Surveying Local attraction in compass surveying may exist due to incorrect levelling of the magnetic needle presence of magnetic substances near the instrument friction of the needle at the pivot loss of magnetism of the needle incorrect levelling of the magnetic needle presence of magnetic substances near the instrument friction of the needle at the pivot loss of magnetism of the needle ANSWER DOWNLOAD EXAMIANS APP
Surveying Sidereal day Is slightly shorter than an ordinary solar day Is divided into the conventional hours, minutes and seconds Is the period of time taken by the earth in making a complete rotation with reference to stars All listed here Is slightly shorter than an ordinary solar day Is divided into the conventional hours, minutes and seconds Is the period of time taken by the earth in making a complete rotation with reference to stars All listed here ANSWER DOWNLOAD EXAMIANS APP
Surveying Which of the following errors can be eliminated by taking mean of bot face observations ? error due to imperfect graduations error due to imperfect adjustment of plate levels error due to eccentricity of verniers error due to line of collimation not being perpendicular to horizontal axis error due to imperfect graduations error due to imperfect adjustment of plate levels error due to eccentricity of verniers error due to line of collimation not being perpendicular to horizontal axis ANSWER DOWNLOAD EXAMIANS APP
Surveying The scale of the photography taken from a height of 300 m, with a camera of focal length 15 cm, is 1 : 10,000 1 : 15,000 1 : 30,000 1 : 20,000 1 : 10,000 1 : 15,000 1 : 30,000 1 : 20,000 ANSWER DOWNLOAD EXAMIANS APP
Surveying If α is the observed altitude, the refraction correction in seconds, is 58 cos α 58" cot α 58 sin α 58" tan α 58 cos α 58" cot α 58 sin α 58" tan α ANSWER DOWNLOAD EXAMIANS APP
Surveying If the R.L. of a B.M. is 100.00 m, the back- sight is 1.215 m and the foresight is 1.870 m, the R.L. of the forward station is 100.655 m 101.870 m 100.345 m 99.345 m 100.655 m 101.870 m 100.345 m 99.345 m ANSWER DOWNLOAD EXAMIANS APP
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