इन्जिनियरिङ सेवा असिस्टेन्ट सब-इन्जिनियर (चौथो तह) – प्राविधिक पत्र
इन्जिनियरिङ सेवा – असिस्टेन्ट सब-इन्जिनियर (चौथो तह)
Assistant Sub-Engineer – 4th Level · Engineering Service
१,५०३ 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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A vertical photograph is taken with a 150 mm focal length camera from 3000 m above flat ground. The photo scale is:
सही उत्तर: क) 1 : 20,000
Scale = f/H = 0.15/3000 = 1/20,000.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The scale of a vertical aerial photograph taken with camera focal length f from a flying height H above flat ground is:
सही उत्तर: क) f/H
Photo scale = focal length / flying height above ground, e.g. 150 mm / 1500 m = 1/10,000.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In triangulation, the only line whose length is measured directly with high precision (other lengths being computed) is the:
सही उत्तर: ख) Base line
The base line is measured very accurately; all other sides are computed from the base and the measured angles.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The vertical distance between two consecutive contours is called the:
सही उत्तर: क) Contour interval
Contour interval is the constant vertical spacing between successive contours on a map.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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An imaginary line on the ground joining points of equal elevation is called a:
सही उत्तर: ग) Contour line
A contour is the line of intersection of a level surface with the ground, joining points of equal RL.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The RL of point A is 250.500 m. The staff readings at A and B are 1.235 m and 3.785 m respectively from the same set-up. The RL of B is:
सही उत्तर: क) 247.950 m
Fall = 3.785 − 1.235 = 2.550 m; RL of B = 250.500 − 2.550 = 247.950 m.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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If the staff is held tilted forward or backward rather than vertical, the reading obtained will be:
सही उत्तर: घ) Too large
A tilted staff always gives a larger reading than the true vertical reading, so the staff is rocked and the minimum reading taken.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Triangulation is generally preferred over traversing for:
सही उत्तर: घ) Large areas in hilly or undulating terrain
In hilly country, measuring angles from widely spaced stations is easier than chaining long lines, so triangulation suits large rugged areas.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The temporary adjustments of a level carried out at every set-up are:
सही उत्तर: ग) Setting up, levelling up and elimination of parallax
Temporary adjustments—setting up, levelling and removing parallax—are done at each station; permanent adjustments correct instrument errors.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The plumbing fork in plane tabling is used for:
सही उत्तर: ग) Centring the table point over the ground station
The plumbing fork with plumb bob transfers the ground station to the plotted point on the sheet (centring).
💬 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।
नमस्ते! पाठ्यक्रम, सामान्य ज्ञान, भाषा परीक्षा वा कुनै प्रश्नको उत्तर बुझ्न सोध्नुहोस्।
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