Civil Engineering :: Advanced Surveying
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If 16 flight lines are run perpendicular to an area 30 km wide, their spacings on a photographical map on scale 1 : 50,000 , will be
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The scale of a tilted photograph of focal length f taken from an altitude H, along the plate parallel through principal point is
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The position of the sun when its north declination is maximum is known as
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Pick up the correct statement from the following :
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For mapping any country
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The foot of the perpendicular on the picture plane through the optical centre of the camera lens, is known as
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The point where a vertical line through the optical centre of the camera lens intersects the ground, is known as
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Circumpolar stars
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By applying clockwise swing to right projector, maximum y-parallax is introduced in the model at
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A.
the vertical plane containing the zenith, the station of observation and the celestial pole is the observer's meridian plane.
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B.
the angle between the direction of star in vertical plane and the direction of the star in horizontal plane is called the altitude of the star.
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C.
the complement of the altitude of star is called the zenith distance of the star.
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D.
all the above.
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A.
geodetic triangulation of greatest possible sides and accuracy is carried out
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B.
primary triangles are broken down into secondary triangles of somewhat lesser accuracy
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C.
secondary triangles are further broken into third and fourth order triangles, the points of which are used for detail surveys
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D.
all the above.
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