Surveying α and β are the angles subtended by a point of elevation h at their air station with respective plumb points. Photo scale and focal length of the lens being ‘S’ and ‘f’ respectively. Parallax displacement of the point due to relief, is h (tan α - tan β)/S h tan β/S h (tan α + tan β)/S h tan α/S h (tan α - tan β)/S h tan β/S h (tan α + tan β)/S h tan α/S ANSWER DOWNLOAD EXAMIANS APP
Surveying The resection by two point problem as compared to three point problem None of these takes less time gives more accurate problem requires more labour None of these takes less time gives more accurate problem requires more labour ANSWER DOWNLOAD EXAMIANS APP
Surveying International Date Line is located along Equator 180° longitude Greenwich meridian Standard meridian Equator 180° longitude Greenwich meridian Standard meridian ANSWER DOWNLOAD EXAMIANS APP
Surveying Local attraction in compass surveying may exist due to 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 incorrect levelling of the magnetic needle ANSWER DOWNLOAD EXAMIANS APP
Surveying The following sights are taken on a “turning point” foresight only foresight only foresight and intermediate sight foresight and backsight foresight only foresight only foresight and intermediate sight foresight and backsight ANSWER DOWNLOAD EXAMIANS APP
Surveying Subtense bar is an instrument used for measurement of angles measurement of horizontal distances in undulated areas levelling measurement of horizontal distances in plane areas measurement of angles measurement of horizontal distances in undulated areas levelling measurement of horizontal distances in plane areas ANSWER DOWNLOAD EXAMIANS APP
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