सिभिल इन्जिनियरिङ

सिभिल इन्जिनियरिङ: प्रश्न र उत्तर

सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।

सही: ० / ०

2951. The first permanent adjustment of a transit theodolite is to make:

      कThe axes of the plate levels perpendicular to the vertical axis खThe line of collimation perpendicular to the horizontal axis गThe horizontal axis perpendicular to the vertical axis घThe altitude bubble axis parallel to the line of collimation
      💬 टिप्पणी / गल्ती रिपोर्ट (०)

      छलफल / प्रश्न उत्तरमा गल्ती छ

      पठाउनुहोस्

      टिप्पणी जाँचपछि मात्र देखिन्छ।

2952. Errors in horizontal angles due to inaccurate graduation of the horizontal circle are minimised by:

      कLevelling the instrument more carefully खTaking face left readings only गReading only one vernier घMeasuring the angle several times on different parts of the circle
      💬 टिप्पणी / गल्ती रिपोर्ट (०)

      छलफल / प्रश्न उत्तरमा गल्ती छ

      पठाउनुहोस्

      टिप्पणी जाँचपछि मात्र देखिन्छ।

2953. In a vernier theodolite, error due to eccentricity of the verniers is eliminated by:

      कKeeping sights equal खMeasuring the angle once on face left only गReading the two verniers and averaging them घUsing a longer telescope
      💬 टिप्पणी / गल्ती रिपोर्ट (०)

      छलफल / प्रश्न उत्तरमा गल्ती छ

      पठाउनुहोस्

      टिप्पणी जाँचपछि मात्र देखिन्छ।

2954. In theodolite work, 'swinging the telescope right' means:

      कTurning it anticlockwise about the vertical axis खTurning it clockwise about the vertical axis गRotating it about the horizontal axis through 180° घTilting it slightly with the foot screws
      💬 टिप्पणी / गल्ती रिपोर्ट (०)

      छलफल / प्रश्न उत्तरमा गल्ती छ

      पठाउनुहोस्

      टिप्पणी जाँचपछि मात्र देखिन्छ।

2955. Two theodolite stations A and B are in line with a tower and B is 20 m farther from the tower than A. The angles of elevation of the top from A and B, at the same instrument height, are 45° and 30°. The height of the top above the instrument axis is about:

      क27.3 m ख20.0 m ग34.6 m घ11.5 m
      💬 टिप्पणी / गल्ती रिपोर्ट (०)

      छलफल / प्रश्न उत्तरमा गल्ती छ

      पठाउनुहोस्

      टिप्पणी जाँचपछि मात्र देखिन्छ।

2956. For precise (geodetic) levelling, the staff commonly used has its graduations on a strip of:

      कPlastic tape खOrdinary wood गCopper घInvar, which has a very low coefficient of thermal expansion
      💬 टिप्पणी / गल्ती रिपोर्ट (०)

      छलफल / प्रश्न उत्तरमा गल्ती छ

      पठाउनुहोस्

      टिप्पणी जाँचपछि मात्र देखिन्छ।

2957. Reciprocal levelling eliminates or reduces errors due to:

      कSettlement of the tripod खWrong reading of the staff गImperfect adjustment of the line of collimation, curvature of the earth and mean refraction घNon-verticality of the staff
      💬 टिप्पणी / गल्ती रिपोर्ट (०)

      छलफल / प्रश्न उत्तरमा गल्ती छ

      पठाउनुहोस्

      टिप्पणी जाँचपछि मात्र देखिन्छ।

2958. When plotting a longitudinal section (profile) of a road, the vertical scale is usually kept:

      कThe same as the horizontal scale खLarger than the horizontal scale, often about ten times गSmaller than the horizontal scale घUnrelated to any scale
      💬 टिप्पणी / गल्ती रिपोर्ट (०)

      छलफल / प्रश्न उत्तरमा गल्ती छ

      पठाउनुहोस्

      टिप्पणी जाँचपछि मात्र देखिन्छ।

2959. A rotating laser level is used on construction sites mainly to:

      कEstablish a horizontal (or inclined) reference plane that can be read anywhere on site खMeasure horizontal angles गFind the magnetic bearing of a line घMeasure the area of a plot
      💬 टिप्पणी / गल्ती रिपोर्ट (०)

      छलफल / प्रश्न उत्तरमा गल्ती छ

      पठाउनुहोस्

      टिप्पणी जाँचपछि मात्र देखिन्छ।

2960. The permissible closing error in a levelling circuit is usually expressed as C√K, where K is:

      कThe height of the instrument in metres खThe number of benchmarks गThe number of change points squared घThe length of the levelling route in kilometres
      💬 टिप्पणी / गल्ती रिपोर्ट (०)

      छलफल / प्रश्न उत्तरमा गल्ती छ

      पठाउनुहोस्

      टिप्पणी जाँचपछि मात्र देखिन्छ।