to the distance measured
A constant offset affects every measurement equally, while a frequency (scale) error causes an error in parts per million of the distance.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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An assembly of overlapping aerial photographs fitted together to form a continuous picture of an area is called a:
सही उत्तर: ग) Mosaic
A mosaic joins individual photographs into a single continuous image of the area.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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On a tilted aerial photograph, the point where the bisector of the angle of tilt meets the photograph is called the:
सही उत्तर: ख) Isocentre
The isocentre lies on the principal line between the principal point and the nadir; tilt displacements radiate from it.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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If the smallest length that can be plotted accurately on paper is 0.25 mm, the smallest ground distance that can be shown on a map of scale 1:1000 is:
सही उत्तर: क) 0.25 m
0.25 mm × 1000 = 250 mm = 0.25 m on the ground; this decides the precision needed in field measurements.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A plan differs from a map in that a plan is:
सही उत्तर: घ) Drawn to a relatively large scale, covering a small area
Plans show small areas (e.g. buildings) at large scales; maps show larger areas at smaller scales.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A perambulator (measuring wheel) is used for:
सही उत्तर: ग) Rough measurement of distances, such as along roads, by counting wheel revolutions
The distance is obtained from the number of revolutions of a wheel of known circumference; it is suitable only for approximate work.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A pantograph is an instrument used to:
सही उत्तर: ख) Enlarge or reduce a map or plan to a different scale
A pantograph uses a linkage of hinged bars to copy a drawing at a larger or smaller scale.
💬 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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