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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A 100 m steel tape (α = 12 × 10⁻⁶ /°C) is used at a temperature 20°C above its standard temperature. The temperature correction per tape length is:
सही उत्तर: घ) +0.024 m
Ct = αL(T − T₀) = 12×10⁻⁶ × 100 × 20 = +0.024 m (tape expands, so correction is additive).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The correction for sag in taping is always:
सही उत्तर: क) Negative (subtractive)
A sagging tape reads more than the true horizontal distance, so sag correction is always subtractive.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A 20 m chain was found to be 20.10 m long. A distance measured with it was recorded as 500 m. The true distance is:
सही उत्तर: ख) 502.5 m
True length = (L'/L) × measured = (20.10/20) × 500 = 502.5 m.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A line measured along a uniform slope is 30 m long and the difference in height between its ends is 1.5 m. The slope correction is approximately:
सही उत्तर: ग) 0.0375 m
Slope correction = h²/2L = 1.5²/(2×30) = 0.0375 m (subtractive).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In an optical square, the angle between the two mirrors is:
सही उत्तर: घ) 45°
Mirrors inclined at 45° deviate the line of sight by twice that angle, i.e. 90°.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The instrument commonly used to set out right angles (perpendicular offsets) in chain surveying is:
सही उत्तर: क) Optical square
The optical square (or cross staff) is used to set out right angles to the chain line.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Entries in a chain survey field book are recorded:
सही उत्तर: ख) From the bottom of the page upwards
Chain survey field book entries start at the bottom so the view matches the direction of travel.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A tie line (check line) in chain surveying is mainly used to:
सही उत्तर: ग) Check the accuracy of the framework
Check/tie lines are measured to verify the accuracy of the triangulated framework.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A 20 m metric chain is divided into how many links?
सही उत्तर: घ) 100
A 20 m metric chain has 100 links, each 0.2 m long.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The length of a Gunter's chain is:
सही उत्तर: क) 66 ft
A Gunter's chain is 66 ft long and consists of 100 links.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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