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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Two contour lines can cross each other only in the case of:
सही उत्तर: ख) An overhanging cliff
Contours of different elevations can intersect only where the ground overhangs.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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When contour lines cross a valley, they form V-shapes with the apex pointing:
सही उत्तर: ग) Towards higher ground (uphill)
In a valley, contours form V-shapes whose apex points uphill, the opposite of a ridge.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a dumpy level, the telescope is:
सही उत्तर: घ) Rigidly fixed to the vertical spindle
The dumpy level has its telescope rigidly fixed to the levelling head, unlike tilting or Y-levels.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Parallax in a levelling telescope is eliminated by:
सही उत्तर: क) Proper focusing of the eyepiece and the objective
Parallax disappears when the image formed by the objective falls exactly on the plane of the cross hairs, achieved by focusing eyepiece and objective.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The sensitivity of a level bubble tube increases with:
सही उत्तर: ख) An increase in the radius of curvature of the tube
A larger radius of curvature means the bubble moves more for a given tilt, so the tube is more sensitive.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Reciprocal levelling is mainly used when:
सही उत्तर: ग) Levelling across a wide river or valley
Across rivers/valleys BS and FS cannot be balanced, so reciprocal observations eliminate curvature, refraction and collimation errors.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In reciprocal levelling, with the level near A the staff readings were A = 1.500 m, B = 2.300 m; with the level near B they were A = 0.900 m, B = 1.600 m. The true difference in level between A and B is:
सही उत्तर: घ) 0.750 m
True difference = mean of apparent differences = (0.800 + 0.700)/2 = 0.750 m.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The combined correction for curvature and refraction over a distance of 3 km is approximately:
सही उत्तर: क) 0.606 m (subtractive)
Combined correction = 0.0673 D² = 0.0673 × 9 ≈ 0.606 m, and it is subtractive.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The correction for curvature of the earth in metres, for a distance D in kilometres, is:
सही उत्तर: ख) 0.0785 D²
Curvature correction = D²/2R ≈ 0.0785 D² m with D in km.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Error due to imperfect adjustment of the line of collimation in levelling is eliminated by:
सही उत्तर: ग) Keeping back sight and fore sight distances equal
With equal BS and FS distances the collimation error is the same on both readings and cancels.
💬 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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