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

191. 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।

192. 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।

193. 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।

194. 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।

195. The height of instrument (collimation) method of reducing levels is preferred over the rise and fall method when:

     कThere are no intermediate sights at all खVery high precision checks on every reading are required गThere are many intermediate sights, as in profile levelling and setting out घLevelling is done across a river
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

196. A horizontal line at a point is:

     कA curved line parallel to mean sea level खA straight line tangent to the level line at that point गA line parallel to the plumb line घA line joining two points of equal reduced level on the ground
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

197. Sudden and abnormal changes in magnetic declination caused by magnetic storms are called:

     कIrregular variations खSecular variations गDiurnal variations घAnnual variations
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

198. A base line 1000 m long is measured at a mean elevation of 500 m above mean sea level. Taking the earth's radius as 6370 km, the correction to reduce it to mean sea level is about:

     क−7.85 m ख+0.0785 m ग−0.785 m घ−0.0785 m
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

199. The normal tension Pn at which pull and sag corrections cancel is given by Pn = 0.204 W √(AE) / √(Pn − P0). In this formula, W is the:

     कWeight per metre of the tape खWidth of the tape गTotal weight of the tape between supports घStandard pull
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

200. Chain surveying is most suitable for:

     कLarge hilly areas with many obstacles खSmall, fairly level, open areas with simple details गThickly wooded country घBuilt-up city centres with many buildings
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।