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 α + tan β)/S h tan α/S h tan β/S h (tan α - tan β)/S h (tan α + tan β)/S h tan α/S h tan β/S ANSWER DOWNLOAD EXAMIANS APP
Surveying The difference between a level line and a horizontal line is that horizontal line is normal to plumb line while level line may not be normal to the plumb line level line is normal to plumb line while horizontal line may not be normal to plumb line at the tangent point to level line level line is a curved line while hori-zontal line is a straight line both are same horizontal line is normal to plumb line while level line may not be normal to the plumb line level line is normal to plumb line while horizontal line may not be normal to plumb line at the tangent point to level line level line is a curved line while hori-zontal line is a straight line both are same ANSWER DOWNLOAD EXAMIANS APP
Surveying Transit rule of adjusting the consecutive coordinates of a traverse is used where linear measurements are more accurate than angular measurements linear and angular measurements of the traverse are of equal accuracy All of these angular measurements are more accurate than linear measurements linear measurements are more accurate than angular measurements linear and angular measurements of the traverse are of equal accuracy All of these angular measurements are more accurate than linear measurements ANSWER DOWNLOAD EXAMIANS APP
Surveying If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference toi) altitude bubble on index frameii) altitude bubble on index frame if it is to be used as a leveliii) altitude bubble on telescopeiv) altitude bubble on telescope if it is to be used as a levelThe correct answer is both (i) and (iv) only (iii) only (i) both (ii) and (iii) both (i) and (iv) only (iii) only (i) both (ii) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Surveying The correction applied to the measured base of length ‘L’ is Tension = (P - Ps)L/AE Slope = (h²/2L) + (h⁴/8L³) where h is height difference of end supports All of these Sag = L³w²/24P² where w is the weight of tape/m Tension = (P - Ps)L/AE Slope = (h²/2L) + (h⁴/8L³) where h is height difference of end supports All of these Sag = L³w²/24P² where w is the weight of tape/m ANSWER DOWNLOAD EXAMIANS APP
Surveying The most convenient co-ordinate system for specifying the relative positions of heavenly bodies on the celestial sphere, is Declination and hour angle system Altitude and azimuth system Declination and altitude system Declination and right ascension system Declination and hour angle system Altitude and azimuth system Declination and altitude system Declination and right ascension system ANSWER DOWNLOAD EXAMIANS APP
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