सर्भेक्षण – Surveying MCQ

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

31. On a tilted aerial photograph, the 'nadir point' (plumb point) is:

    कThe centre of the photograph defined by the fiducial marks खThe point where the bisector of the tilt angle meets the photograph गThe point where a vertical line through the camera's perspective centre meets the photograph घThe brightest point on the photograph
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

32. Two sides of a triangular plot measure 40 m and 30 m, and the included angle is 30°. The area of the plot is:

    क600 m² ख300 m² ग520 m² घ150 m²
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

33. Among triangulation figures, a simple chain of triangles is:

    कThe quickest and most economical, but the least accurate as it has few checks खThe most accurate figure गUsed only for base nets घUnsuitable for narrow strips such as valleys
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

34. Electronic theodolites and total stations read their horizontal and vertical circles by means of:

    कVerniers खMicrometer microscopes गMagnetic needles घRotary encoders that convert the circle position into electronic signals
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

35. A parallel plate micrometer is fitted to precise levels in order to:

    कFocus the telescope खLevel the instrument automatically गRead the staff to a small fraction of its smallest graduation, such as 0.1 mm घMeasure horizontal angles
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

36. During levelling, the tripod sinks slightly after the back sight is taken but before the fore sight is read. As a result, the reduced level computed for the fore sight point will be:

    कToo low खToo high गCorrect घToo high or too low depending on the BS value
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

37. A tape 30 m long is held with one end 0.6 m off the line being measured. The correction for this misalignment is:

    क−0.006 m ख+0.006 m ग−0.012 m घ−0.060 m
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

38. In drone (UAV) photogrammetry, the 'ground sample distance' (GSD) is:

    कThe distance flown between photographs खThe flying height above ground गThe overlap between photographs घThe ground distance represented by one pixel of the image
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

39. The output of a LiDAR survey, consisting of millions of individually located 3D points, is called a:

    कRaster mosaic खContour sheet गPoint cloud घStereo pair
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

40. In chain surveying, the base line should preferably be laid out:

    कAlong the boundary of the area खThrough the middle of the area, along level ground, so that the framework can be built on it गAcross the steepest slope घOutside the area
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।