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/S 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 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 level The correct answer is both (ii) and (iii) only (iii) both (i) and (iv) only (i) both (ii) and (iii) only (iii) both (i) and (iv) only (i) ANSWER DOWNLOAD EXAMIANS APP
Surveying Circumpolar stars Rotate round the celestial pole Remain always above the horizon Rotate round the North Pole Are seldom seen near the pole star Rotate round the celestial pole Remain always above the horizon Rotate round the North Pole Are seldom seen near the pole star ANSWER DOWNLOAD EXAMIANS APP
Surveying In an internal focussing type of telescope, the lens provided is convex concave plano-convex plano-concave convex concave plano-convex plano-concave ANSWER DOWNLOAD EXAMIANS APP
Surveying A star in northern sphere is said to transit When its azimuth is 180° When it is in south All listed here When its altitude is maximum When its azimuth is 180° When it is in south All listed here When its altitude is maximum ANSWER DOWNLOAD EXAMIANS APP
Surveying The rate of change of parallax dp/dh with respect to change in h, may be expressed as fB/(H - h)² fB/(H + h)² fB/(H + h) fB/(H - h) fB/(H - h)² fB/(H + h)² fB/(H + h) fB/(H - h) ANSWER DOWNLOAD EXAMIANS APP
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