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 'three-wire' levelling, readings are taken on the upper, middle and lower cross hairs mainly to:
सही उत्तर: ग) Check the middle-hair reading (mean of the stadia readings) and obtain the sight distance
The mean of the stadia hair readings should agree with the middle reading, and the stadia intercept gives the sight length for balancing.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The 'missing line measurement' (MLM) program of a total station gives:
सही उत्तर: ख) The horizontal and slope distance and height difference between two remote target points, without occupying either
MLM computes the distance and elevation difference between two observed points from the instrument's measurements to each.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The 'remote elevation measurement' (REM) program of a total station is used to find:
सही उत्तर: क) The height of an inaccessible point, such as a cable or bridge soffit, above a prism placed directly below it
REM measures to a prism below the target, then uses vertical angles to the target to compute its height.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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With a total station, the 'stake out' (setting out) function is used to:
सही उत्तर: घ) Guide the placing of points on the ground at given design coordinates
The instrument computes and displays the distance and angle differences between the prism position and the design point until they match.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a surveying telescope, the cross hairs are carried by the:
सही उत्तर: ग) Diaphragm
The diaphragm (reticule), held inside the telescope tube, carries the cross hairs and stadia hairs.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Ordinary levelling staves are commonly graduated so that the smallest division is:
सही उत्तर: ख) 5 mm
Common folding and telescopic staves show 5 mm divisions, and readings are estimated to the nearest millimetre.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The angle between grid north and true north at a point on a map projection is called:
सही उत्तर: क) Grid convergence (convergence of meridians)
Grid north follows the projection's grid lines, while true north follows the meridian; the angle between them is the grid convergence.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Neap tides, which have the smallest range between high and low water, occur:
सही उत्तर: घ) Near the first and last quarters of the moon
At the quarter moons the sun and moon pull at right angles, partly cancelling and giving the least tidal range.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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An echo sounder records a time of 0.04 s between sending a sound pulse and receiving its echo. Taking the speed of sound in water as 1500 m/s, the depth is:
सही उत्तर: ग) 30 m
Depth = v × t / 2 = 1500 × 0.04 / 2 = 30 m, because the pulse travels down and back.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Three measurements of a length are 10 m, 12 m and 14 m. Using (n − 1) in the denominator, the standard deviation of a single measurement is:
सही उत्तर: ख) 2 m
Mean = 12; Σv² = 4 + 0 + 4 = 8; σ = √(8/2) = 2 m.
💬 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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