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 f/H H. f H/f H + f f/H H. f H/f ANSWER DOWNLOAD EXAMIANS APP
Surveying If α, H, A and δ be the altitude, hour angle, azimuth and declination of a circumpolar star at its elongation, in latitude λ, the following relation holds good sin A = cos δ/cos λ sin α = sin λ/sin δ All listed here cos H = tan λ/tan δ sin A = cos δ/cos λ sin α = sin λ/sin δ All listed here cos H = tan λ/tan δ ANSWER DOWNLOAD EXAMIANS APP
Surveying The hour angle of the heavenly body for Greenwich meridian equals the hour angle of the body for any other meridian + longitude: Mean sun True sun All listed here Vernal equinox Mean sun True sun All listed here Vernal equinox ANSWER DOWNLOAD EXAMIANS APP
Surveying Local attraction in compass surveying may exist due to loss of magnetism of the needle friction of the needle at the pivot presence of magnetic substances near the instrument incorrect levelling of the magnetic needle loss of magnetism of the needle friction of the needle at the pivot presence of magnetic substances near the instrument incorrect levelling of the magnetic needle ANSWER DOWNLOAD EXAMIANS APP
Surveying A plate parallel is the line on the plane of the negative Perpendicular to the principal line Parallel to the principal line None of these Along the bisector of the angle between the principal line and a perpendicular line through principal plane Perpendicular to the principal line Parallel to the principal line None of these Along the bisector of the angle between the principal line and a perpendicular line through principal plane ANSWER DOWNLOAD EXAMIANS APP
Surveying If ‘δ’ is the declination of the star and ‘φ’ is the latitude of the observer, then the azimuth of the star at elongation is given by cos z = sec φ . cos δ tan z = sec φ . cos δ sin z = sec φ . cos δ None of these cos z = sec φ . cos δ tan z = sec φ . cos δ sin z = sec φ . cos δ None of these ANSWER DOWNLOAD EXAMIANS APP
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