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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Vertical photographs of format 23 cm × 23 cm are taken at a scale of 1:10,000 with 60% forward overlap. The air base (ground distance between successive exposures) is:
सही उत्तर: ग) 0.92 km
Ground coverage = 0.23 × 10,000 = 2.3 km; air base = (1 − 0.6) × 2.3 = 0.92 km.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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For a 20 m length of road embankment, the two end cross-sections have areas of 20 m² and 44 m², and the mid-section has an area of 30 m². The volume by the prismoidal formula is about:
सही उत्तर: ख) 613 m³
V = L/6 (A1 + 4Am + A2) = 20/6 × (20 + 120 + 44) = 3.333 × 184 ≈ 613 m³.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A road curve of radius 400 m is designed for a speed of 20 m/s. Ignoring friction, the superelevation e = v²/(gR) required is about:
सही उत्तर: क) 0.10 (about 1 in 10)
e = 20² / (9.81 × 400) = 400 / 3924 ≈ 0.102, i.e. about 1 in 10.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Jäderin's apparatus was used in triangulation for:
सही उत्तर: घ) Measuring base lines with suspended wires or tapes in catenary
Jäderin's method measures base lines with long invar wires or tapes suspended under tension between tripods.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a closed traverse, the length and bearing of one line could not be measured. The sums of latitudes and departures of the other lines are +30.00 m and −40.00 m. The missing line has:
सही उत्तर: ग) Length 50.00 m, bearing S 53°08' E
The missing line must close the traverse: latitude −30, departure +40, so length = √(30² + 40²) = 50 m and bearing = S tan⁻¹(40/30) E = S 53°08' E.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In levelling, the staffman is often asked to rock the staff slowly towards and away from the instrument. The reading that should be booked is the:
सही उत्तर: ख) Minimum reading observed
When the staff is exactly vertical the reading is least, so the minimum reading while rocking corresponds to a vertical staff.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a 'double line' chain survey field book, the chainages along the survey line are written:
सही उत्तर: क) Between two parallel lines drawn down the middle of the page, which represent the chain line
In the double-line book, the column between two parallel lines represents the chain line and holds the chainages, with offsets recorded on either side.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Wall putty, applied on plastered walls before painting, is mainly used to:
सही उत्तर: घ) Fill minor surface irregularities and pores to give a smooth base for paint
Wall putty (commonly white-cement based) is a thin filler coat that levels small defects so that the paint film is smooth and uniform.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A 150 mm concrete cube weighs 8.1 kg. The density of the concrete is:
सही उत्तर: क) 2400 kg/m³
Volume = 0.15³ = 0.003375 m³; density = 8.1 ÷ 0.003375 = 2400 kg/m³.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a compaction factor test, the weight of partially compacted concrete is 22.0 kg and the weight of the same volume fully compacted is 25.0 kg. The compaction factor is:
सही उत्तर: घ) 0.88
Compaction factor = 22.0 ÷ 25.0 = 0.88.
💬 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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