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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The prism square, used for setting out right angles, differs from the optical square in that it:
सही उत्तर: क) Uses a pentagonal prism, so the 90° angle is fixed and needs no adjustment
The angle between the faces of the prism is fixed during manufacture, so it gives a right angle without the mirror adjustment needed in an optical square.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Error due to bad ranging in chaining causes the measured length of a line to be:
सही उत्तर: घ) Greater than the true length
If intermediate points are off the straight line, the chain follows a zig-zag path, so the recorded length is always too long.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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An error caused by using a tape that is consistently too short is an example of a:
सही उत्तर: ग) Systematic (cumulative) error
A wrong tape length affects every measurement in the same direction, so it is systematic and can be corrected.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In GIS, a 'buffer' operation creates:
सही उत्तर: ग) A zone of specified distance around a point, line or polygon feature
Buffering generates polygons at a set distance around features, e.g., 50 m on each side of a river.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A triangular plot has sides of 13 m, 14 m and 15 m. Its area by Heron's formula is:
सही उत्तर: क) 84 m²
s = 21; area = √(21 × 8 × 7 × 6) = √7056 = 84 m².
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In hydrographic surveying, soundings are reduced to a reference level called the:
सही उत्तर: ख) Chart datum
Chart datum is a low-water level below which the tide seldom falls, so charted depths are the minimum likely depths.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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When setting out a curve by pegs at regular chainages, the first sub-chord is used so that:
सही उत्तर: घ) Pegs fall at full (whole) chainage values along the curve
Since the tangent point usually falls at an odd chainage, a short first sub-chord brings the next peg to a round chainage, after which normal chords are used.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The point of curvature of a circular curve (R = 200 m, Δ = 60°) is at chainage 890.80 m. The chainage of the point of tangency is about:
सही उत्तर: ग) 1100.24 m
Curve length = πRΔ/180 = π × 200 × 60/180 = 209.44 m; chainage of PT = 890.80 + 209.44 = 1100.24 m.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A metallic tape used in surveying is made of:
सही उत्तर: ख) Linen or synthetic fabric with fine brass or copper wires woven in
Metallic tapes are woven linen tapes reinforced with fine wires to reduce stretching; they are used for offsets, not precise work.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The main advantage of a graphical (bar) scale drawn on a map over a statement of scale is that:
सही उत्तर: ख) It remains correct even if the map shrinks or is enlarged/reduced in copying
Since the bar scale shrinks or enlarges with the map, distances measured with it remain correct.
💬 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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