Surveying ‘H’ is the flying height above mean ground level and ‘f’ is the principal distance of a vertical photograph. The mean scale of the photographs is H/f H + f f/H H. f H/f H + f f/H H. f ANSWER DOWNLOAD EXAMIANS APP
Surveying The scale of a vertical photograph of focal length ‘f’ taken from height of ‘H’ metres above M.S.L., at a point of reduced level ‘h’, is f/(H - h) f/H (H - h)/f f/(H + h) f/(H - h) f/H (H - h)/f f/(H + h) ANSWER DOWNLOAD EXAMIANS APP
Surveying Local attraction in compass surveying may exist due to presence of magnetic substances near the instrument loss of magnetism of the needle friction of the needle at the pivot incorrect levelling of the magnetic needle presence of magnetic substances near the instrument loss of magnetism of the needle friction of the needle at the pivot incorrect levelling of the magnetic needle ANSWER DOWNLOAD EXAMIANS APP
Surveying The method of surveying by triangulation was first introduced by the Dutchman Snell in 1615 1630 1600 1650 1615 1630 1600 1650 ANSWER DOWNLOAD EXAMIANS APP
Surveying The size of a plane table is 750 mm × 900 mm 300 mm × 450 mm 600 mm × 750 mm 450 mm × 600 mm 750 mm × 900 mm 300 mm × 450 mm 600 mm × 750 mm 450 mm × 600 mm ANSWER DOWNLOAD EXAMIANS APP
Surveying The altitudes of a circumpolar star at culminations are 70° and 10°, both culminations being north of zenith. The declination of the star, is 60° 50° 70° 80° 60° 50° 70° 80° ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS